Robert Waldinger is a psychiatrist, psychoanalyst and Zen priest. He is Clinical Professor of Psychiatry at Harvard Medical School and directs the Harvard Study of Adult Development. The role that he speak on the stage TEDTalk is Director of Harvard Study of Adult Development. The topic of his talk is
"What makes a good life? Lessons from the longest study on happiness”. This is The Harvard Study of Adult Development may be the longest study of adult life that's ever been done. The Study tracked the lives of two groups of men for over 75 years