Martin E.P. Seligman, Ph.D., works on positive psychology, learned helplessness, depression, and on optimism and pessimism. He is currently Zellerbach Family Professor of Psychology and Director of the Positive Psychology Center at the University of Pennsylvania. He is well known in academic and clinical circles and is a best-selling author.

His bibliography includes twenty books and 200 articles on motivation and personality. Among his better-known works are Learned Optimism (Knopf, 1991), What You Can Change & What You Can't (Knopf, 1993), The Optimistic Child (Houghton Mifflin, 1995), Helplessness (Freeman, 1975, 1993) and Abnormal Psychology (Norton, 1982, 1988, 1995, with David Rosenhan.

His most recent book is the best-selling, Authentic Happiness (Free Press, 2002). He is the recipient of two Distinguished Scientific Contribution awards from the American Psychological Association, the Laurel Award of the American Association for Applied Psychology and Prevention, and the Lifetime Achievement Award of the Society for Research in Psychopathology. He holds an honorary Ph.D. from Uppsala, Sweden and Doctor of Humane Letters from the Massachusetts School of Professional Psychology.

Dr. Seligman received both the American Psychological Society's William James Fellow Award (for contribution to basic science) and the James McKeen Cattell Fellow Award (for the application of psychological knowledge).

Dr. Seligman's research and writing has been broadly supported by a number of institutions including The National Institute of Mental Health (continuously since 1969), the National Institute of Aging, the National Science Foundation, the Department of Education, the Guggenheim Foundation, and the MacArthur Foundation. His research on preventing depression received the MERIT Award of the National Institute of Mental Health in 1991. He is the network director of the Positive Psychology Network and Scientific Director of the Classification of Strengths and Virtues Project of the Mayerson Foundation.