Martin Seligman
Martin E. P. "Marty" Seligman (born August 12, 1942) is an American psychologist, educator, and author of self-help books. His theory of learned helplessness is popular among scientific and clinical psychologists. Seligman is the Zellerbach Family Professor of Psychology in the University of Pennsylvania's Department of Psychology. He was previously the Director of the Clinical Training Program in the department. He is the director of the university's Positive Psychology Center. Seligman was elected President of the American Psychological Association for 1998. He is the founding editor-in-chief of Prevention and Treatment Magazine (the APA electronic journal) and is on the board of advisers of Parents magazine. Seligman has written about positive psychology topics such as The Optimistic Child, Child's Play, Learned Optimism, Authentic Happiness, and Flourish.