Barry Smith is a Professor of Psychology at the University of Maryland, College Park, where he has also been Acting Chair of the department and Director of Undergraduate Studies. The recipient of the Distinguished Teacher/Mentor Award, he has regularly taught introductory psychology, as well as graduate and undergraduate courses in personality, statistics, research design, and, most recently, biopsychology. He has authored and edited several earlier books, including Theories of Personality (1991), and has published numerous articles and chapters in major professional journals and handbooks. A