Now the basis of a new autumn 2010 BBC 1 series on turning back time, top psychologist Ellen Langer shows the power of thinking yourself younger.

Ellen J. Langer was the first woman to be tenured in psychology at Harvard where she is still Professor of Psychology, and a member of the Division on Aging of the Faculty of Medicine. Dr Langer is the author of eleven books and over two hundred research articles. She lives in Cambridge, M.A.