Claudia Hammond revisits Langer and Rodin's 1976 Arden House study.
Carol Dweck showed how changing people's beliefs can affect their levels of achievement.
Chris Anderson talks to some of the most interesting TED stage speakers.
Claudia Hammond with more experiments that changed our understanding of the human mind.
Roy Baumeister on why we must beat the tyranny of our negativity bias. With Helen Lewis.
Claudia Hammond looks at the conformity experiments of social psychologist, Solomon Asch.