Christel Lutz, Ph.D. is a lecturer in Psychology at University College Utrecht, the Netherlands. She received her MSc. in physics from Utrecht University and her Ph.D. in experimental cognitive psychology from the University of Pennsylvania, where she taught courses in perception and cognitive psychology. She is a fellow in the Department of Social Sciences at University College Utrecht, and has developed courses in experimental psychology and the psychology of human motivation. Her current research focuses on learning and motivation, and on the intellectual development of college students.
Barbara L. Fredrickson, Ph.D. is Kenan Distinguished Professor at the University of North Carolina at Chapel Hill, with appointments in Psychology and the Kenan-Flagler School of Business. She received her B.A. in psychology from Carleton College and her Ph.D. from Stanford University. Fredrickson´s research centers on emotions, especially positive emotions and their links to health and well-being. She has shared her research findings with scientists and students of psychology through scores of peer-reviewed journal articles and also with a general audience through her book, Positivity (2009, Crown). Her research and teaching have been recognized with several honors and awards, including the American Psychological Association´s Templeton Prize in Positive Psychology, and the Society for Experimental Social Psychology´s Career Trajectory Award.
Geoff Loftus received his BA from Brown University, and Ph.D. from Stanford University. He has been professor at the University of Washington in Seattle since 1973, as well as visiting professor at MIT. He served as editor of Memory & Cognition, associate editor of Cognitive Psychology, and editorial-board member of various other journals. He has authored numerous books, book chapters, and articles.
His research concerns human perception and memory, as well as mathematics, statistics, scientific methodology, urban design, and video games. He has testified as an expert witness in approximately 250 civil and criminal legal cases.