Gerald Matthews, Ph.D., is Professor of Psychology at the University of Cincinnati. His research focuses on the use of cognitive science models to understand the interplay between personality, emotion, and information-processing. He is the coauthor or coeditor of seven books, and he has published over 200 articles and book chapters. Moshe Zeidner, Ph.D., is Professor of Educational Psychology and Director of the Center for the Interdisciplinary Research on Emotion at the University of Haifa, Israel. He has conducted research in the area of personality and individual differences and is the author or co-editor of 10 books and author or co-author of about 200 scientific papers. Richard D. Roberts, Ph.D., is a Senior Research Scientist, in the Center for New Constructs at the Educational Testing Service, Princeton, NJ. His area of specialization is applied psychology, with a special emphasis on educational and psychological assessment. He has published over 100 scientific papers in areas as diverse as wind engineering, sensory processes, human cognitive abilities, emotions, personality, cognitive enhancement, and diurnal preference.