Founder and "Father" of Positive Psychology; Zellerbach Family Professor of Psychology, Department of Psychology; Director, Positive Psychology Center; Director, Master of Applied Positive Psychology Program, School of Arts and Sciences, University of Pennsylvania; Author, Flourish: A Visionary New Understanding of Happiness and Well-Being (2012), Learned Optimism (2006), The Optimistic Child (2007) and Authentic Happiness (2004)