About the Author        

Mark Costanzo is Professor of Psychology and co-director of the Center for Applied Psychological Research at Claremont McKenna College.  He has published research on a variety of law-related topics including jury decision-making, sexual harassment, attorney argumentation, alternative dispute resolution, and the death penalty. He is author of Just Revenge: Costs and Consequences of the Death Penalty (St. Martin’s Press, 1997) and co-editor (with Stuart Oskamp) of Violence and the Law (Sage Publications, 1994).  Professor Costanzo has served as an expert witness and has appeared on national radio and television programs to discuss the applications of psychological science to the legal system.  He serves on the editorial board of Law and Human Behavior and is co-organizer of the annual Claremont Symposium on Applied Psychology.