David A Schroeder Author & Editor

David A. Schroeder is a Professor of Psychological Science and Director of Experimental Training at the University of Arkansas. He received his B.S. in psychology from Purdue University and his Ph.D. in social psychology from Arizona State University. He has authored numerous books and professional articles and delivered many conference presentations in the course of studying the motivation for helping behavior, social dilemmas, social-influence processes, and social justice. William G. Graziano is a Professor of Psychological Sciences at Purdue University. He received his B.A. in psychology from Franklin and Marshall College and his Ph.D. from the University of Minnesota. He has authored professional articles and presentations on topics as diverse as personality and social/personality development, motivation, and interpersonal relations.