Lawrence Kohlberg's experiment to quantify the human capacity for ethical reasoning. Read more
The Heinz Dilemma
Lawrence Kohlberg's experiment to quantify the human capacity for ethical reasoning.
The Bobo Doll
Albert Bandura's experiment in 1961 exposed the dangers of imitative behaviour.
Case Study: Kitty Genovese
A brutal killing led to the naming of the phenomenon known as Bystander Effect.
Case Study: The Wild Boy of Aveyron
In 1800, 12-year-old Victor emerged from the woods, naked and behaving like an animal.
Case Study: The Man with a Hole in His Head
Phineas Gage was a railway worker in 19th-century Vermont who survived a bizarre accident.
Case Study: Little Hans
A small boy's phobia of horses seemed unlikely evidence for the Oedipus complex.
The Pseudo-Patient Study
Claudia Hammond revisits David Rosenhan's influential 1973 study of psychiatric diagnoses.
The Hawthorne Effect
The 1920s experiment in a Chicago factory that gave rise to a classic textbook phenomenon.
Revisiting Harry Harlow's surrogate mothers experiment, which revolutionised parenting.
Claudia Hammond revisits Langer and Rodin's 1976 Arden House study.
Case Study: HM - The Man Who Couldn't Remember
A man known as HM provided the key to one of the mysteries of the human brain.
Case Study: John/Joan - The Boy Who Was Raised as a Girl
The case that for years apparently proved that nurture not nature dictates gender identity
Case Study: SB - The Man Who Was Disappointed with What He Saw
The story of SB, who had his sight restored after over 50 years of blindness.
Case Study: Dora - The Girl Who Walked Out on Freud
The story of Dora, Freud's first case history, which he used to explain infant sexuality.
Walter Mischel's Marshmallow Study
Claudia Hammond with more experiments that changed our understanding of the human mind.
Henri Tajfel's Minimal Groups
Elizabeth Loftus and Eye Witness Testimony
Joseph Wolpe and Systematic Desensitization
Exploring Joseph Wolpe's development of a treatment for patients with phobias.
Julian Rotter and Locus of Control
Claudia meets Julian Rotter, who promoted personality theory in clinical psychology.
Donald Broadbent and the Cocktail Party
Claudia Hammond examines the legacy the psychologist who launched the cognitive revolution
James Pennebaker and Expressive Writing
James Pennebaker proved that simply writing about how you feel can improve your health.
Abraham Maslow and the Hierarchy of Needs
Claudia examines the Hierarchy of Needs, part of Abraham Maslow's theory of motivation.
Anna Freud and Child Observation
By insisting on observation in nurseries, Anna Freud promoted understanding of children.
Carol Dweck and Growth Mindset
Carol Dweck showed how changing people's beliefs can affect their levels of achievement.
BF Skinner and Superstition in the Pigeon
A classic experiment in operant conditioning conducted by the famous behaviourist.
Carl Rogers and the Person-Centred Approach
While Freud relied on expert and patient, Rogers pioneered a therapeutic model of equals.