top 10 case study psychology

15 Famous Experiments and Case Studies in Psychology

Chris Drew (PhD)

Dr. Chris Drew is the founder of the Helpful Professor. He holds a PhD in education and has published over 20 articles in scholarly journals. He is the former editor of the Journal of Learning Development in Higher Education. [Image Descriptor: Photo of Chris]

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Psychology has seen thousands upon thousands of research studies over the years. Most of these studies have helped shape our current understanding of human thoughts, behavior, and feelings.

The psychology case studies in this list are considered classic examples of psychological case studies and experiments, which are still being taught in introductory psychology courses up to this day.

Some studies, however, were downright shocking and controversial that you’d probably wonder why such studies were conducted back in the day. Imagine participating in an experiment for a small reward or extra class credit, only to be left scarred for life. These kinds of studies, however, paved the way for a more ethical approach to studying psychology and implementation of research standards such as the use of debriefing in psychology research .

Case Study vs. Experiment

Before we dive into the list of the most famous studies in psychology, let us first review the difference between case studies and experiments.

It is an in-depth study and analysis of an individual, group, community, or phenomenon. The results of a case study cannot be applied to the whole population, but they can provide insights for further studies.
It often uses qualitative research methods such as observations, surveys, and interviews.
It is often conducted in real-life settings rather than in controlled environments.
An experiment is a type of study done on a sample or group of random participants, the results of which can be generalized to the whole population.
It often uses quantitative research methods that rely on numbers and statistics.
It is conducted in controlled environments, wherein some things or situations are manipulated.

See Also: Experimental vs Observational Studies

Famous Experiments in Psychology

1. the marshmallow experiment.

Psychologist Walter Mischel conducted the marshmallow experiment at Stanford University in the 1960s to early 1970s. It was a simple test that aimed to define the connection between delayed gratification and success in life.

The instructions were fairly straightforward: children ages 4-6 were presented a piece of marshmallow on a table and they were told that they would receive a second piece if they could wait for 15 minutes without eating the first marshmallow.

About one-third of the 600 participants succeeded in delaying gratification to receive the second marshmallow. Mischel and his team followed up on these participants in the 1990s, learning that those who had the willpower to wait for a larger reward experienced more success in life in terms of SAT scores and other metrics.

This case study also supported self-control theory , a theory in criminology that holds that people with greater self-control are less likely to end up in trouble with the law!

The classic marshmallow experiment, however, was debunked in a 2018 replication study done by Tyler Watts and colleagues.

This more recent experiment had a larger group of participants (900) and a better representation of the general population when it comes to race and ethnicity. In this study, the researchers found out that the ability to wait for a second marshmallow does not depend on willpower alone but more so on the economic background and social status of the participants.

2. The Bystander Effect

In 1694, Kitty Genovese was murdered in the neighborhood of Kew Gardens, New York. It was told that there were up to 38 witnesses and onlookers in the vicinity of the crime scene, but nobody did anything to stop the murder or call for help.

Such tragedy was the catalyst that inspired social psychologists Bibb Latane and John Darley to formulate the phenomenon called bystander effect or bystander apathy .

Subsequent investigations showed that this story was exaggerated and inaccurate, as there were actually only about a dozen witnesses, at least two of whom called the police. But the case of Kitty Genovese led to various studies that aim to shed light on the bystander phenomenon.

Latane and Darley tested bystander intervention in an experimental study . Participants were asked to answer a questionnaire inside a room, and they would either be alone or with two other participants (who were actually actors or confederates in the study). Smoke would then come out from under the door. The reaction time of participants was tested — how long would it take them to report the smoke to the authorities or the experimenters?

The results showed that participants who were alone in the room reported the smoke faster than participants who were with two passive others. The study suggests that the more onlookers are present in an emergency situation, the less likely someone would step up to help, a social phenomenon now popularly called the bystander effect.

3. Asch Conformity Study

Have you ever made a decision against your better judgment just to fit in with your friends or family? The Asch Conformity Studies will help you understand this kind of situation better.

In this experiment, a group of participants were shown three numbered lines of different lengths and asked to identify the longest of them all. However, only one true participant was present in every group and the rest were actors, most of whom told the wrong answer.

Results showed that the participants went for the wrong answer, even though they knew which line was the longest one in the first place. When the participants were asked why they identified the wrong one, they said that they didn’t want to be branded as strange or peculiar.

This study goes to show that there are situations in life when people prefer fitting in than being right. It also tells that there is power in numbers — a group’s decision can overwhelm a person and make them doubt their judgment.

4. The Bobo Doll Experiment

The Bobo Doll Experiment was conducted by Dr. Albert Bandura, the proponent of social learning theory .

Back in the 1960s, the Nature vs. Nurture debate was a popular topic among psychologists. Bandura contributed to this discussion by proposing that human behavior is mostly influenced by environmental rather than genetic factors.

In the Bobo Doll Experiment, children were divided into three groups: one group was shown a video in which an adult acted aggressively toward the Bobo Doll, the second group was shown a video in which an adult play with the Bobo Doll, and the third group served as the control group where no video was shown.

The children were then led to a room with different kinds of toys, including the Bobo Doll they’ve seen in the video. Results showed that children tend to imitate the adults in the video. Those who were presented the aggressive model acted aggressively toward the Bobo Doll while those who were presented the passive model showed less aggression.

While the Bobo Doll Experiment can no longer be replicated because of ethical concerns, it has laid out the foundations of social learning theory and helped us understand the degree of influence adult behavior has on children.

5. Blue Eye / Brown Eye Experiment

Following the assassination of Martin Luther King Jr. in 1968, third-grade teacher Jane Elliott conducted an experiment in her class. Although not a formal experiment in controlled settings, A Class Divided is a good example of a social experiment to help children understand the concept of racism and discrimination.

The class was divided into two groups: blue-eyed children and brown-eyed children. For one day, Elliott gave preferential treatment to her blue-eyed students, giving them more attention and pampering them with rewards. The next day, it was the brown-eyed students’ turn to receive extra favors and privileges.

As a result, whichever group of students was given preferential treatment performed exceptionally well in class, had higher quiz scores, and recited more frequently; students who were discriminated against felt humiliated, answered poorly in tests, and became uncertain with their answers in class.

This study is now widely taught in sociocultural psychology classes.

6. Stanford Prison Experiment

One of the most controversial and widely-cited studies in psychology is the Stanford Prison Experiment , conducted by Philip Zimbardo at the basement of the Stanford psychology building in 1971. The hypothesis was that abusive behavior in prisons is influenced by the personality traits of the prisoners and prison guards.

The participants in the experiment were college students who were randomly assigned as either a prisoner or a prison guard. The prison guards were then told to run the simulated prison for two weeks. However, the experiment had to be stopped in just 6 days.

The prison guards abused their authority and harassed the prisoners through verbal and physical means. The prisoners, on the other hand, showed submissive behavior. Zimbardo decided to stop the experiment because the prisoners were showing signs of emotional and physical breakdown.

Although the experiment wasn’t completed, the results strongly showed that people can easily get into a social role when others expect them to, especially when it’s highly stereotyped .

7. The Halo Effect

Have you ever wondered why toothpastes and other dental products are endorsed in advertisements by celebrities more often than dentists? The Halo Effect is one of the reasons!

The Halo Effect shows how one favorable attribute of a person can gain them positive perceptions in other attributes. In the case of product advertisements, attractive celebrities are also perceived as intelligent and knowledgeable of a certain subject matter even though they’re not technically experts.

The Halo Effect originated in a classic study done by Edward Thorndike in the early 1900s. He asked military commanding officers to rate their subordinates based on different qualities, such as physical appearance, leadership, dependability, and intelligence.

The results showed that high ratings of a particular quality influences the ratings of other qualities, producing a halo effect of overall high ratings. The opposite also applied, which means that a negative rating in one quality also correlated to negative ratings in other qualities.

Experiments on the Halo Effect came in various formats as well, supporting Thorndike’s original theory. This phenomenon suggests that our perception of other people’s overall personality is hugely influenced by a quality that we focus on.

8. Cognitive Dissonance

There are experiences in our lives when our beliefs and behaviors do not align with each other and we try to justify them in our minds. This is cognitive dissonance , which was studied in an experiment by Leon Festinger and James Carlsmith back in 1959.

In this experiment, participants had to go through a series of boring and repetitive tasks, such as spending an hour turning pegs in a wooden knob. After completing the tasks, they were then paid either $1 or $20 to tell the next participants that the tasks were extremely fun and enjoyable. Afterwards, participants were asked to rate the experiment. Those who were given $1 rated the experiment as more interesting and fun than those who received $20.

The results showed that those who received a smaller incentive to lie experienced cognitive dissonance — $1 wasn’t enough incentive for that one hour of painstakingly boring activity, so the participants had to justify that they had fun anyway.

Famous Case Studies in Psychology

9. little albert.

In 1920, behaviourist theorists John Watson and Rosalie Rayner experimented on a 9-month-old baby to test the effects of classical conditioning in instilling fear in humans.

This was such a controversial study that it gained popularity in psychology textbooks and syllabi because it is a classic example of unethical research studies done in the name of science.

In one of the experiments, Little Albert was presented with a harmless stimulus or object, a white rat, which he wasn’t scared of at first. But every time Little Albert would see the white rat, the researchers would play a scary sound of hammer and steel. After about 6 pairings, Little Albert learned to fear the rat even without the scary sound.

Little Albert developed signs of fear to different objects presented to him through classical conditioning . He even generalized his fear to other stimuli not present in the course of the experiment.

10. Phineas Gage

Phineas Gage is such a celebrity in Psych 101 classes, even though the way he rose to popularity began with a tragic accident. He was a resident of Central Vermont and worked in the construction of a new railway line in the mid-1800s. One day, an explosive went off prematurely, sending a tamping iron straight into his face and through his brain.

Gage survived the accident, fortunately, something that is considered a feat even up to this day. He managed to find a job as a stagecoach after the accident. However, his family and friends reported that his personality changed so much that “he was no longer Gage” (Harlow, 1868).

New evidence on the case of Phineas Gage has since come to light, thanks to modern scientific studies and medical tests. However, there are still plenty of mysteries revolving around his brain damage and subsequent recovery.

11. Anna O.

Anna O., a social worker and feminist of German Jewish descent, was one of the first patients to receive psychoanalytic treatment.

Her real name was Bertha Pappenheim and she inspired much of Sigmund Freud’s works and books on psychoanalytic theory, although they hadn’t met in person. Their connection was through Joseph Breuer, Freud’s mentor when he was still starting his clinical practice.

Anna O. suffered from paralysis, personality changes, hallucinations, and rambling speech, but her doctors could not find the cause. Joseph Breuer was then called to her house for intervention and he performed psychoanalysis, also called the “talking cure”, on her.

Breuer would tell Anna O. to say anything that came to her mind, such as her thoughts, feelings, and childhood experiences. It was noted that her symptoms subsided by talking things out.

However, Breuer later referred Anna O. to the Bellevue Sanatorium, where she recovered and set out to be a renowned writer and advocate of women and children.

12. Patient HM

H.M., or Henry Gustav Molaison, was a severe amnesiac who had been the subject of countless psychological and neurological studies.

Henry was 27 when he underwent brain surgery to cure the epilepsy that he had been experiencing since childhood. In an unfortunate turn of events, he lost his memory because of the surgery and his brain also became unable to store long-term memories.

He was then regarded as someone living solely in the present, forgetting an experience as soon as it happened and only remembering bits and pieces of his past. Over the years, his amnesia and the structure of his brain had helped neuropsychologists learn more about cognitive functions .

Suzanne Corkin, a researcher, writer, and good friend of H.M., recently published a book about his life. Entitled Permanent Present Tense , this book is both a memoir and a case study following the struggles and joys of Henry Gustav Molaison.

13. Chris Sizemore

Chris Sizemore gained celebrity status in the psychology community when she was diagnosed with multiple personality disorder, now known as dissociative identity disorder.

Sizemore has several alter egos, which included Eve Black, Eve White, and Jane. Various papers about her stated that these alter egos were formed as a coping mechanism against the traumatic experiences she underwent in her childhood.

Sizemore said that although she has succeeded in unifying her alter egos into one dominant personality, there were periods in the past experienced by only one of her alter egos. For example, her husband married her Eve White alter ego and not her.

Her story inspired her psychiatrists to write a book about her, entitled The Three Faces of Eve , which was then turned into a 1957 movie of the same title.

14. David Reimer

When David was just 8 months old, he lost his penis because of a botched circumcision operation.

Psychologist John Money then advised Reimer’s parents to raise him as a girl instead, naming him Brenda. His gender reassignment was supported by subsequent surgery and hormonal therapy.

Money described Reimer’s gender reassignment as a success, but problems started to arise as Reimer was growing up. His boyishness was not completely subdued by the hormonal therapy. When he was 14 years old, he learned about the secrets of his past and he underwent gender reassignment to become male again.

Reimer became an advocate for children undergoing the same difficult situation he had been. His life story ended when he was 38 as he took his own life.

15. Kim Peek

Kim Peek was the inspiration behind Rain Man , an Oscar-winning movie about an autistic savant character played by Dustin Hoffman.

The movie was released in 1988, a time when autism wasn’t widely known and acknowledged yet. So it was an eye-opener for many people who watched the film.

In reality, Kim Peek was a non-autistic savant. He was exceptionally intelligent despite the brain abnormalities he was born with. He was like a walking encyclopedia, knowledgeable about travel routes, US zip codes, historical facts, and classical music. He also read and memorized approximately 12,000 books in his lifetime.

This list of experiments and case studies in psychology is just the tip of the iceberg! There are still countless interesting psychology studies that you can explore if you want to learn more about human behavior and dynamics.

You can also conduct your own mini-experiment or participate in a study conducted in your school or neighborhood. Just remember that there are ethical standards to follow so as not to repeat the lasting physical and emotional harm done to Little Albert or the Stanford Prison Experiment participants.

Asch, S. E. (1956). Studies of independence and conformity: I. A minority of one against a unanimous majority. Psychological Monographs: General and Applied, 70 (9), 1–70. https://doi.org/10.1037/h0093718

Bandura, A., Ross, D., & Ross, S. A. (1961). Transmission of aggression through imitation of aggressive models. The Journal of Abnormal and Social Psychology, 63 (3), 575–582. https://doi.org/10.1037/h0045925

Elliott, J., Yale University., WGBH (Television station : Boston, Mass.), & PBS DVD (Firm). (2003). A class divided. New Haven, Conn.: Yale University Films.

Festinger, L., & Carlsmith, J. M. (1959). Cognitive consequences of forced compliance. The Journal of Abnormal and Social Psychology, 58 (2), 203–210. https://doi.org/10.1037/h0041593

Haney, C., Banks, W. C., & Zimbardo, P. G. (1973). A study of prisoners and guards in a simulated prison. Naval Research Review , 30 , 4-17.

Latane, B., & Darley, J. M. (1968). Group inhibition of bystander intervention in emergencies. Journal of Personality and Social Psychology, 10 (3), 215–221. https://doi.org/10.1037/h0026570

Mischel, W. (2014). The Marshmallow Test: Mastering self-control. Little, Brown and Co.

Thorndike, E. (1920) A Constant Error in Psychological Ratings. Journal of Applied Psychology , 4 , 25-29. http://dx.doi.org/10.1037/h0071663

Watson, J. B., & Rayner, R. (1920). Conditioned emotional reactions. Journal of experimental psychology , 3 (1), 1.

Chris Drew (PhD) https://helpfulprofessor.com/author/chris-drew-phd/ 101 Class Group Name Ideas (for School Students)
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Psychology’s 10 Greatest Case Studies – Digested

These ten characters have all had a huge influence on psychology and their stories continue to intrigue each new generation of students.

27 November 2015

By Christian Jarrett

These ten characters have all had a huge influence on psychology and their stories continue to intrigue each new generation of students. What's particularly fascinating is that many of their stories continue to evolve – new evidence comes to light, or new technologies are brought to bear, changing how the cases are interpreted and understood. What many of these 10 also have in common is that they speak to some of the perennial debates in psychology, about personality and identity, nature and nurture, and the links between mind and body.

Phineas Gage

One day in 1848 in Central Vermont, Phineas Gage was tamping explosives into the ground to prepare the way for a new railway line when he had a terrible accident. The detonation went off prematurely, and his tamping iron shot into his face, through his brain, and out the top of his head. Remarkably Gage survived, although his friends and family reportedly felt he was changed so profoundly (becoming listless and aggressive) that "he was no longer Gage."

There the story used to rest – a classic example of frontal brain damage affecting personality. However, recent years have seen a drastic reevaluation of Gage's story in light of new evidence. It's now believed that he underwent significant rehabilitation and in fact began work as a horse carriage driver in Chile. A simulation of his injuries suggested much of his right frontal cortex was likely spared, and photographic evidence has been unearthed showing a post-accident dapper Gage. Not that you'll find this revised account in many psychology textbooks: a recent analysis showed that few of them have kept up to date with the new evidence.

See also Jim Horne's ' Blasts from the past ', looking back at similar accounts from the era.

Henry Gustav Molaison (known for years as H.M. in the literature to protect his privacy), who died in 2008, developed severe amnesia at age 27 after undergoing brain surgery as a form of treatment for the epilepsy he'd suffered since childhood. He was subsequently the focus of study by over 100 psychologists and neuroscientists and he's been mentioned in over 12,000 journal articles! Molaison's surgery involved the removal of large parts of the hippocampus on both sides of his brain and the result was that he was almost entirely unable to store any new information in long-term memory (there were some exceptions – for example, after 1963 he was aware that a US president had been assassinated in Dallas). The extremity of Molaison's deficits was a surprise to experts of the day because many of them believed that memory was distributed throughout the cerebral cortex.

Today, Molaison's legacy lives on: his brain was carefully sliced and preserved and turned into a 3D digital atlas and his life story is reportedly due to be turned into a feature film based on the book researcher Suzanne Corkin wrote about him: Permanent Present Tense, The Man With No Memory and What He Taught The World .

See also 'Understanding amnesia - Is it time to forget H.M.?'

Victor Leborgne (nickname "Tan")

In 1861, aged 51, Leborgne was referred to the renowned neurologist Paul Broca, but died soon after. Broca examined Leborgne's brain and noticed a lesion in his left frontal lobe – a segment of tissue now known as Broca's area. Given Leborgne's impaired speech but intact comprehension, Broca concluded that this area of the brain was responsible for speech production and he set about persuading his peers of this fact – now recognised as a key moment in psychology's history.

For decades little was known about Leborgne, besides his important contribution to science. However, in a paper published in 2013, Cezary Domanski at Maria Curie-Sklodowska University in Poland uncovered new biographical details, including the possibility that Leborgne muttered the word "Tan" because his birthplace of Moret, home to several tanneries.

See also ' Glimpsed at last ', and ' Using brain imaging to re-evaluate psychology's three most famous cases '.

Wild Boy of Aveyron

The "Wild boy of Aveyron" – named Victor by the physician Jean-Marc Itard – was found emerging from Aveyron forest in South West France in 1800, aged 11 or 12, where's it's thought he had been living in the wild for several years. For psychologists and philosophers, Victor became a kind of "natural experiment" into the question of nature and nurture. How would he be affected by the lack of human input early in his life?

Those who hoped Victor would support the notion of the "noble savage" uncorrupted by modern civilisation were largely disappointed: the boy was dirty and dishevelled, defecated where he stood and apparently motivated largely by hunger. Victor acquired celebrity status after he was transported to Paris and Itard began a mission to teach and socialise the "feral child". This programme met with mixed success: Victor never learned to speak fluently, but he dressed, learned civil toilet habits, could write a few letters and acquired some very basic language comprehension. Autism expert Uta Frith believes Victor may have been abandoned because he was autistic, but she acknowledges we will never know the truth of his background.

Victor's story inspired the 2004 novel The Wild Boy and was dramatised in the 1970 French film The Wild Child .

Listen to an episode of 'The Mind Changers'.

Nicknamed 'Kim-puter' by his friends, Peek who died in 2010 aged 58, was the inspiration for Dustin Hoffman's autistic savant character in the multi-Oscar-winning film Rain Man . Before that movie, which was released in 1988, few people had heard of autism, so Peek via the film can be credited with helping to raise the profile of the condition.

Arguably though, the film also helped spread the popular misconception that giftedness is a hallmark of autism (in one notable scene, Hoffman's character deduces in an instant the precise number of cocktail sticks – 246 – that a waitress drops on the floor). Peek himself was actually a non-autistic savant, born with brain abnormalities including a malformed cerebellum and an absent corpus callosum (the massive bundle of tissue that usually connects the two hemispheres). His savant skills were astonishing and included calendar calculation, as well as an encyclopaedic knowledge of history, literature, classical music, US zip codes and travel routes. It was estimated that he read more than 12,000 books in his life time, all of them committed to flawless memory. Although outgoing and sociable, Peek had coordination problems and struggled with abstract or conceptual thinking.

"Anna O." is the pseudonym for Bertha Pappenheim, a pioneering German Jewish feminist and social worker who died in 1936 aged 77. As Anna O. she is known as one of the first ever patients to undergo psychoanalysis and her case inspired much of Freud's thinking on mental illness. Pappenheim first came to the attention of another psychoanalyst, Joseph Breuer, in 1880 when he was called to her house in Vienna where she was lying in bed, almost entirely paralysed. Her other symptoms include hallucinations, personality changes and rambling speech, but doctors could find no physical cause.

For 18 months, Breuer visited her almost daily and talked to her about her thoughts and feelings, including her grief for her father, and the more she talked, the more her symptoms seemed to fade – this was apparently one of the first ever instances of psychoanalysis or "the talking cure", although the degree of Breuer's success has been disputed and some historians allege that Pappenheim did have an organic illness, such as epilepsy.

Although Freud never met Pappenheim, he wrote about her case, including the notion that she had a hysterical pregnancy, although this too is disputed. The latter part of Pappenheim's life in Germany post 1888 is as remarkable as her time as Anna O. She became a prolific writer and social pioneer, including authoring stories, plays, and translating seminal texts, and she founded social clubs for Jewish women, worked in orphanages and founded the German Federation of Jewish Women.

Kitty Genovese

Sadly, it is not really Kitty Genovese the person who has become one of psychology's classic case studies, but rather the terrible fate that befell her. In 1964 in New York, Genovese was returning home from her job as a bar maid when she was attacked and eventually murdered by Winston Mosely. What made this tragedy so influential to psychology was that it inspired research into what became known as the Bystander Phenomenon – the now well-established finding that our sense of individual responsibility is diluted by the presence of other people. According to folklore, 38 people watched Genovese's demise yet not one of them did anything to help, apparently a terrible real life instance of the Bystander Effect.

However, the story doesn't end there because historians have since established the reality was much more complicated – at least two people did try to summon help, and actually there was only one witness the second and fatal attack. While the main principle of the Bystander Effect has stood the test of time, modern psychology's understanding of the way it works has become a lot more nuanced. For example, there's evidence that in some situations people are more likely to act when they're part of a larger group, such as when they and the other group members all belong to the same social category (such as all being women) as the victim.

See also another angle , on false confessions.

Little Albert

"Little Albert" was the nickname that the pioneering behaviourist psychologist John Watson gave to an 11-month-old baby, in whom, with his colleague and future wife Rosalind Rayner, he deliberately attempted to instill certain fears through a process of conditioning. The research, which was of dubious scientific quality, was conducted in 1920 and has become notorious for being so unethical (such a procedure would never be given approval in modern university settings).

Interest in Little Albert has reignited in recent years as an academic quarrel has erupted over his true identity. A group led by Hall Beck at Appalachian University announced in 2011 that they thought Little Albert was actually Douglas Merritte, the son of a wet nurse at John Hopkins University where Watson and Rayner were based. According to this sad account, Little Albert was neurologically impaired, compounding the unethical nature of the Watson/Rayner research, and he died aged six of hydrocephalus (fluid on the brain).

However, this account was challenged by a different group of scholars led by Russell Powell at MacEwan University in 2014. They established that Little Albert was more likely William A Barger (recorded in his medical file as Albert Barger), the son of a different wet nurse. Earlier this year, textbook writer Richard Griggs weighed up all the evidence and concluded that the Barger story is the more credible, which would mean that Little Albert in fact died 2007 aged 87.

Chris Sizemore

In recent years, Sizemore has described how her alter egos have been combined into one united personality for many decades, but she still sees different aspects of her past as belonging to her different personalities. For example, she has stated that her husband was married to Eve White (not her), and that Eve White is the mother of her first daughter. Her story was turned into a movie in 1957 called The Three Faces of Eve (based on a book of the same name written by her psychiatrists). Joanne Woodward won the best actress Oscar for portraying Sizemore and her various personalities in this film. Sizemore published her autobiography in 1977 called I'm Eve . In 2009, she appeared on the BBC's Hard Talk interview show.

David Reimer

One of the most famous patients in psychology, Reimer lost his penis in a botched circumcision operation when he was just 8 months old. His parents were subsequently advised by psychologist John Money to raise Reimer as a girl, "Brenda", and for him to undergo further surgery and hormone treatment to assist his gender reassignment. Money initially described the experiment (no one had tried anything like this before) as a huge success that appeared to support his belief in the important role of socialisation, rather than innate factors, in children's gender identity.

In fact, the reassignment was seriously problematic and Reimer's boyishness was never far beneath the surface. When he was aged 14, Reimer was told the truth about his past and set about reversing the gender reassignment process to become male again. He later campaigned against other children with genital injuries being gender reassigned in the way that he had been. His story was turned into the book As Nature Made Him, The Boy Who Was Raised As A Girl by John Colapinto, and he is the subject of two BBC Horizon documentaries. Tragically, Reimer took his own life in 2004, aged just 38.

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Psychology’s 10 greatest case studies – digested

These ten characters have all had a huge influence on psychology and their stories continue to intrigue each new generation of students. What’s particularly fascinating is that many of their stories continue to evolve – new evidence comes to light, or new technologies are brought to bear, changing how the cases are interpreted and understood. What many of these 10 also have in common is that they speak to some of the perennial debates in psychology, about personality and identity, nature and nurture, and the links between mind and body.

Phineas Gage

Remarkably Gage survived, although his friends and family reportedly felt he was changed so profoundly (becoming listless and aggressive) that “he was no longer Gage.” There the story used to rest – a classic example of frontal brain damage affecting personality. However, recent years have seen a drastic reevaluation of Gage’s story in light of new evidence. It’s now believed that he underwent significant rehabilitation and in fact began work as a horse carriage driver in Chile. A simulation of his injuries suggested much of his right frontal cortex was likely spared, and photographic evidence has been unearthed showing a post-accident dapper Gage. Not that you’ll find this revised account in many psychology textbooks: a recent analysis showed that few of them have kept up to date with the new evidence.

Henry Gustav Molaison (known for years as H.M. in the literature to protect his privacy), who died in 2008, developed severe amnesia at age 27 after undergoing brain surgery as a form of treatment for the epilepsy he’d suffered since childhood. He was subsequently the focus of study by over 100 psychologists and neuroscientists and he’s been mentioned in over 12,000 journal articles! Molaison’s surgery involved the removal of large parts of the hippocampus on both sides of his brain and the result was that he was almost entirely unable to store any new information in long-term memory (there were some exceptions – for example, after 1963 he was aware that a US president had been assassinated in Dallas). The extremity of Molaison’s deficits was a surprise to experts of the day because many of them believed that memory was distributed throughout the cerebral cortex. Today, Molaison’s legacy lives on: his brain was carefully sliced and preserved and turned into a 3D digital atlas and his life story is reportedly due to be turned into a feature film based on the book researcher Suzanne Corkin wrote about him: Permanent Present Tense, The Man With No Memory and What He Taught The World .

Victor Leborgne (nickname “Tan”)

The fact that, in most people, language function is served predominantly by the left frontal cortex has today almost become common knowledge, at least among psych students. However, back in the early nineteenth century, the consensus view was that language function (like memory, see entry for H.M.) was distributed through the brain. An eighteenth century patient who helped change that was Victor Leborgne, a Frenchman who was nicknamed “Tan” because that was the only sound he could utter (besides the expletive phrase “sacre nom de Dieu”). In 1861, aged 51, Leborgne was referred to the renowned neurologist Paul Broca, but died soon after. Broca examined Leborgne’s brain and noticed a lesion in his left frontal lobe – a segment of tissue now known as Broca’s area. Given Leborgne’s impaired speech but intact comprehension, Broca concluded that this area of the brain was responsible for speech production and he set about persuading his peers of this fact – now recognised as a key moment in psychology’s history. For decades little was known about Leborgne, besides his important contribution to science. However, in a paper published in 2013, Cezary Domanski at Maria Curie-Sklodowska University in Poland uncovered new biographical details, including the possibility that Leborgne muttered the word “Tan” because his birthplace of Moret, home to several tanneries.

Wild Boy of Aveyron

The “Wild boy of Aveyron” – named Victor by the physician Jean-Marc Itard – was found emerging from Aveyron forest in South West France in 1800, aged 11 or 12, where’s it’s thought he had been living in the wild for several years. For psychologists and philosophers, Victor became a kind of “natural experiment” into the question of nature and nurture. How would he be affected by the lack of human input early in his life? Those who hoped Victor would support the notion of the “noble savage” uncorrupted by modern civilisation were largely disappointed: the boy was dirty and dishevelled, defecated where he stood and apparently motivated largely by hunger. Victor acquired celebrity status after he was transported to Paris and Itard began a mission to teach and socialise the “feral child”. This programme met with mixed success: Victor never learned to speak fluently, but he dressed, learned civil toilet habits, could write a few letters and acquired some very basic language comprehension. Autism expert Uta Frith believes Victor may have been abandoned because he was autistic, but she acknowledges we will never know the truth of his background. Victor’s story inspired the 2004 novel The Wild Boy and was dramatised in the 1970 French film The Wild Child .

Nicknamed ‘Kim-puter’ by his friends, Peek who died in 2010 aged 58, was the inspiration for Dustin Hoffman’s autistic savant character in the multi-Oscar-winning film Rain Man . Before that movie, which was released in 1988, few people had heard of autism, so Peek via the film can be credited with helping to raise the profile of the condition. Arguably though, the film also helped spread the popular misconception that giftedness is a hallmark of autism (in one notable scene, Hoffman’s character deduces in an instant the precise number of cocktail sticks – 246 – that a waitress drops on the floor). Peek himself was actually a non-autistic savant, born with brain abnormalities including a malformed cerebellum and an absent corpus callosum (the massive bundle of tissue that usually connects the two hemispheres). His savant skills were astonishing and included calendar calculation, as well as an encyclopaedic knowledge of history, literature, classical music, US zip codes and travel routes. It was estimated that he read more than 12,000 books in his life time, all of them committed to flawless memory. Although outgoing and sociable, Peek had coordination problems and struggled with abstract or conceptual thinking.

“Anna O.” is the pseudonym for Bertha Pappenheim, a pioneering German Jewish feminist and social worker who died in 1936 aged 77. As Anna O. she is known as one of the first ever patients to undergo psychoanalysis and her case inspired much of Freud’s thinking on mental illness. Pappenheim first came to the attention of another psychoanalyst, Joseph Breuer, in 1880 when he was called to her house in Vienna where she was lying in bed, almost entirely paralysed. Her other symptoms include hallucinations, personality changes and rambling speech, but doctors could find no physical cause. For 18 months, Breuer visited her almost daily and talked to her about her thoughts and feelings, including her grief for her father, and the more she talked, the more her symptoms seemed to fade – this was apparently one of the first ever instances of psychoanalysis or “the talking cure”, although the degree of Breuer’s success has been disputed and some historians allege that Pappenheim did have an organic illness, such as epilepsy. Although Freud never met Pappenheim, he wrote about her case, including the notion that she had a hysterical pregnancy, although this too is disputed. The latter part of Pappenheim’s life in Germany post 1888 is as remarkable as her time as Anna O. She became a prolific writer and social pioneer, including authoring stories, plays, and translating seminal texts, and she founded social clubs for Jewish women, worked in orphanages and founded the German Federation of Jewish Women.

Kitty Genovese

Sadly, it is not really Kitty Genovese the person who has become one of psychology’s classic case studies, but rather the terrible fate that befell her. In 1964 in New York, Genovese was returning home from her job as a bar maid when she was attacked and eventually murdered by Winston Mosely. What made this tragedy so influential to psychology was that it inspired research into what became known as the Bystander Phenomenon – the now well-established finding that our sense of individual responsibility is diluted by the presence of other people. According to folklore, 38 people watched Genovese’s demise yet not one of them did anything to help, apparently a terrible real life instance of the Bystander Effect. However, the story doesn’t end there because historians have since established the reality was much more complicated – at least two people did try to summon help, and actually there was only one witness the second and fatal attack. While the main principle of the Bystander Effect has stood the test of time, modern psychology’s understanding of the way it works has become a lot more nuanced. For example, there’s evidence that in some situations people are more likely to act when they’re part of a larger group, such as when they and the other group members all belong to the same social category (such as all being women) as the victim.

Little Albert

“Little Albert” was the nickname that the pioneering behaviourist psychologist John Watson gave to an 11-month-old baby, in whom, with his colleague and future wife Rosalind Rayner, he deliberately attempted to instill certain fears through a process of conditioning. The research, which was of dubious scientific quality, was conducted in 1920 and has become notorious for being so unethical (such a procedure would never be given approval in modern university settings). Interest in Little Albert has reignited in recent years as an academic quarrel has erupted over his true identity. A group led by Hall Beck at Appalachian University announced in 2011 that they thought Little Albert was actually Douglas Merritte, the son of a wet nurse at John Hopkins University where Watson and Rayner were based. According to this sad account, Little Albert was neurologically impaired, compounding the unethical nature of the Watson/Rayner research, and he died aged six of hydrocephalus (fluid on the brain). However, this account was challenged by a different group of scholars led by Russell Powell at MacEwan University in 2014. They established that Little Albert was more likely William A Barger (recorded in his medical file as Albert Barger), the son of a different wet nurse. Earlier this year, textbook writer Richard Griggs weighed up all the evidence and concluded that the Barger story is the more credible, which would mean that Little Albert in fact died 2007 aged 87.

Chris Sizemore

Chris Costner Sizemore is one of the most famous patients to be given the controversial diagnosis of multiple personality disorder, known today as dissociative identity disorder. Sizemore’s alter egos apparently included Eve White, Eve Black, Jane and many others. By some accounts, Sizemore expressed these personalities as a coping mechanism in the face of traumas she experienced in childhood, including seeing her mother badly injured and a man sawn in half at a lumber mill. In recent years, Sizemore has described how her alter egos have been combined into one united personality for many decades, but she still sees different aspects of her past as belonging to her different personalities. For example, she has stated that her husband was married to Eve White (not her), and that Eve White is the mother of her first daughter. Her story was turned into a movie in 1957 called The Three Faces of Eve (based on a book of the same name written by her psychiatrists). Joanne Woodward won the best actress Oscar for portraying Sizemore and her various personalities in this film. Sizemore published her autobiography in 1977 called I’m Eve . In 2009, she appeared on the BBC’s Hard Talk interview show.

David Reimer

Money initially described the experiment (no one had tried anything like this before) as a huge success that appeared to support his belief in the important role of socialisation, rather than innate factors, in children’s gender identity. In fact, the reassignment was seriously problematic and Reimer’s boyishness was never far beneath the surface. When he was aged 14, Reimer was told the truth about his past and set about reversing the gender reassignment process to become male again. He later campaigned against other children with genital injuries being gender reassigned in the way that he had been. His story was turned into the book As Nature Made Him, The Boy Who Was Raised As A Girl by John Colapinto, and he is the subject of two BBC Horizon documentaries. Tragically, Reimer took his own life in 2004, aged just 38.

Christian Jarrett ( @Psych_Writer ) is Editor of BPS Research Digest

This article was originally published on BPS Research Digest . Read the original article .

Einstein with his class of students in 1896

Case Study Research Method in Psychology

Saul Mcleod, PhD

Editor-in-Chief for Simply Psychology

BSc (Hons) Psychology, MRes, PhD, University of Manchester

Saul Mcleod, PhD., is a qualified psychology teacher with over 18 years of experience in further and higher education. He has been published in peer-reviewed journals, including the Journal of Clinical Psychology.

Learn about our Editorial Process

Olivia Guy-Evans, MSc

Associate Editor for Simply Psychology

BSc (Hons) Psychology, MSc Psychology of Education

Olivia Guy-Evans is a writer and associate editor for Simply Psychology. She has previously worked in healthcare and educational sectors.

On This Page:

Case studies are in-depth investigations of a person, group, event, or community. Typically, data is gathered from various sources using several methods (e.g., observations & interviews).

The case study research method originated in clinical medicine (the case history, i.e., the patient’s personal history). In psychology, case studies are often confined to the study of a particular individual.

The information is mainly biographical and relates to events in the individual’s past (i.e., retrospective), as well as to significant events that are currently occurring in his or her everyday life.

The case study is not a research method, but researchers select methods of data collection and analysis that will generate material suitable for case studies.

Freud (1909a, 1909b) conducted very detailed investigations into the private lives of his patients in an attempt to both understand and help them overcome their illnesses.

This makes it clear that the case study is a method that should only be used by a psychologist, therapist, or psychiatrist, i.e., someone with a professional qualification.

There is an ethical issue of competence. Only someone qualified to diagnose and treat a person can conduct a formal case study relating to atypical (i.e., abnormal) behavior or atypical development.

Famous Case Studies

Anna O – One of the most famous case studies, documenting psychoanalyst Josef Breuer’s treatment of “Anna O” (real name Bertha Pappenheim) for hysteria in the late 1800s using early psychoanalytic theory.
Little Hans – A child psychoanalysis case study published by Sigmund Freud in 1909 analyzing his five-year-old patient Herbert Graf’s house phobia as related to the Oedipus complex.
Bruce/Brenda – Gender identity case of the boy (Bruce) whose botched circumcision led psychologist John Money to advise gender reassignment and raise him as a girl (Brenda) in the 1960s.
Genie Wiley – Linguistics/psychological development case of the victim of extreme isolation abuse who was studied in 1970s California for effects of early language deprivation on acquiring speech later in life.
Phineas Gage – One of the most famous neuropsychology case studies analyzes personality changes in railroad worker Phineas Gage after an 1848 brain injury involving a tamping iron piercing his skull.

Clinical Case Studies

Studying the effectiveness of psychotherapy approaches with an individual patient
Assessing and treating mental illnesses like depression, anxiety disorders, PTSD
Neuropsychological cases investigating brain injuries or disorders

Child Psychology Case Studies

Studying psychological development from birth through adolescence
Cases of learning disabilities, autism spectrum disorders, ADHD
Effects of trauma, abuse, deprivation on development

Types of Case Studies

Explanatory case studies : Used to explore causation in order to find underlying principles. Helpful for doing qualitative analysis to explain presumed causal links.
Exploratory case studies : Used to explore situations where an intervention being evaluated has no clear set of outcomes. It helps define questions and hypotheses for future research.
Descriptive case studies : Describe an intervention or phenomenon and the real-life context in which it occurred. It is helpful for illustrating certain topics within an evaluation.
Multiple-case studies : Used to explore differences between cases and replicate findings across cases. Helpful for comparing and contrasting specific cases.
Intrinsic : Used to gain a better understanding of a particular case. Helpful for capturing the complexity of a single case.
Collective : Used to explore a general phenomenon using multiple case studies. Helpful for jointly studying a group of cases in order to inquire into the phenomenon.

Where Do You Find Data for a Case Study?

There are several places to find data for a case study. The key is to gather data from multiple sources to get a complete picture of the case and corroborate facts or findings through triangulation of evidence. Most of this information is likely qualitative (i.e., verbal description rather than measurement), but the psychologist might also collect numerical data.

1. Primary sources

Interviews – Interviewing key people related to the case to get their perspectives and insights. The interview is an extremely effective procedure for obtaining information about an individual, and it may be used to collect comments from the person’s friends, parents, employer, workmates, and others who have a good knowledge of the person, as well as to obtain facts from the person him or herself.
Observations – Observing behaviors, interactions, processes, etc., related to the case as they unfold in real-time.
Documents & Records – Reviewing private documents, diaries, public records, correspondence, meeting minutes, etc., relevant to the case.

2. Secondary sources

News/Media – News coverage of events related to the case study.
Academic articles – Journal articles, dissertations etc. that discuss the case.
Government reports – Official data and records related to the case context.
Books/films – Books, documentaries or films discussing the case.

3. Archival records

Searching historical archives, museum collections and databases to find relevant documents, visual/audio records related to the case history and context.

Public archives like newspapers, organizational records, photographic collections could all include potentially relevant pieces of information to shed light on attitudes, cultural perspectives, common practices and historical contexts related to psychology.

4. Organizational records

Organizational records offer the advantage of often having large datasets collected over time that can reveal or confirm psychological insights.

Of course, privacy and ethical concerns regarding confidential data must be navigated carefully.

However, with proper protocols, organizational records can provide invaluable context and empirical depth to qualitative case studies exploring the intersection of psychology and organizations.

Organizational/industrial psychology research : Organizational records like employee surveys, turnover/retention data, policies, incident reports etc. may provide insight into topics like job satisfaction, workplace culture and dynamics, leadership issues, employee behaviors etc.
Clinical psychology : Therapists/hospitals may grant access to anonymized medical records to study aspects like assessments, diagnoses, treatment plans etc. This could shed light on clinical practices.
School psychology : Studies could utilize anonymized student records like test scores, grades, disciplinary issues, and counseling referrals to study child development, learning barriers, effectiveness of support programs, and more.

How do I Write a Case Study in Psychology?

Follow specified case study guidelines provided by a journal or your psychology tutor. General components of clinical case studies include: background, symptoms, assessments, diagnosis, treatment, and outcomes. Interpreting the information means the researcher decides what to include or leave out. A good case study should always clarify which information is the factual description and which is an inference or the researcher’s opinion.

1. Introduction

Provide background on the case context and why it is of interest, presenting background information like demographics, relevant history, and presenting problem.
Compare briefly to similar published cases if applicable. Clearly state the focus/importance of the case.

2. Case Presentation

Describe the presenting problem in detail, including symptoms, duration,and impact on daily life.
Include client demographics like age and gender, information about social relationships, and mental health history.
Describe all physical, emotional, and/or sensory symptoms reported by the client.
Use patient quotes to describe the initial complaint verbatim. Follow with full-sentence summaries of relevant history details gathered, including key components that led to a working diagnosis.
Summarize clinical exam results, namely orthopedic/neurological tests, imaging, lab tests, etc. Note actual results rather than subjective conclusions. Provide images if clearly reproducible/anonymized.
Clearly state the working diagnosis or clinical impression before transitioning to management.

3. Management and Outcome

Indicate the total duration of care and number of treatments given over what timeframe. Use specific names/descriptions for any therapies/interventions applied.
Present the results of the intervention,including any quantitative or qualitative data collected.
For outcomes, utilize visual analog scales for pain, medication usage logs, etc., if possible. Include patient self-reports of improvement/worsening of symptoms. Note the reason for discharge/end of care.

4. Discussion

Analyze the case, exploring contributing factors, limitations of the study, and connections to existing research.
Analyze the effectiveness of the intervention,considering factors like participant adherence, limitations of the study, and potential alternative explanations for the results.
Identify any questions raised in the case analysis and relate insights to established theories and current research if applicable. Avoid definitive claims about physiological explanations.
Offer clinical implications, and suggest future research directions.

5. Additional Items

Thank specific assistants for writing support only. No patient acknowledgments.
References should directly support any key claims or quotes included.
Use tables/figures/images only if substantially informative. Include permissions and legends/explanatory notes.
Provides detailed (rich qualitative) information.
Provides insight for further research.
Permitting investigation of otherwise impractical (or unethical) situations.

Case studies allow a researcher to investigate a topic in far more detail than might be possible if they were trying to deal with a large number of research participants (nomothetic approach) with the aim of ‘averaging’.

Because of their in-depth, multi-sided approach, case studies often shed light on aspects of human thinking and behavior that would be unethical or impractical to study in other ways.

Research that only looks into the measurable aspects of human behavior is not likely to give us insights into the subjective dimension of experience, which is important to psychoanalytic and humanistic psychologists.

Case studies are often used in exploratory research. They can help us generate new ideas (that might be tested by other methods). They are an important way of illustrating theories and can help show how different aspects of a person’s life are related to each other.

The method is, therefore, important for psychologists who adopt a holistic point of view (i.e., humanistic psychologists ).

Limitations

Lacking scientific rigor and providing little basis for generalization of results to the wider population.
Researchers’ own subjective feelings may influence the case study (researcher bias).
Difficult to replicate.
Time-consuming and expensive.
The volume of data, together with the time restrictions in place, impacted the depth of analysis that was possible within the available resources.

Because a case study deals with only one person/event/group, we can never be sure if the case study investigated is representative of the wider body of “similar” instances. This means the conclusions drawn from a particular case may not be transferable to other settings.

Because case studies are based on the analysis of qualitative (i.e., descriptive) data , a lot depends on the psychologist’s interpretation of the information she has acquired.

This means that there is a lot of scope for Anna O , and it could be that the subjective opinions of the psychologist intrude in the assessment of what the data means.

For example, Freud has been criticized for producing case studies in which the information was sometimes distorted to fit particular behavioral theories (e.g., Little Hans ).

This is also true of Money’s interpretation of the Bruce/Brenda case study (Diamond, 1997) when he ignored evidence that went against his theory.

Breuer, J., & Freud, S. (1895). Studies on hysteria . Standard Edition 2: London.

Curtiss, S. (1981). Genie: The case of a modern wild child .

Diamond, M., & Sigmundson, K. (1997). Sex Reassignment at Birth: Long-term Review and Clinical Implications. Archives of Pediatrics & Adolescent Medicine , 151(3), 298-304

Freud, S. (1909a). Analysis of a phobia of a five year old boy. In The Pelican Freud Library (1977), Vol 8, Case Histories 1, pages 169-306

Freud, S. (1909b). Bemerkungen über einen Fall von Zwangsneurose (Der “Rattenmann”). Jb. psychoanal. psychopathol. Forsch ., I, p. 357-421; GW, VII, p. 379-463; Notes upon a case of obsessional neurosis, SE , 10: 151-318.

Harlow J. M. (1848). Passage of an iron rod through the head. Boston Medical and Surgical Journal, 39 , 389–393.

Harlow, J. M. (1868). Recovery from the Passage of an Iron Bar through the Head . Publications of the Massachusetts Medical Society. 2 (3), 327-347.

Money, J., & Ehrhardt, A. A. (1972). Man & Woman, Boy & Girl : The Differentiation and Dimorphism of Gender Identity from Conception to Maturity. Baltimore, Maryland: Johns Hopkins University Press.

Money, J., & Tucker, P. (1975). Sexual signatures: On being a man or a woman.

Further Information

Case Study Approach
Case Study Method
Enhancing the Quality of Case Studies in Health Services Research
“We do things together” A case study of “couplehood” in dementia
Using mixed methods for evaluating an integrative approach to cancer care: a case study

The Top 10 Cases In The History Of Psychology

By MS Broudy
Published October 11, 2019
Last Updated November 13, 2023
Read Time 8 mins

Posted October 2019 by M.S. Broudy, B.A. English, B.A. Psychology; M.A. Social Psychology; Ph.D. Psychology; 6 updates since. Reading time: 8 min. Reading level: Grade 8+. Questions on the top cases in psychology history? Email Toni at: [email protected] .

Nothing captivates us more than the human mind. We are constantly attempting to understand the origins of behavior and the intricate workings of the brain. Throughout our history, there have been particular people whose story is so astonishing that they have remained a source of constant curiosity and learning. Here are 10 extraordinary cases from the realm of psychology that continue to fascinate.

Phineas Gage

In 1848, Phineas Gage was working as a foreman on a railroad crew in Vermont. While he was using a tamping iron to pack some explosive powder, the powder exploded, driving the iron through his head. Amazingly, he survived but friends noted that he no longer acted like the same person. He had limited intellectual ability and there were acute changes in his personality. He spewed profanity, was highly impulsive and showed little regard for other people. The change in Gage’s personality is consistent with damage to the orbitofrontal cortex of his frontal lobe, which impacts affect and emotion. It was one of the first cases to show a link between the brain and personality, in addition to cognitive functions.

Louis Victor Leborgne (Tan)

Similar to what H.M. did for memory, the case of Louis Victor Leborgne made significant contributions to the study of language production and comprehension. At age 30, he was admitted to a Paris hospital after losing his ability to speak. He could only say the word “tan” and was later called by that name in recalling his case. Despite his inability to speak, his cognitive functions appeared intact. Leborgne could comprehend what was being said to him and retained his intelligence. In 1861 he met physician Paul Broca after developing Gangrene. Upon Leborgne’s death, Broca examined his brain and found a lesion in his left frontal lobe. Due to Leborgne’s language, Broca postulated that this area of the brain was responsible for speech production. This area of the brain has become known as Broca’s area (Leborgne’s condition is called Broca’s aphasia) and is one of the most significant findings in the neurological study of speech.

Bertha Pappenheim (Anna O)

Bertha Pappenheim is thought to be the first person to undergo psychotherapy. Although her case is usually associated with the work of Sigmund Freud, it was his colleague, Joseph Breuer, who was initially her treating physician. Pappenheim suffered from “hysteria” as well as hallucinations and various ailments. Despite some records noting that she was cured by talk therapy, certain historians report that her improvements were temporary and she was never cured. Although Freud never met Pappenheim, he often publicly referred to Anna O. as the first recipient of the “talking cure” and said it was her case that was responsible for the birth of psychoanalysis.

Little Albert

In 1920, psychologist John Watson and his future wife, Rosalind Rayner, experimented on an infant to prove the theory of classical conditioning. They called the baby “Albert B.” And the case became known as the “Little Albert” experiment. Watson and Rayner paired a white rat and other objects with a loud noise to condition a fear response in Albert. The experiment showed that people can be conditioned to have emotional responses to a previously neutral object and that the response can be generalized to other stimuli. One of the most important conclusions drawn from the experiment is that early childhood experiences can influence later emotional development. Of course, scaring a baby for scientific purposes is now seen as highly unethical. The Little Albert experiment has become known as much for its lack of ethical boundaries as it has for its contributions to behavioral psychology.

Henry Gustav Molaison (H.M.)

In 1955, Henry Gustav Molaison (known frequently in the literature as H.M.) had brain surgery to cure himself of debilitating epilepsy. The surgery involved removing both halves of the hippocampus. Although the operation did relieve most of his seizures, it had an unintended effect: he could no longer form short-term memories. H.M. also suffered some retrograde amnesia, losing memories for 11 years before the operation. Otherwise, his long-term memory was intact. Because the surgery was so precise, it perfectly exhibited the role of the hippocampus in memory creation. H.M. was studied for the rest of his life and, upon his death, donated his brain to science. It would not be a stretch to say that he contributed more to the study of memory than any one subject.

Kitty Genovese

In 1964, Kitty Genovese was murdered on the street in Queens, New York. At the time, it was reported that a multitude of people saw her get killed and did nothing about it. Ever since, this event has been promoted as a prime example of the Bystander Effect: the more people that witness an event, the less likely they are to do something about it. Later investigations found that there were some discrepancies in the reporting and a couple of people at the scene may have indeed tried to report the crime. Although the basic principle of the Bystander Effect has held up over the past 50 years, the real legacy of the case is the research and activism it has inspired. The Genovese case has spurred an immense amount of psychological study across different areas, including forensic psychology and prosocial behavior. Additionally, it impacted the creation of victim services, Good Samaritan laws, and the 911 emergency call system.

Chris Costner Sizemore

You may not know the name Chris Costner Sizemore but you may have heard about her life in the movie “The Three Faces of Eve”. Sizemore’s case is one of the first and most famous involving multiple personalities, which is now known as Dissociative Identity Disorder. Until the publicity of her case, the possibility that people could have multiple personalities was, for most, a fantastical notion rather than a reality. In addition, Sizemore’s case shines a light on severe psychological consequences of early childhood trauma. Sizemore believes her different personalities developed as a way to cope with certain disturbing experiences she had when she was younger. After three of her personalities were publicized in the movie, she says she continued to experience other personalities throughout her life.

Genie was brought up in a house of extreme abuse and neglect. For most of her first 13 years, she was strapped onto a chair in a single room with almost no human interaction. When Genie was found, she possessed the development level of a one-year-old. She worked with numerous professionals and learned to develop motor skills and how to comprehend language. She also obtained a decent vocabulary, but could not catch up on her grammatical skills. It seemed Genie had missed a critical period of language development, proving you cannot learn grammatical language later in life. In addition to speech development, the case of Genie exhibits the effects of severe abuse and neglect. It also illustrates the great resiliency of human beings to overcome deprivation.

Kim Peek was the inspiration for Dustin Hoffman’s character in the movie Rain Man. Although many people believe he was autistic, he was a non-autistic savant, with exceptional mental abilities. His memory and capacity to perform certain mathematical calculations were nothing short of astounding. An MRI exam showed that Peek was lacking the corpus callosum, the part of the brain that connects the two hemispheres. It is thought that this brain abnormality contributed to his special abilities. Despite his uniqueness, his brain was not his biggest contribution to psychology. Ironically, the misconception of his autism helped to raise the profile of the little-known disorder into the mainstream.

David Reimer (John/Joan Case)

David Reimer was born a boy but his penis was castrated by accident during a circumcision procedure. Instead of trying to reconstruct his penis, it was recommended by a doctor, John Money, that he be brought up as a girl. Money believed that gender was a choice and could override any natural inclination. As a result, when he was 17 months old, David underwent surgery and became Brenda Reimer. Despite Money’s assurances that the process was a success, David’s parents could tell that he was not happy as a girl. Eventually, when he was 14, his parents told him he was born a boy and David elected to reverse the gender reassignment process to become male again. David’s story has become a cautionary tale. He committed suicide at age 38. He spent much of his life campaigning against gender assignment surgery being forced upon children without consent. His case is one of the most high profile indications that gender identity is not a choice, attempting to undo the damage caused by John Money’s false assertions.

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A case study is a research method that extensively explores a particular subject, situation, or individual through in-depth analysis, often to gain insights into real-world phenomena or complex issues. It involves the comprehensive examination of multiple data sources, such as interviews, observations, documents, and artifacts, to provide a rich and holistic understanding of the subject under investigation.

Case studies are conducted to:

Investigate a specific problem, event, or phenomenon
Explore unique or atypical situations
Examine the complexities and intricacies of a subject in its natural context
Develop theories, propositions, or hypotheses for further research
Gain practical insights for decision-making or problem-solving

A typical case study consists of the following components:

Introduction: Provides a brief background and context for the study, including the purpose and research questions.
Case Description: Describes the subject of the case study, including its relevant characteristics, settings, and participants.
Data Collection: Details the methods used to gather data, such as interviews, observations, surveys, or document analysis.
Data Analysis: Explains the techniques employed to analyze the collected data and derive meaningful insights.
Findings: Presents the key discoveries and outcomes of the case study in a logical and organized manner.
Discussion: Interprets the findings, relates them to existing theories or frameworks, discusses their implications, and addresses any limitations.
Conclusion: Summarizes the main findings, highlights the significance of the research, and suggests potential avenues for future investigations.

Case studies offer several benefits, including:

Providing a deep understanding of complex and context-dependent phenomena
Generating detailed and rich qualitative data
Allowing researchers to explore multiple perspectives and factors influencing the subject
Offering practical insights for professionals and practitioners
Allowing for the examination of rare or unique occurrences that cannot be replicated in experimental settings

Psychology Case Study Examples

For those experiencing suicidal thoughts, please contact the 988 Suicide & Crisis Lifeline at 988
For those experiencing abuse, please contact the Domestic Violence Hotline at 1-800-799-SAFE (7233)
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Experiments are often used to help researchers understand how the human mind works. There have been many famous examples in psychology over the years. Some have shown how phenomena like memory and personality work. Others have been disproven over time. Understanding the study design, data, content, and analytical approach of case studies is important to verifying the validity of each study.

In considering case studies, researchers continuously test and reevaluate the conclusions made by past psychologists to continue offering the most up-to-date and effective care to modern clients. Prospective case studies are continually being developed based on previous findings and multiple case studies done in one area can lend credence to the findings. Learning about the famous psychology case studies can help you understand how research continues to shape what psychologists know about the human experience and mind.

Examples of the most famous case study in psychology

Hundreds of thousands of case studies have been done in psychology, and narrowing a list of the most ground-breaking studies can be challenging. However, the following seven case studies present findings that have defied expectations, achieved positive outcomes for humanity, and launched further research into existing knowledge gaps within the niche.

Phineas Gage

The case of Phineas Gage is perhaps the most cited study in psychology. This famous case study showed how different areas of the brain affect personality and cognitive ability. While working as a construction foreman on a railroad, Phineas Gage was involved in an accident in which a rod was pushed through his cheek and brain. He survived, but because of the accident, both his personality and his ability to learn new skills were affected.

Although the case is frequently cited and referenced in psychology, relatively little information about Gage's life before and after the accident is known. Researchers have discovered that the last two decades of his life were spent in his original job, which may have been unlikely to have been possible if the extent of his injuries were as severe as initially believed. Still, his case was a starting point for psychology research on how memory and personality work in the brain, and it is a seminal study for that reason.

Genie the "feral child"

Although an outdated term, "feral children" referred to children raised without human interaction, often due to abuse or neglect. One famous case study of a neglected child was done with a child known as Genie. She was raised in a single bedroom with little human interaction. She never gained the cognitive ability of an average adult, even though she was found at age 13. Later in life, she regressed and stopped speaking altogether. Her case has been studied extensively by psychologists who want to understand how enculturation affects cognitive development. It's one of many cognitive psychology examples that have had an impact on this field.

Henry Molaison

The case study of Henry Molaison has helped psychologists understand memory. It is one of the most famous case studies in neuroscience. Henry Molaison was in a childhood accident that left him with debilitating seizures. Doctors could stop the seizures by removing slivers of his brain's hippocampus, though they did not fully understand what they were doing at the time. As a result, scientists learned how important the hippocampus is to forming long-term memories. After the surgery, Molaison could no longer form long-term memories, and his short-term memory was brief. The case study started further research into memory and the brain.

Jill Price had one of a few documented cases of hyperthymesia, a term for an overactive memory that allowed her to remember such mundane things as what she had for dinner on an average day in August 20th years previously. Her case study was used as a jumping-off point to research how memory works and why some people have exceptional memories.

However, through more research, it was discovered that her overall memory was not exceptional. Rather, she only remembered details of her own life. She was diagnosed with obsessive-compulsive disorder (OCD), with memories being part of her obsession. This case study is still relevant because it has helped modern psychologists understand how mental illness affects memory.

In the John/Joan case study , a reputable sexologist tested his theory that nurture, not nature, determined gender. The case study has been cited extensively and laid the groundwork for other research into gender identity. However, the case study was not legitimate. In this study, Dr. John Money performed surgery on an infant whose genitals were damaged during circumcision.

The boy was raised as a girl; however, he never identified as female and eventually underwent gender-affirming surgery as an adult. Because Dr. Money didn't follow up with the patient appropriately and did not report adverse findings, the case study is still often cited as successful.

Anna O. was the pseudonym given to a German woman who was one of the first to undergo psychoanalysis. Her case inspired many of the theories of Freud and other prominent psychologists of the time. It was determined at the time that Anna's symptoms of depression were eliminated through talk therapy. More recently, it has been suggested that Anna O. had another illness, such as epilepsy, from which she may have recovered during the therapy. This case study is still cited as a reason psychologists believe that psychotherapy, or talk therapy, can be helpful to many patients.

Victor the "wild boy" of Aveyron

Another study done on a child that had grown up without parents was done with a boy named "Victor" who had been found wandering in the wilderness and was thought to have been living alone for years. The boy could not speak, use the bathroom, or connect with others. However, through the study of his condition, he was able to learn bathroom habits, how to dress, writing, and primary language. Psychologists today speculate that he may have been autistic.

Ethical concerns for doing a case study

When case studies are flawed through not having enough information or having the wrong information, they can be harmful. Valuable research hours and other resources can be wasted while theories are used for inappropriate treatment. Case studies can therefore cause as much harm as benefit, and psychologists are often careful about how and when they are used.

Those who are not psychologists and are interacting with studies can also practice caution. Psychologists and doctors often disagree on how case studies should be applied. In addition, people without education in psychology may struggle to know whether a case study is built on a faulty premise or misinformation. It can also be possible to generalize case studies to situations they do not apply. If you think a case study might apply to your case or that of a loved one, consider asking a therapist for guidance.

Case studies are descriptions of real people. The individuals in the studies are studied intensively and often written about in medical journals and textbooks. While some clients may be comfortable being studied for science, others may not have consented due to the inability or lack of consent laws at the time. In addition, some subjects may not have been treated with dignity and respect.

When considering case study content and findings from psychology, it can be helpful to think of the cases as stories of real individuals. When you strip away the science and look at the case as a whole person in a unique situation, you may get more out of the study than if you look at it as research that proves a theory.

Therapeutic implications of a case study

Case examples are sometimes used in therapy to determine the best course of treatment. If a typical case study from psychology aligns with your situation, your therapist may use the treatment methods outlined in the study. Psychiatrists and other mental health professionals also use case examples to understand mental illness and its treatment.

Researchers have reviewed the role of case studies in counseling and psychotherapy. In one study, the authors discussed how reading case studies benefits therapists, providing a conceptual guide for clinical work and an understanding of the theory behind the practice. They also stressed the importance of teaching psychotherapy trainees to do better case study research. They encouraged practitioners to publish more case studies documenting the methods they use in their practice.

How a case study is used in counseling

If you want to meet with a psychologist, counseling may benefit you. Therapists often use theories behind popular case studies and can discuss their implications with you. In addition, you may be able to participate in case studies in your area, as psychologists and psychiatrists often perform clinical trials to understand treatments on a deeper level.

Online therapy can also be beneficial if you cannot find a therapist in your area. Through a platform like BetterHelp, you can get matched with a provider meeting your needs and choose between phone, video, or live chat sessions. When experiencing symptoms of a mental health condition, it can sometimes be hard to leave home for therapy. You can use many online therapy platforms from the comfort and safe space of your own home.

Therapy is a personal experience; not everyone will go into it seeking the same outcomes. Keeping this in mind may ensure you get the most out of online therapy, regardless of your specific goals. If you're interested in learning more about the effectiveness of online therapy, you can look into various clinical studies that have shown it can be as effective, if not more effective, than in-person options.

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5 Fascinating Clinical Psychology Case Studies

If you pursue work as a clinical psychologist, you’ll be able to make a major difference in people’s lives. In most cases, these psychologists are the first practitioners to recognize and diagnose mental health disorders. Many clinical psychologists also practice “talk therapy,” where they talk through issues with patients and help them develop better coping mechanisms. But what’s it really like to work in clinical psychology? Take a look at each case study psychology below to get an idea.

A Day in the Life of a Clinical Psychologist

As you might be able to tell from the name, a clinical psychologist applies psychology knowledge in a clinical setting. Using their knowledge of different mental disorders and how they present, clinical psychologists help patients identify and then treat mental health disorders. They also can help patients work through psychological issues even if no disorder is present.

However, it’s important to note that clinical psychologists do not prescribe medication. Often, once a clinical psychologist makes a diagnosis that requires medication, they will refer a patient to a psychiatrist. The psychiatrist handles the medication, but a clinical psychologist will often help a patient manage some of their symptoms through some form of talk therapy. In the case of some complex disorders, a psychologist may be able to coordinate with the patient’s psychiatrist in order to ensure the best care possible.

Some people believe that talk therapy is just a patient talking while the psychologist listens. However, this couldn’t be further from the truth. Clinical psychologists are tasked with assessing each patient and developing an individualized treatment plan. Often, that plan includes delving into the patient’s issues and helping them understand their roots. From there, the psychologist can help the patient develop healthier coping mechanisms for dealing with those issues.

Usually, clinical psychologists primarily work with patients on an individual basis. They do this either as part of a group practice or in private practice. Sometimes, they may teach classes, although this usually isn’t the bulk of their workload. Clinical psychologists often will conduct and publish research that sometimes involves case studies of patients.

Becoming a Clinical Psychologist

To become a clinical psychologist, you will need to pursue a doctoral degree. Most clinical psychologists have either a Ph.D. or a PsyD, though the Ph.D. is more common in the field and will usually afford you more career opportunities. PsyD programs tend to accept more applicants than Ph.D. programs. A PsyD degree places more focus on applying concepts of psychology to the clinical setting. A Ph.D. program certainly applies concepts of psychology as well, but it has much more of a focus on research than PsyD programs do.

Regardless of which program you choose, becoming a clinical psychologist involves a considerable time commitment. The first step is obtaining a four-year bachelor’s degree. From there, some candidates pursue a master’s degree, while others go straight into a Ph.D. training program.

Most PsyD programs take four to five years to complete, while most Ph.D. programs take between five and seven years. In the case of a Ph.D., graduates will need to complete a residency program much like medical doctors. Residency programs usually last about one to three years. During that time, new psychologists are overseen by an experienced psychologist. Upon completion of the residency, a clinical psychologist must also take and pass a licensure exam in order to practice in their state. Most states will also allow you to obtain different certifications in specialized areas.

As you can see, the decision to become a clinical psychologist isn’t one to make on a whim. Usually, though, you’ll be able to get a sense of the field from the undergraduate courses you take early on.

What’s a Case Study?

In a moment, we’ll take you through five interesting case studies from real clinical psychologists. But what exactly is a case study?

Simply put, a case study is a very detailed account of an individual patient’s case. (The case studies below are abbreviated versions of case studies.) Psychologists usually keep notes on all patients, but a case study is much more formal. Each study is an in-depth exploration of a patient’s disorder, and it usually contains information on the patient’s personal history as well as how their disorder presents. Most case studies also have information on treatments that have worked (and those that have not worked) for a given patient.

So why is a single case study valuable, especially when most studies survey larger groups of patients? For one, case studies are extremely valuable in the case of rare conditions. With very rare mental health disorders, it can be near-impossible to find larger studies. With case studies, it’s still possible to get an accurate picture of the disorder and what it looks like in different patients.

Case studies can also help future clinical psychologists to sharpen their diagnostic skills. In a broader study, you might learn about some of the common symptoms of a diagnose. But individual patients have their own quirks, and the same disorder can look different from patient to patient. Reading case studies can be a great way to see how different mental health issues can look in different people.

Lastly, case studies can be useful in supporting or refuting existing research. In some cases, they may point to issues that need to be researched further.

To really start to get a sense of what it’s like to be a clinical psychologist, check out these five interesting case studies reported by actual clinicians:

Wishing for Death

Even if you seem to have a promising future, it’s still possible to deal with severe depression. This is what happened to Jessica, a woman who had successfully completed medical school and obtained a residency at a large hospital. In Jessica’s case, her mental state declined seemingly overnight; she awoke one day feeling especially sad. But instead of lifting, that sadness continued and even worsened.

As is the case with many people with depression, Jessica lost interest in things she had previously enjoyed. She stopped having sex with her husband and even found interacting with her children to be a chore. She even found that her job was in jeopardy, as she stopped caring about work and began missing shifts.

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Often, people suffering from severe depression will consider suicide. Some will go as far as making and going through with suicide plans. Jessica wasn’t considering or fantasizing about suicide. But she did begin to wish she was dead, and these thoughts slowly became all-consuming. Despite feeling drained from her low mood, Jessica still had trouble sleeping at night. This is when her thoughts of death were at their worst.

Jessica continued to insist that nothing was wrong. But her coworkers at the hospital saw that something was off. Jessica wasn’t being lazy or slacking for no reason; it was clear her mental health was suffering. Her colleagues were able to convince Jessica to see a mental health professional. She was diagnosed with major depressive disorder, a mental health disorder that causes severe and persistent sadness and loss of interest.

College Struggles

Many mental health issues present themselves when people are college-aged, and this is what happened to Gerry, a 21-year-old college student who got good grades. Gerry got along well with his friends and roommates until he started having trouble sleeping. At night, his thoughts began to race and felt as though they were spinning out of control.

But that wasn’t all. Gerry was usually a kind and mild-mannered person, but he began calling his friends at all hours of the night, becoming angry if they didn’t give him the attention he wanted. Within a few days, Gerry started to believe his roommates were spying on him. He told them as much. Instead of writing it off as simply a quirk, his friends became very concerned. They talked to Gerry and explained the strange changes they’d been seeing in his behavior. Ultimately, they were able to convince Gerry to seek mental health help.

After talking with a clinician, Gerry was ultimately diagnosed with bipolar disorder. It can be an intimidating diagnosis to receive, but Gerry was referred to a psychiatrist who could work with him to find the right medication. The combination of medication and cognitive-behavioral therapy helped him to return back to his normal self.

A Case of Obsession

Plenty of people are fastidious about certain things, but one salesman took it a little too far. The salesman was having trouble leaving his house on time to get to work because he had an overwhelming and obsessive need to follow a set of rituals. Many of them were about securing the home. It started with double-checking and triple-checking that doors were locked.

The salesman also became incredibly worried about the electrical wiring in the home. He began to obsess over whether it would cause an electrical fire. If he didn’t complete the various rituals he felt compelled to do, the man believed he would experience bad luck.

Once he saw a psychologist, the man was diagnosed with obsessive-compulsive disorder. Since this disorder involves holding onto irrational beliefs, cognitive-behavioral therapy is essential. The man’s psychologist worked with him through therapy and helped him to manage and then overcome his obsessive thoughts. Ultimately, the salesman was able to get back to a much more normal life.

Unexpected Panic

Panic disorders and anxiety disorders can seem to poison your life. That’s what it felt like for one forest ranger. Up until his mid-30s, he didn’t suffer from more than normal anxiety. But one day, while standing in line at the grocery store, he suddenly felt an overwhelming wave of panic. His heart rate went up and he started sweating. The panic attack was so bad that the forest ranger thought he would pass out, so he abandoned his shopping cart and returned to the car.

Naturally, the forest ranger didn’t want the same thing to happen again. Because that first panic attack had occurred in a grocery store, he began avoiding supermarkets. But that didn’t help for long. He began to experience intense anxiety in many areas of his life. His symptoms were so severe that his family life began to suffer, so he sought help.

The forest ranger saw a psychologist and was diagnosed with an anxiety disorder. Though some people with anxiety disorders benefit from medication, the forest ranger was able to work through and manage his symptoms through cognitive behavioral therapy.

Bizarre Behaviors

Most severe mental disorders don’t start in childhood. When they do appear, these disorders often involve someone who previously seemed outwardly normal suddenly exhibiting strange behaviors. This is what happened to a 21-year-old business student. He suddenly began becoming agitated for no ostensible reason. During his bouts of agitation, other people heard him whispering angrily to himself.

The young man’s friends and family were very concerned, but they were unable to reach him by phone. He explained that aliens had placed a chip in his brain and that it would explode if he answered his phone.

Sometimes, symptoms like those the young man had can be caused or made worse by abusing alcohol or drugs. However, the young man didn’t abuse either. A family history of mental illness can sometimes be a risk factor, and the man did say he had an aunt who had been treated at psychiatric hospitals several times.

Thanks in part to the concern of his friends and family, the young man talked to a psychologist and gave a detailed account of his symptoms. He was diagnosed with paranoid schizophrenia. This is a difficult diagnosis to receive. But as the young man found, schizophrenia is possible to manage with good care. The young man’s psychologist was able to continue therapy, and he was also referred to a psychiatrist for help with medication. Often, for those diagnosed with paranoid schizophrenia, a combination of therapy and the right medications can effectively manage symptoms.

Each case study psychology above is just a short introduction to the types of cases you may encounter working as a clinical psychologist. And when working in the field, you’ll be asked to write your own case studies, too. While in school, you’ll learn the correct way to write case studies and how sharing case studies with other psychologists can help the field grow as a whole. Hopefully, these case studies have also shed some light on one of the best parts of working as a clinical psychologist — you can help people confront and work through mental health challenges and work toward healthier, happier lives.

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What Is a Case Study in Psychology?

Categories Research Methods

A case study is a research method used in psychology to investigate a particular individual, group, or situation in depth . It involves a detailed analysis of the subject, gathering information from various sources such as interviews, observations, and documents.

In a case study, researchers aim to understand the complexities and nuances of the subject under investigation. They explore the individual’s thoughts, feelings, behaviors, and experiences to gain insights into specific psychological phenomena.

This type of research can provide great detail regarding a particular case, allowing researchers to examine rare or unique situations that may not be easily replicated in a laboratory setting. They offer a holistic view of the subject, considering various factors influencing their behavior or mental processes.

By examining individual cases, researchers can generate hypotheses, develop theories, and contribute to the existing body of knowledge in psychology. Case studies are often utilized in clinical psychology, where they can provide valuable insights into the diagnosis, treatment, and outcomes of specific psychological disorders.

Case studies offer a comprehensive and in-depth understanding of complex psychological phenomena, providing researchers with valuable information to inform theory, practice, and future research.

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Examples of Case Studies in Psychology

Case studies in psychology provide real-life examples that illustrate psychological concepts and theories. They offer a detailed analysis of specific individuals, groups, or situations, allowing researchers to understand psychological phenomena better. Here are a few examples of case studies in psychology:

Phineas Gage

This famous case study explores the effects of a traumatic brain injury on personality and behavior. A railroad construction worker, Phineas Gage survived a severe brain injury that dramatically changed his personality.

This case study helped researchers understand the role of the frontal lobe in personality and social behavior.

Little Albert

Conducted by behaviorist John B. Watson, the Little Albert case study aimed to demonstrate classical conditioning. In this study, a young boy named Albert was conditioned to fear a white rat by pairing it with a loud noise.

This case study provided insights into the process of fear conditioning and the impact of early experiences on behavior.

Genie’s case study focused on a girl who experienced extreme social isolation and deprivation during her childhood. This study shed light on the critical period for language development and the effects of severe neglect on cognitive and social functioning.

These case studies highlight the value of in-depth analysis and provide researchers with valuable insights into various psychological phenomena. By examining specific cases, psychologists can uncover unique aspects of human behavior and contribute to the field’s knowledge and understanding.

Types of Case Studies in Psychology

Psychology case studies come in various forms, each serving a specific purpose in research and analysis. Understanding the different types of case studies can help researchers choose the most appropriate approach.

Descriptive Case Studies

These studies aim to describe a particular individual, group, or situation. Researchers use descriptive case studies to explore and document specific characteristics, behaviors, or experiences.

For example, a descriptive case study may examine the life and experiences of a person with a rare psychological disorder.

Exploratory Case Studies

Exploratory case studies are conducted when there is limited existing knowledge or understanding of a particular phenomenon. Researchers use these studies to gather preliminary information and generate hypotheses for further investigation.

Exploratory case studies often involve in-depth interviews, observations, and analysis of existing data.

Explanatory Case Studies

These studies aim to explain the causal relationship between variables or events. Researchers use these studies to understand why certain outcomes occur and to identify the underlying mechanisms or processes.

Explanatory case studies often involve comparing multiple cases to identify common patterns or factors.

Instrumental Case Studies

Instrumental case studies focus on using a particular case to gain insights into a broader issue or theory. Researchers select cases that are representative or critical in understanding the phenomenon of interest.

Instrumental case studies help researchers develop or refine theories and contribute to the general knowledge in the field.

By utilizing different types of case studies, psychologists can explore various aspects of human behavior and gain a deeper understanding of psychological phenomena. Each type of case study offers unique advantages and contributes to the overall body of knowledge in psychology.

How to Collect Data for a Case Study

There are a variety of ways that researchers gather the data they need for a case study. Some sources include:

Directly observing the subject
Collecting information from archival records
Conducting interviews
Examining artifacts related to the subject
Examining documents that provide information about the subject

The way that this information is collected depends on the nature of the study itself

Prospective Research

In a prospective study, researchers observe the individual or group in question. These observations typically occur over a period of time and may be used to track the progress or progression of a phenomenon or treatment.

Retrospective Research

A retrospective case study involves looking back on a phenomenon. Researchers typically look at the outcome and then gather data to help them understand how the individual or group reached that point.

Benefits of a Case Study

Case studies offer several benefits in the field of psychology. They provide researchers with a unique opportunity to delve deep into specific individuals, groups, or situations, allowing for a comprehensive understanding of complex phenomena.

Case studies offer valuable insights that can inform theory development and practical applications by examining real-life examples.

Complex Data

One of the key benefits of case studies is their ability to provide complex and detailed data. Researchers can gather in-depth information through various methods such as interviews, observations, and analysis of existing records.

This depth of data allows for a thorough exploration of the factors influencing behavior and the underlying mechanisms at play.

Unique Data

Additionally, case studies allow researchers to study rare or unique cases that may not be easily replicated in experimental settings. This enables the examination of phenomena that are difficult to study through other psychology research methods .

By focusing on specific cases, researchers can uncover patterns, identify causal relationships, and generate hypotheses for further investigation.

General Knowledge

Case studies can also contribute to the general knowledge of psychology by providing real-world examples that can be used to support or challenge existing theories. They offer a bridge between theory and practice, allowing researchers to apply theoretical concepts to real-life situations and vice versa.

Case studies offer a range of benefits in psychology, including providing rich and detailed data, studying unique cases, and contributing to theory development. These benefits make case studies valuable in understanding human behavior and psychological phenomena.

Limitations of a Case Study

While case studies offer numerous benefits in the field of psychology, they also have certain limitations that researchers need to consider. Understanding these limitations is crucial for interpreting the findings and generalizing the results.

Lack of Generalizability

One limitation of case studies is the issue of generalizability. Since case studies focus on specific individuals, groups, and situations, applying the findings to a larger population can be challenging. The unique characteristics and circumstances of the case may not be representative of the broader population, making it difficult to draw universal conclusions.

Researcher bias is another possible limitation. The researcher’s subjective interpretation and personal beliefs can influence the data collection, analysis, and interpretation process. This bias can affect the objectivity and reliability of the findings, raising questions about the study’s validity.

Case studies are often time-consuming and resource-intensive. They require extensive data collection, analysis, and interpretation, which can be lengthy. This can limit the number of cases that can be studied and may result in a smaller sample size, reducing the study’s statistical power.

Case studies are retrospective in nature, relying on past events and experiences. This reliance on memory and self-reporting can introduce recall bias and inaccuracies in the data. Participants may forget or misinterpret certain details, leading to incomplete or unreliable information.

Despite these limitations, case studies remain a valuable research tool in psychology. By acknowledging and addressing these limitations, researchers can enhance the validity and reliability of their findings, contributing to a more comprehensive understanding of human behavior and psychological phenomena.

While case studies have limitations, they remain valuable when researchers acknowledge and address these concerns, leading to more reliable and valid findings in psychology.

Alpi, K. M., & Evans, J. J. (2019). Distinguishing case study as a research method from case reports as a publication type. Journal of the Medical Library Association , 107(1). https://doi.org/10.5195/jmla.2019.615

Crowe, S., Cresswell, K., Robertson, A., Huby, G., Avery, A., & Sheikh, A. (2011). The case study approach. BMC Medical Research Methodology , 11(1), 100. https://doi.org/10.1186/1471-2288-11-100

Paparini, S., Green, J., Papoutsi, C., Murdoch, J., Petticrew, M., Greenhalgh, T., Hanckel, B., & Shaw, S. (2020). Case study research for better evaluations of complex interventions: Rationale and challenges. BMC Medicine , 18(1), 301. https://doi.org/10.1186/s12916-020-01777-6

Willemsen, J. (2023). What is preventing psychotherapy case studies from having a greater impact on evidence-based practice, and how to address the challenges? Frontiers in Psychiatry , 13, 1101090. https://doi.org/10.3389/fpsyt.2022.1101090

Yin, Robert K. Case Study Research and Applications: Design and Methods . United States, SAGE Publications, 2017.

Understanding the Importance of Case Studies in Psychology

Case studies play a crucial role in the field of psychology, providing researchers with valuable insights into human behavior and mental processes. From providing real-life examples to generating hypotheses and analyzing rare phenomena, case studies offer a deep dive into the complexities of the human mind.

But how are these studies conducted, and what are the different types? In this article, we will explore the significance of case studies in psychology, their methodology, and the various types that researchers utilize in their work.

Case studies provide real-life examples to support theories and concepts in psychology.
They allow for in-depth analysis of individual experiences, thoughts, and behaviors.
Case studies help generate hypotheses and provide insight into rare phenomena, making them valuable in research.
1 What Are Case Studies in Psychology?
2.1 Provide Real-life Examples
2.2 Allow for In-depth Analysis
2.3 Help in Generating Hypotheses
2.4 Provide Insight into Rare Phenomena
2.5 Can be Used in Ethically Sensitive Situations
3.1 Selecting a Case
3.2 Collecting Data
3.3 Analyzing Data
3.4 Reporting Findings
4.1 Descriptive Case Studies
4.2 Exploratory Case Studies
4.3 Explanatory Case Studies
4.4 Collective Case Studies
4.5 Single-Case Studies
4.6 Multiple-Case Studies
5.1 What are case studies in psychology?
5.2 Why are case studies important in psychology?
5.3 How do case studies help in understanding psychology?
5.4 What are the benefits of using case studies in psychology?
5.5 Can case studies be used to generalize findings?
5.6 What are the limitations of using case studies in psychology?

What Are Case Studies in Psychology?

Case studies in psychology refer to detailed investigations of a single individual, group, or event to explore underlying principles and behaviors.

These studies are conducted to gain a deeper understanding of specific psychological phenomena and provide valuable insights into the complexities of human behavior. By focusing on a particular subject, researchers are able to examine real-world scenarios in depth, uncovering unique aspects that may not be captured through larger-scale studies.

The purpose of case studies in psychology is not only to analyze specific cases but also to draw broader conclusions and develop theories that can contribute to the advancement of psychological knowledge. They serve as a crucial tool in the research process, allowing researchers to examine complex interactions and variables within a controlled framework.

Why Are Case Studies Important in Psychology?

Case studies hold significant importance in psychology due to their ability to provide detailed insights into individual behavior and psychological phenomena.

Through case studies , psychologists can delve deep into the unique circumstances surrounding a particular person or group, shedding light on complex psychological processes that may not be easily observable in large-scale research.

These in-depth examinations enable researchers to explore rare phenomena that may not be commonly encountered in everyday life, offering a valuable opportunity to study and understand the complexities of human behavior.

Case studies play a crucial role in generating hypotheses for further investigation, laying the groundwork for more extensive research studies.

Provide Real-life Examples

Case studies in psychology offer real-life examples that allow researchers and practitioners to apply theoretical concepts to actual scenarios, a practice famously exemplified by Sigmund Freud in his clinical work.

Freud’s use of case studies, such as the famous ‘Anna O.’ case, revolutionized how psychologists understand and treat mental disorders.

These in-depth investigations delve into an individual’s thoughts, emotions, and behaviors, providing rich data for analyzing psychological principles in action.

By examining specific cases, professionals can gain insights into varying mental health conditions, like schizophrenia, PTSD, or phobias.

Allow for In-depth Analysis

Case studies enable researchers to conduct in-depth analyses of complex psychological phenomena, facilitating detailed data collection and rigorous analysis methods.

By delving deeply into individual cases, researchers can gather rich, detailed information that may not be accessible through other research methods.

Data collection techniques such as interviews, observations, and archival research are commonly employed to gather comprehensive data.

Analytical approaches such as thematic analysis, content analysis, and grounded theory are then utilized to interpret the gathered information and derive meaningful insights.

Through this intricate process, researchers can uncover nuanced patterns, behaviors, and underlying psychological dynamics, leading to qualitative research that offers valuable insights into human behavior and cognition.

Help in Generating Hypotheses

Case studies play a key role in generating hypotheses within psychology by providing rich qualitative data that can inform diagnostic processes and research directions.

These in-depth analyses of individual cases allow researchers to delve into specific behaviors, experiences, and psychological phenomena, offering detailed insights that can lead to the formulation of new theories or test existing hypotheses.

By examining unique cases, psychologists can identify patterns, outliers, and uncommon manifestations that expand their understanding of mental health conditions and human behavior.
The flexibility of case study research methods enables researchers to adapt their approach to each unique case, accommodating the complex and intricate nature of psychological disorders.

This nuanced exploration of individual experiences and symptoms contributes significantly to the development of accurate diagnostic criteria and effective treatment strategies, enhancing the overall quality of psychological research and clinical practice.

Provide Insight into Rare Phenomena

Case studies offer valuable insights into rare psychological phenomena that may not be easily captured through traditional research methods, such as the application of cognitive behavioral therapy in exceptional cases.

These in-depth examinations of individual cases allow researchers to delve deeper into unique psychological abnormalities that may defy standard treatment strategies. For instance, rare cases of dissociative identity disorder have shown remarkable progress with the implementation of cognitive behavioral therapy , shedding light on the potential effectiveness of this unconventional approach. Through detailed narratives of patient experiences and therapeutic interventions, case studies provide a rich source of information for psychologists and therapists alike, offering a nuanced understanding of complex psychological conditions.

Can be Used in Ethically Sensitive Situations

Case studies are instrumental in addressing ethically sensitive situations within psychology, ensuring the competence and adherence to ethical guidelines in clinical practice and research.

In the realm of clinical settings, it is imperative for psychologists to uphold the highest ethical standards when dealing with delicate ethical dilemmas that may arise. By diving into case studies, professionals can gain valuable insights into the complexities of ethical decision-making processes. For a better understanding of the importance of case studies in psychology, you can refer to this external link .

The application of ethical principles plays a fundamental role in safeguarding the welfare of clients and maintaining trust in the therapeutic relationship. Ethical considerations serve as the moral compass guiding psychologists in navigating intricate scenarios that may challenge their professional integrity.

How Are Case Studies Conducted in Psychology?

Case studies in psychology are conducted through a systematic process involving the selection of a case, data collection, thorough analysis, and comprehensive reporting of findings.

Regarding selecting a case for a psychological study, researchers typically look for rich and detailed examples that can provide valuable insights into specific phenomena or conditions. This selection process often involves careful consideration of factors such as uniqueness, relevance to the research question, and the availability of information.

Data collection methods in psychological case studies can vary, ranging from structured interviews and observations to psychological tests and document analysis. These methods aim to gather comprehensive and reliable data that can offer a deep understanding of the case under investigation.

Once the data is collected, researchers employ various analytical approaches, such as thematic analysis, content analysis, or grounded theory, to identify patterns, themes, and relationships within the data. These analytical techniques help in uncovering significant findings and drawing meaningful conclusions.

Selecting a Case

The initial step in conducting a case study in psychology involves selecting an individual case with a compelling personal history that aligns with the research objectives.

It is paramount to consider the individual’s background, experiences, and unique attributes when choosing a case.

Assessing the personal history of the case subject can provide valuable insights into potential factors contributing to their current situation.
Ensuring that the research objectives are in harmony with the characteristics of the chosen case helps maintain relevance and coherence in the study.
Each case has its own complexities, challenges, and dynamics that can offer rich material for analysis and interpretation.

Therefore, a thorough evaluation of the personal history, alignment with research goals, and distinct qualities of the case individual are crucial steps in the selection process for a psychological case study.

Collecting Data

Data collection in psychological case studies involves various methods such as observational studies , archival record reviews, and direct interviews to gather comprehensive information about the case.

Observational studies, one of the primary data collection techniques in psychological case studies, involve the systematic observation of individuals in their natural environment to understand their behavior and interactions. Researchers closely analyze and document these observations to gain insights into the case under study.

Archival record reviews play a crucial role in accessing historical information related to the case. Researchers sift through records such as medical reports, school transcripts, or legal documents to gather valuable data that provides context and background for the case.

Interview methods offer researchers the opportunity to delve deeper into the case by directly interacting with the individuals involved. Through structured or semi-structured interviews, researchers can gather detailed accounts, emotions, and perspectives, enriching the understanding of the case.

Analyzing Data

Data analysis in psychological case studies involves rigorous examination methods such as interpretative phenomenological analysis to derive meaningful insights from collected information.

This approach aims to uncover underlying themes and patterns within the data, allowing researchers to delve deep into the subjective experiences of individuals studied. Through thematic coding practices, researchers categorize and organize data based on recurring themes or concepts, facilitating a systematic analysis process. By employing analytical rigor and attention to detail, researchers can extract valuable insights that contribute to a more profound understanding of the psychological phenomena under investigation.

Reporting Findings

Reporting findings in psychological case studies follows established guidelines such as the APA format, ensuring clear and concise documentation of the research outcomes and clinical observations.

Following the APA format standards is crucial in the field of psychology as it provides a structured framework for presenting research data and insights. By adhering to these guidelines, researchers can enhance the credibility and reproducibility of their findings, fostering transparency in the scientific community.

The meticulous reporting of results not only aids in the replication of studies but also facilitates the integration of new knowledge into existing theories and practices. Maintaining consistency in clinical documentation allows for effective communication among professionals, promoting collaborative efforts in advancing psychological research.

What Are the Different Types of Case Studies in Psychology?

In psychology, various types of case studies exist, including descriptive case studies that aim to provide detailed accounts and explanatory case studies that focus on understanding underlying psychological mechanisms.

Descriptive case studies often involve extensive qualitative data collection through methods such as interviews, observations, and document analysis to present a rich narrative of an individual’s experiences or behaviors.

On the other hand, explanatory case studies delve deeper into the causal relationships between variables, seeking to uncover the reasons behind certain psychological phenomena or behaviors.

While descriptive studies offer a comprehensive portrayal, explanatory studies strive to unravel the ‘why’ and ‘how’ aspects, shedding light on the mechanisms at play in complex psychological processes.

Descriptive Case Studies

Descriptive case studies in psychology involve detailed observations and analyses of individual cases to provide comprehensive insights into behavior and psychological processes.

Observational research methods play a crucial role in conducting descriptive case studies, allowing researchers to directly observe and document the behaviors and responses of the individuals under study. These methods often involve naturalistic observations in real-life settings, providing rich and nuanced data for analysis. Researchers often employ thematic coding practices to categorize and analyze the qualitative data collected during these observations, identifying recurring themes and patterns within the behavior of the case subjects.

Exploratory Case Studies

Exploratory case studies in psychology aim to delve into new areas of research, employing thematic coding to identify patterns and themes within the collected data.

Thematic coding, a crucial methodology in these studies, involves categorizing data based on recurring themes and concepts that emerge during analysis. This process allows researchers to uncover hidden connections and gain deeper insight into the phenomena under investigation.

Longitudinal studies, often utilized in exploratory research, provide a temporal perspective by tracking changes and developments over an extended period. This longitudinal approach enables researchers to observe how patterns evolve over time, offering a more comprehensive understanding of complex psychological processes.

Explanatory Case Studies

Explanatory case studies in psychology focus on understanding the underlying psychological phenomena through interpretative phenomenological analysis, uncovering the complexities of individual behavior.

By utilizing interpretative phenomenological analysis methods, researchers can delve deep into the subjective experiences and perceptions of participants, providing rich insights into the intricate workings of the human mind. These case studies serve as valuable tools for theory testing approaches, allowing psychologists to explore the applicability and validity of existing theories in real-world contexts.

The theoretical interpretations derived from these studies help in advancing our understanding of psychological processes, shedding light on factors that influence behavior, emotions, and cognition. Through detailed qualitative analysis, researchers can capture the nuances and subtleties of individual differences and diverse psychological phenomena, contributing to the broader field of psychology.

Collective Case Studies

Collective case studies in psychology involve the examination of multiple cases or a group of individuals over an extended period, often utilizing longitudinal study designs to capture developmental changes.

The primary goal of collective case studies is to provide a comprehensive understanding of specific phenomena by observing patterns across different cases. By analyzing these cases simultaneously, researchers can gain insights into shared experiences, unique outcomes, and variations that might occur within the group.

Longitudinal study frameworks in collective case studies allow researchers to track changes over time, providing valuable data on long-term behavioral patterns and psychological development.

Cross-sectional comparisons, on the other hand, enable researchers to compare different cases at a specific point in time, helping identify similarities, differences, and potential factors influencing group dynamics.

Single-Case Studies

Single-case studies in psychology focus on individual cases, allowing for a detailed examination of unique behaviors and psychological patterns while addressing potential researcher biases.

By diving into a single individual’s experience, researchers can gain in-depth insights into specific behaviors and responses. This approach enables a focused analysis of the complexities that may not be observable in larger samples, leading to a nuanced understanding of psychological phenomena.

Scientific rigor plays a crucial role in single-case studies, requiring meticulous observation, documentation, and interpretation to uphold the validity and reliability of findings.

Attention to ethical considerations is paramount in these studies, ensuring the well-being and autonomy of the participant while maintaining the integrity of the research process. Researchers must also navigate the limitations inherent in single-case studies, such as generalizability issues and the need for robust experimental controls to establish causal relationships.

Multiple-Case Studies

Multiple-case studies in psychology involve the comparison of several cases to identify commonalities, differences, and patterns, allowing for generalizations within specific contexts.

When conducting multiple-case studies, researchers typically aim to extend beyond individual case analyses to explore overarching themes and patterns that may apply to a larger population or phenomenon.

By utilizing comparative analysis, researchers can delve into the nuances of each case, observing the interplay of various factors and variables that contribute to specific outcomes.

Through this method, researchers can test existing theories, refine hypotheses, and develop new insights that contribute to the broader understanding of complex psychological phenomena.

Frequently Asked Questions

What are case studies in psychology.

Case studies in psychology involve in-depth analysis and examination of an individual, group, or event, usually to understand underlying psychological principles and phenomena.

Why are case studies important in psychology?

Case studies provide detailed and specific information about an individual or group, allowing researchers to gain a deep understanding of complex psychological processes and behaviors.

How do case studies help in understanding psychology?

Case studies help in understanding psychology by providing real-world examples of psychological theories and concepts, making them easier to comprehend and apply.

What are the benefits of using case studies in psychology?

Case studies offer a rich source of data, provide insights into rare or unusual cases, and allow for the exploration of complex and multifaceted phenomena in a real-world context.

Can case studies be used to generalize findings?

No, case studies are not meant to be used for generalization as they focus on a specific individual or group and do not represent the entire population. However, they can be used to generate hypotheses for future research.

What are the limitations of using case studies in psychology?

Some limitations of case studies include potential bias from the researcher, difficulty in replicating results, and lack of control over variables. Additionally, they may not be generalizable to the broader population.

Rachel Liu, a social psychologist, examines the influence of societal and cultural factors on individual behavior. Her research has spanned topics from group dynamics and social identity to the psychological impacts of social media. Rachel’s writing aims to illuminate the ways in which social environments shape our thoughts, feelings, and actions, offering insights into improving interpersonal relationships and fostering inclusive communities.

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Topics for Psychology Case Studies

Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book."

Cara Lustik is a fact-checker and copywriter.

Ridofranz / Getty Images

In one of your psychology classes, you might be asked to write a case study of an individual. What exactly is a case study? A case study is an in-depth psychological investigation of a single person or a group of people.

Case studies are commonly used in medicine and psychology. For example, these studies often focus on people with an illness (for example, one that is rare) or people with experiences that cannot be replicated in a lab.

Here are some ideas and inspiration to help you come up with a fascinating psychological case study.

What Should Your Case Study Be About?

Your instructor will give you directions and guidelines for your case study project. Make sure you have their permission to go ahead with your subject before you get started.

The format of your case study may vary depending on the class requirements and your instructor's expectations. Most psychological case studies include a detailed background of the person, a description of the problem the person is facing, a diagnosis, and a description of an intervention using one or more therapeutic approaches.

The first step in writing a case study is to select a subject. You might be allowed to conduct a case study on a volunteer or someone you know in real life, such as a friend or family member.

However, your instructor may prefer that you select a less personal subject, such as an individual from history, a famous literary figure, or even a fictional character.

Psychology Case Study Ideas

Want to find an interesting subject for your case study? Here are just a few ideas that might inspire you.

A Pioneering Psychologist

Famous or exceptional people can make great case study topics. There are plenty of fascinating figures in the history of psychology who would be interesting subjects for a case study.

Here are some of the most well-known thinkers in psychology whose interesting lives could make a great case study:

Sigmund Freud
Harry Harlow
Mary Ainsworth
Erik Erikson
Ivan Pavlov
Jean Piaget
Abraham Maslow
William James
B. F. Skinner

Examining these individuals’ upbringings, experiences, and lives can provide insight into how they developed their theories and approached the study of psychology.

A Famous Patient in Psychology

The best-known people in psychology aren’t always professionals. The people that psychologists have worked with are among some of the most fascinating people in the history of psychology.

Here are a few examples of famous psychology patients who would make great case studies:

Anna O. (Bertha Pappenheim)
Phineas Gage
Genie (Susan Wiley)
Kitty Genovese
Little Albert
David Reimer
Chris Costner Sizemore (Eve White/Eve Black)
Dora (Ida Bauer)
Patient H.M. (Henry Molaison)

By taking a closer look at the lives of these psychology patients, you can gain greater insight into their experiences. You’ll also get to see how diagnosis and treatment were different in the past compared to today.

A Historical Figure

Historical figures—famous and infamous—can be excellent subjects for case studies. Here are just a few influential people from history that you might consider doing a case study on:

Eleanor Roosevelt
George Washington
Abraham Lincoln
Elizabeth I
Margaret Thatcher
Walt Disney
Benjamin Franklin
Charles Darwin
Howard Hughes
Catherine the Great
Pablo Picasso
Vincent van Gogh
Edvard Munch
Marilyn Monroe
Andy Warhol
Salvador Dali

You’ll need to do a lot of reading and research on your chosen subject's life to figure out why they became influential forces in history. When thinking about their psychology, you’ll also want to consider what life was like in the times that they lived.

A Fictional Character or a Literary Figure

Your instructor might allow you to take a more fun approach to a case study by doing a deep dive into the psychology of a fictional character.

Here are a few examples of fictional characters who could make great case studies:

Macbeth/Lady Macbeth
Romeo/Juliet
Sherlock Holmes
Norman Bates
Elizabeth Bennet/Fitzwilliam Darcy
Katniss Everdeen
Harry Potter/Hermione Granger/Ron Weasley/Severus Snape
Batman/The Joker
Atticus Finch
Mrs. Dalloway
Dexter Morgan
Hannibal Lecter/Clarice Starling
Fox Mulder/Dana Scully
Forrest Gump
Patrick Bateman
Anakin Skywalker/Darth Vader
Ellen Ripley
Michael Corleone
Randle McMurphy/Nurse Ratched
Miss Havisham

The people who bring characters to life on the page can also be fascinating. Here are some literary figures who could be interesting case studies:

Shakespeare
Virginia Woolf
Jane Austen
Stephen King
Emily Dickinson
Sylvia Plath
JRR Tolkien
Louisa May Alcott
Edgar Allan Poe
Charles Dickens
Ernest Hemingway
F. Scott Fitzgerald
George Orwell
Maya Angelou
Kurt Vonnegut
Agatha Christie
Toni Morrison
Daphne du Maurier
Franz Kafka
Herman Melville

Can I Write About Someone I Know?

Your instructor may allow you to write your case study on a person that you know. However, you might need to get special permission from your school's Institutional Review Board to do a psychological case study on a real person.

You might not be able to use the person’s real name, though. Even if it’s not required, you may want to use a pseudonym for them to make sure that their identity and privacy are protected.

To do a case study on a real person you know, you’ll need to interview them and possibly talk to other people who know them well, like friends and family.

If you choose to do a case study on a real person, make sure that you fully understand the ethics and best practices, especially informed consent. Work closely with your instructor throughout your project to ensure that you’re following all the rules and handling the project professionally.

APA. Guidelines for submitting case reports .

American Psychological Association. Ethical principles of psychologists and code of conduct, including 2010 and 2016 amendments .

Rolls, G. (2019). Classic Case Studies in Psychology: Fourth Edition . United Kingdom: Taylor & Francis.

By Kendra Cherry, MSEd Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book."

How to Write a Good Case Study in Psychology (A Step-by-Step Guide)

March 4, 2022
Teaching Kids

A case study psychology is a type of research that uses real-life examples to help understand psychological concepts. This type of research can be used in a variety of settings, such as business, health care, education, and social services.

Case studies are typically composed of three parts: the problem or issue, the intervention or treatment, and the outcome. The problem or issue is what caused the person to seek help, and the intervention or treatment is what was done to try to solve it. The outcome is how things changed after the intervention or treatment was implemented.

Step by step instructions on how to write an effective case study in Psychology

1. Gain Knowledge About The Topic

To write a case study in psychology, you will need to do some research on the topic you are writing about. Make sure that you read journal articles, books, a case study example, and any other reliable sources in order to get a comprehensive understanding of the topic. You will also need to find a suitable example or examples of how psychological concepts have been applied in real-life situations. For example, a psychology student might interview a friend about how she balances her time between work and studies.

2. Research the Individual or Event

In this case, you can choose either a person or an event for your case study research. If you are writing about a specific event, look for past issues that relate to it and any ongoing ones that may have a connection to it.

You may choose to write about a specific problem or situation that affected the individual in some way, such as how it relates to their psychology. For example, you may want to study a man who has been in relationships with several women within the same time period and what effects this has on them.

If you are writing about a person, obtain biographical information and look for any psychological assessments that have been done on the individual.

3. Analyze The Information

Once you have gathered all the necessary information, it is time to go through it and identify important facts that will influence your paper.

This is where you use your skills of inductive and deductive reasoning, to analyze the information that you have gathered. You will usually look for patterns within this information and draw conclusions about how it has affected or contributed to their psychology.

Summarize each point in order to make note-taking easier later on when writing your case study.

4. Draft A Plan

Once you have gathered all the relevant information, it is time to start drafting a plan for your case study. This case study format should include an introduction, body, and conclusion.

The body of the case study should be divided into different sections that will discuss different aspects of the topic. Make sure that your argument is clear and concise, and that you use data to support your ideas, rather than simply stating them as facts or personal opinions.

5. Structure Your Work

As mentioned in the previous step, the body of the case study should be divided into different sections for effective writing. The introduction should include a short paragraph about what you plan to write in the study and what the case study method will be, while the conclusion should summarize your argument and leave the reader with a sense of closure. Each section in the body should have its own heading to help the reader follow your line of argument.

6. Write The Case Study

Now that you have a plan and structure for your case study, it is time to start writing!

Even if you are writing a case study on your own, break it down into small sections and make sure you include every aspect of the topic within each section. Think about how you will present your case study and what points are essential to make in the body.

Include details, quotes, infographics or numeric data that help support your arguments and overall conclusion. This is what makes a great case study: An overview of every aspect of the topic researched within it!

7. Write a Theoretical Introduction

In this section, you will introduce your topic and explain why it is significant in relation to the area of psychology that you are studying.

In the theoretical introduction, you will write about the basic principles of human psychology and growth, then explain how you think this situation relates to your study topic.

After explaining the theoretical part in detail, state why studying this particular aspect will help psychologists understand aspects of humanity within different areas such as sociology or anthropology.

8. Describe How The Individual or Event Was Studied

Researchers in psychology write case studies to gain an in-depth understanding of specific topics pertaining to their field. For this reason, you should explain how you came across your sources of information and why this was beneficial to your research.

In describing how the individual or event was studied, you may also include information about what you discovered through your research and why it is important.

9. Write a Conclusion

In this part of your essay, bring together all key points discussed in the course of writing the case study. You should summarize what you have written and state your own conclusions based on the research that you have conducted.

10. Edit And Proofread The Case Study

Once you have finished writing the case study, it is important to edit and proofread it carefully. This will help to correct any grammatical errors that may have slipped into the writing process, and will also ensure that you are producing an accurate document. You might find it helpful to seek advice from someone who has experience in this field before sending it off for submission.

11. Submit It To The Appropriate Sources

When submitting your case study, make sure that you are sending it to the correct journal or publication. Check the submission guidelines carefully to make sure that your case study meets all the requirements.

By following these steps, you can create a well-written case study that will provide readers with a clear understanding of the topic at hand. Remember to take your time while researching and writing, and to be as thorough as possible in order to produce a high-quality document. Good luck!

The Top 10 Psychology Studies of 2010

Ten great studies from 2010 that can improve your life..

Posted December 20, 2010

The end of 2010 fast approaches, and I'm thrilled to have been asked by the editors of Psychology Today to write about the Top 10 psychology studies of the year. I've focused on studies that I personally feel stand out, not only as examples of great science, but even more importantly, as examples of how the science of psychology can improve our lives.

Each study has a clear "take home" message, offering the reader an insight or a simple strategy they can use to reach their goals , strengthen their relationships, make better decisions, or become happier. If you extract the wisdom from these ten studies and apply them in your own life, 2011 just might be a very good year.

1) How to Break Bad Habits

If you are trying to stop smoking , swearing, or chewing your nails, you have probably tried the strategy of distracting yourself - taking your mind off whatever it is you are trying not to do - to break the habit. You may also have realized by now that it doesn't work. Distraction is a great way to resist a passing temptation, but it turns out to be a terrible way to break a habit that has really taken hold.

That's because habit-behaviors happen automatically - often, without our awareness. So thinking about George Clooney isn't going to stop me from biting my nails if I don't realize I'm doing it in the first place.

What you need to do instead is focus on stopping the behavior before it starts (or, as psychologists tend to put it, you need to "inhibit" your bad behavior). According to research by Jeffrey Quinn and his colleagues, the most effective strategy for breaking a bad habit is vigilant monitoring - focusing your attention on the unwanted behavior to make sure you don't engage in it. In other words, thinking to yourself "Don't do it!" and watching out for slipups - the very opposite of distraction. If you stick with it, the use of this strategy can inhibit the behavior completely over time, and you can be free of your bad habit for good.

J. Quinn, A. Pascoe, W. Wood, & D. Neal (2010) Can't control yourself? Monitor those bad habits. Personality and Social Psychology Bulletin, 36, 499-511.

2) How to Make Everything Seem Easier

Most of us have grown accustomed to the idea that our moods, and even our judgments, can be influenced by unrelated experiences of sight and sound - we feel happier on sunny days, more relaxed when listening to certain kinds of music, and more likely to lose our tempers when it's hot and humid. But very few of us have even considered the possibility that our tactile experience - the sensations associated with the things we touch, might have this same power.

New research by Joshua Ackerman, Christopher Nocera, and John Bargh shows that the weight, texture, and hardness of the things we touch are, in fact, unconsciously factored into our decisions about things that have nothing to do with what we are touching.

For instance, we associate smoothness and roughness with ease and difficulty, respectively, as in expressions like "smooth sailing," and "rough road ahead." In one study, people who completed a puzzle with pieces that had been covered in sandpaper later described an interaction between two other individuals as more difficult and awkward than those whose puzzles had been smooth. (Tip: Never try to buy a car or negotiate a raise while wearing a wool sweater. Consider satin underpants instead. Everything seems easy in satin underpants.)

J. Ackerman, C. Nocera, and J. Bargh (2010) Incidental haptic sensations influence social judgments and decisions. Science, 328, 1712- 1715.

3) How To Manage Your Time Better

Good time management starts with figuring out what tasks you need to accomplish, and how long each will take. The problem is, human beings are generally pretty lousy when it comes to estimating the time they will need to complete any task. Psychologists refer to this as the planning fallacy, and it has the very real potential to screw up our plans and keep us from reaching our goals.

New research by Mario Weick and Ana Guinote shows that, somewhat ironically, people in positions of power are particularly poor planners. That's because feeling powerful tends to focus us on getting what we want, ignoring the potential obstacles that stand in our way. The future plans of powerful people often involve "best-case scenarios," which lead to far shorter time estimates than more realistic plans that take into account what might go wrong.

The good news is, you can learn to more accurately predict how long something will take and become a better planner, if you stop and consider potential obstacles, along with two other factors: your own past experiences (i.e., how long did it take last time?), and all the steps or subcomponents that make up the task (i.e., factoring in the time you'll need for each part.)

M. Weick & A. Guinote (2010) How long will it take? Power biases time predictions. Journal of Experimental Social Psychology.

4) How to Be Happier

Most of us tend to think that if we just had a bit more money we'd get more satisfaction out of life, but on the whole, this turns out not to be true. So why doesn't money make us happier? New research by Jordi Quoidbach and colleagues suggests that the answer lies, at least in part, in how wealthier people lose touch with their ability to savor life's pleasures.

Savoring is a way of increasing and prolonging our positive experiences. Taking time to experience the subtle flavors in a piece of dark chocolate, imaging the fun you'll have on an upcoming vacation (and leafing through your trip photos afterward), telling all your friends on Facebook about the hilarious movie you saw over the weekend - these are all acts of savoring, and they help us to squeeze every bit of joy out of the good things that happen to us.

Why, then, don't wealthier people savor, if it feels so good? It's obviously not for a lack of things to savor. The basic idea is that when you have the money to eat at fancy restaurants every night and buy designer clothes from chic boutiques, those experiences diminish the enjoyment you get out of the simpler, more everyday pleasures, like the smell of a steak sizzling on your backyard grill, or the bargain you got on the sweet little sundress from Target.

Create plans for how to inject more savoring into each day, and you will increase your happiness and well-being much more than (or even despite) your growing riches. And if you're riches aren't actually growing, then savoring is still a great way to truly appreciate what you do have.

J. Quoidbach, E. Dunn, K. Petrides, & M. Mikolajczak (2010) Money giveth, money taketh away: The dual effect of wealth on happiness. Psychological Science, 21, 759-763.

5) How to Have More Willpower

Do you have the willpower to get the job done, or have you found yourself giving in to temptations, distractions, and inaction when trying to reach your own goals? If it's the latter, you're not alone. But more importantly, you can do something about it. New research by Mark Muraven shows that our capacity for self-control is surprisingly like a muscle that can be strengthened by regular exercise.

Do you have a sweet tooth? Try giving up candy, even if weight-loss and cavity-prevention are not your goals. Hate exerting yourself physically? Go out and buy one of those handgrips you see the muscle men with at the gym - even if your goal is to pay your bills on time. In one study, after two weeks of sweets-abstinence and handgripping, Muraven found that participants had significantly improved on a difficult concentration task that required lots of self-control.

Just by working your willpower muscle regularly, engaging in simple actions that require small amounts of self-control - like sitting up straight or making your bed each day - you can develop the self-control strength you'll need to tackle all of your goals.

M. Muraven (2010) Building self-control strength: Practicing self-control leads to improved self-control performance. Journal of Experimental Social Psychology, 46, 465-468.

6) How to Choose a Mate

What role does personality play in creating marital bliss? More specifically, is it your personality, your partner's personality, or the similarity between the two that really matters when it comes to being happy in your marriage ? A study of over 10,000 couples from three countries provides us with some answers.

Your own personality is in fact a powerful predictor of your marital satisfaction. People who were more agreeable , conscientious , and emotionally stable reported being significantly happier with their spouse. That spouse's personality was also a reliable, though slightly less powerful, predictor of relationship satisfaction. Keep these same traits - the "Big 3" for happiness in a marriage - in mind when you are seeking Mr. or Ms. Right.

Finally, there's personality similarly - which, as it happens, doesn't seem to matter at all. The extent to which married couples matched one another on the Big Five traits had no predictive power when it came to understanding why some couples are happy together and others not. This is not to say that having similar goals or values isn't important - just that having similar personalities doesn't seem to be.

So if you are outgoing and your partner is shy , or if you are adventurous and your partner doesn't really like to try new things, it doesn't mean you can't have a satisfying marriage. Whether you are birds of a feather, or opposites that attracted, you are equally likely to live a long and happy life together.

Just try to be generally pleasant, responsible, and even-tempered, and find someone willing to do the same.

P. Dyrenforth, D. Kashy, M.B. Donnellan, & R. Lucas (2010) Predicting relationships and life satisfaction from personality in nationally representative samples from three countries: The relative importance of actor, partner, and similarity effects. Journal of Personality and Social Psychology, 99, 690-702.

7) How to Feel More Powerful

In the animal kingdom, alphas signal their dominance through body movement and posture. Human beings are no different. The most powerful guy in the room is usually the one whose physical movements are most expansive - legs apart, leaning forward, arms spread wide while he gestures. He's the CEO who isn't afraid to swing his feet up onto the conference room table, hands behind his head and elbows jutting outward, confident in his power to spread himself out however he damn well pleases.

The nervous, powerless person holds himself very differently - he makes himself physically as small as possible: shoulders hunched, feet together, hands in his lap or arms wrapped protectively across his chest. He's the guy in the corner who is hoping he won't be called on, and often is barely noticed.

We adopt these poses unconsciously, and they are perceived (also unconsciously) by others as indictors of our status. But a new set of studies by Dana Carney, Amy Cuddy, and Andy Yap reveals that the relationship between power and posing works in both directions. In other words, holding powerful poses can actually make you more powerful .

In their studies, posing in "high power" positions not only created psychological and behavioral changes typically associated with powerful people, it created physiological changes characteristic of the powerful as well. High power posers felt more powerful, were more willing to take risks, and experienced significant increases in testosterone along with decreases in cortisol (the body's chemical response to stress .)

If you want more power - not just the appearance of power, but the genuine feeling of power - then spread your limbs wide, stand up straight, and lean into the conversation. Carry yourself like the guy in charge, and in a matter of minutes your body will start to feel it, and you will start to believe it.

D. Carney, A. Cuddy, and A. Yap (2010) Power posing: Brief nonverbal displays affect neuroendocrine levels and risk tolerance. Psychological Science, 21, 1363-1368.

8) How To Tell If He Loves You

"If he really loved me, then he would..."

Everyone who's ever been in a relationship has had thoughts like this one. If he loved me he would bring me flowers, or compliment me more often, or remember my birthday, or remember to take out the damn garbage. We expect feelings of love to translate directly into loving behaviors, and often judge the quality and intensity of our partner's feelings through their more tangible expressions. When it comes to love, actions speak louder than words, right?

Well, not necessarily. According to new research by psychologists Lara Kammrath and Johanna Peetz, romantic feelings like love, intimacy , and commitment reliably lead to some loving behaviors, but not others. In their studies, love predicted spontaneous, in-the-moment acts of kindness and generosity , like saying "I love you," offering a back rub, or surprising your partner with a gourmet dinner - the kinds of loving actions that don't require much in the way of forethought, planning, or memory .

On the other hand, love does a lousy job of predicting the kinds of "loving" behaviors that are harder to perform, often because they have to be maintained over longer periods of time (e.g., remembering to do household chores without being asked, being nice to one's in-laws) or because there is a delay between the thought and the action (remembering to buy your wife a gift for her birthday next week, keeping a promise call home during your conference in Las Vegas.). When it comes to the harder stuff, it's how conscientious you are, rather than how much in love you are, that really matters.

So if you're trying to get a sense of how your partner really feels about you, the smaller, spontaneous acts of love that occur without much forethought are a much better indicator of the depth of his love than whether or not he remembers your birthday or to take out the trash.

L. Kammrath & J. Peetz (2010) The limits of love: Predicting immediate vs. sustained caring behaviors in close relationships. Journal of Experimental Social Psychology.

9) How to Make It Easier to Cut Your Losses

Sometimes, we don't know when to throw in the towel. As a project unfolds, it becomes clear that things aren't working out as planned, that it will cost too much or take too long, or that someone else will beat you to the punch. But instead of moving on to new opportunities, we continue to devote our time, energy, and money to doomed projects (or even doomed relationships), digging a deeper hole rather than trying to climb our way out of it.

Why? The most likely culprit is our overwhelming aversion to sunk costs - the resources that we've put into an endeavor that we can't get back out. We worry far too much about what we'll lose if we just move on, and not nearly enough about the costs of not moving on - more wasted time and effort, and more missed opportunities.

But thanks to recent research by Daniel Molden and Chin Ming Hui, there is a simple way to be sure you are making the best decisions when your endeavor goes awry: focus on what you have to gain , rather than what you have to lose .

Psychologists call this adopting a promotion focus . When Molden and Hui had participants think about their goals in terms of potential gains, they became more comfortable with accepting the losses they had to incur along the way. When they adopted a prevention focus , on the other hand, and thought about their goals in terms of what they could lose if they didn't succeed, they were much more sensitive to sunk costs.

If you make a deliberate effort to refocus yourself prior to making your decision, reflecting on what you have to gain by cutting your losses now, you'll find it much easier to make the right choice.

D. Molden & C. Hui (2010) Promoting de-escalation of commitment: A regulatory focus perspective on sunk costs. Psychological Science.

10) How to Fight With Your Spouse

Having a satisfying, healthy relationship with your partner doesn't mean never fighting - it means learning to fight well . But what is the best way for two people to cope with their anger , frustration, and hurt, without undermining their mutual happiness?

Thankfully, recent research by James McNulty and Michelle Russell provides the answer. The best way to deal with conflict in a marriage, it turns out, depends on how serious or severe the problem is. Did your spouse drink too much at the party last night, or is he drinking too much every night? Did she splurge a little too much on clothes last month, or are her spending habits edging you closer and closer to bankruptcy ? Did he invite his mother to dinner without discussing it with you first, or did he invite his mother to live with you without discussing it first? Little problems and big problems require very different approaches if you want to have a lasting, happy marriage.

When it comes to minor problems, direct fighting strategies - like placing blame on your spouse for their actions or expressing your anger - results in a loss of marital satisfaction over time. Flying off the handle when he forgets to pick up the dry cleaning yet again, or when she spends a little too much money on a pricey pair of shoes, is going to take its toll on your happiness in the long run. You really are better off letting the small stuff go.

In response to major problems, however, these same direct fighting strategies predict increased marital satisfaction! Expressing your feelings, blaming your partner and demanding that they change their ways will lead to greater happiness when the conflict in question is something significant - something that if left unresolved could ultimately tear your relationship apart.

Issues involving addiction , financial stability, infidelity , child-rearing, and whether or not you live with your mother-in-law need to be addressed, even if it gets a little ugly. Couples who battle it out over serious issues do a better job of tackling, and eventually resolving those issues, than those who swept big problems under the carpet.

J. McNulty & V.M. Russell (2010) When "negative" behaviors are positive: A contextual analysis of the long-term effects of problem-solving behaviors on changes in relationship satisfaction. Journal of Personality and Social Psychology, 98, 587-604.

Heidi Grant Halvorson, Ph.D. , is the Associate Director of the Motivation Science Center and Columbia Business School.

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> Critical Thinking in Psychology
> The Case Study Perspective on Psychological Research

Book contents

Frontmatter
List of Illustrations and Tables
List of Contributors
1 The Nature and Nurture of Critical Thinking
2 Evaluating Experimental Research
3 Critical Thinking in Quasi-Experimentation
4 Evaluating Surveys and Questionnaires
5 Critical Thinking in Designing and Analyzing Research
6 The Case Study Perspective on Psychological Research
7 Informal Logical Fallacies
8 Designing Studies to Avoid Confounds
9 Evaluating Theories
10 Not All Experiments Are Created Equal
11 Making Claims in Papers and Talks
12 Critical Thinking in Clinical Inference
13 Evaluating Parapsychological Claims
14 Why Would Anyone Do or Believe Such a Thing?
15 The Belief Machine
16 Critical Thinking and Ethics in Psychology
17 Critical Thinking in Psychology
Author Index
Subject Index

6 - The Case Study Perspective on Psychological Research

Published online by Cambridge University Press: 05 June 2012

The case study approach has a rich history in psychology as a method for observing the ways in which individuals may demonstrate abnormal thinking and behavior, for collecting evidence concerning the circumstances and consequences surrounding such disorders, and for providing data to generate and test models of human behavior (see Yin, 1998, for an overview). Nevertheless, the most typical methods for scientifically studying human cognition involve testing groups of healthy people – typically, college undergraduates. In their statistics and research methods courses, psychology students are trained to study the effects of manipulations that are significant across groups of participants despite considerable variation at the level of the individual. They are trained to be skeptical of reasoning from an individual case that goes against the general trend, and to be suspicious of the compelling anecdote that may be introduced to defend some position about how cognition or social interactions might work. Given this state of affairs, are the practitioners of the case study approach misguided, or can valid conclusions be drawn from findings with one patient? Can case reports that detail a client's symptoms and reactions to psychotherapy constitute scientific data? What about case studies that investigate how brain damage affects particular cognitive processes? The goal of this chapter is to demonstrate how single-case-study approaches in clinical psychology and cognitive neuropsychology have contributed to the advancement of theories and models of human cognition and to address the common concerns that researchers often have about case study methodology.

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The Case Study Perspective on Psychological Research
By Randi Martin , Rice University, Rachel Hull , Rice University
Edited by Robert J. Sternberg , Yale University, Connecticut , Henry L. Roediger III , Washington University, St Louis , Diane F. Halpern , Claremont McKenna College, California
Book: Critical Thinking in Psychology
Online publication: 05 June 2012
Chapter DOI: https://doi.org/10.1017/CBO9780511804632.007

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A Case for the Case Study: How and Why They Matter

Original Paper
Published: 06 June 2017
Volume 45 , pages 189–200, ( 2017 )

Cite this article

Jeffrey Longhofer 1 ,
Jerry Floersch 1 &
Eric Hartmann 2

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In this special issue we have asked the contributors to make a case for the case study. The guest editors, Jeffrey Longhofer, Jerry Floersch and Eric Hartmann, intergrate ideas from across the disciplines to explore the complexties of case study methods and theory. In education, Gary Thomas explores the importance of ethnographic case studies in understanding the relationships among schools, teachers, and students. Lance Dodes and Josh Dodes use the case study to articulate a psychoanalytic approach to addiction. In policy and generalist practice, Nancy Cartwright and Jeremy Hardie elaborate a model for a case-by-case approach to prediction and the swampy ground prediction serves up to practitioners. Christian Salas and Oliver Turnbull persuasively write about the role of the case study in neuro-psychoanalysis and illustrate it with a case vignette. In political science, Sanford Schram argues for a bottom up and ethnographic approach to studying policy implementation by describing a case of a home ownership program in Philadelphia. Eric Hartman queers the case study by articulating its role in deconstructing normative explanations of sexuality. In applied psychology, Daniel Fishman describes a comprehensive applied psychology perspective on the paradigmatic case study. Richard Miller and Miriam Jaffe offer us important ways of thinking about writing the case study and the use of multi-media. Each contributor brings a unique perspective to the use of the case study in their field, yet they share practical and philosophical assumptions.

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Longhofer, J., Floersch, J. & Hartmann, E. A Case for the Case Study: How and Why They Matter. Clin Soc Work J 45 , 189–200 (2017). https://doi.org/10.1007/s10615-017-0631-8

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3. Asch Conformity Study

4. The Bobo Doll Experiment

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11. Anna O.

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13. Chris Sizemore

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Psychology’s 10 Greatest Case Studies – Digested

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