Claudia Hammond meets Elizabeth Loftus, the psychologist whose research into eye witness testimony and the fallibility of memory changed how police and courts deal with witnesses. Show more

Claudia Hammond tells the story of SB, who had his sight restored after over 50 years of blindness. Studied by Richard Gregory, his case transformed the field of visual perception. Show more

Claudia Hammond re-visits the Minimal Group Studies done by the eminent social psychologist Henri Tajfel in 1971 and reviews their role in the development of Social Identity Theory. Show more

4 Extra Debut. Claudia Hammond revisits David Rosenhan's 1973 study which revealed huge problems with psychiatric diagnoses. From July 2009. Show more

Claudia Hammond examines the 1920s experiment in a Chicago factory giving rise to a classic textbook phenomenon. From August 2009. Show more

Claudia Hammond revisits Langer and Rodin's 1976 Arden House study, showing how certain actions can prolong life. From August 2009. Show more

Claudia Hammond meets Julian Rotter, who promoted personality theory in clinical psychology with his test to measure if a subject has an internal or external locus of control. Show more

Claudia Hammond meets James Pennebaker, who proved that simply writing about how you feel can improve your health and so revolutionised how emotions are viewed within psychology. Show more

Claudia Hammond examines the Hierarchy of Needs, part of psychologist Abraham Maslow's theory of motivation: only when basic needs are met can humans aspire to higher achievements. Show more

Claudia Hammond examines the legacy of Donald Broadbent. The British psychologist launched the cognitive revolution with his work on attention and how information is processed. Show more

Claudia Hammond meets Carol Dweck. She discovered that people with a growth mindset believe they can do better and do; if their mindset is fixed, so is their level of achievement. Show more

Claudia Hammond explores Carl Rogers's revolutionary approach to psychotherapy, led by the client and not the therapist. His influence can be seen throughout the field today. Show more

Claudia Hammond explores Joseph Wolpe's treatment for phobias which can be seen as the foundation for today's cognitive behaviour therapy. Show more

Claudia Hammond explores the legacy of BF Skinner and behaviourism. One of the most famous psychologists of the 20th century, he remains one of the most controversial. Show more

Claudia Hammond presents a series looking at the development of psychology. Albert Bandura's ground-breaking 1961 Bobo Doll experiment explosed the dangers of imitative behaviour. Show more

Claudia Hammond reflects on the enduring impact of Anna Freud's approach. By insisting on observation in her nurseries, she promoted the understanding of the child's perspective. Show more

When a young woman was brutally killed in an attack in New York in 1964, not one of 38 witnesses called for help. The case led to the naming of the phenomenon as Bystander Effect.

A man known as HM provided the key to one of the mysteries of the human brain. Having lost his own memory through surgery for epilepsy, HM revealed how new memories are formed. Show more

For decades the John/Joan case apparently proved that nurture not nature dictates gender identity. In fact, the case was not a success and hid a personal tragedy for David Reimer. Show more

Claudia Hammond looks at Ainsworth's observational work in Africa influencing perceptions of the parent-child relationship. Show more