Martin Seligman

Martin E. P. Seligman (born August 12, 1942, in Albany, New York) is an American psychologist and author of self-help books. His theory of "learned helplessness" is widely respected among scientific psychologists. He is the director of the Positive Psychology Center at the University of Pennsylvania. According to Haggbloom et al.'s study of the most eminent psychologists of the 20th century, Seligman was the 13th most frequently cited psychologist in introductory psychology textbooks throughout the century