Roy Eidelson is a psychologist who studies, writes about, and consults on the role of psychological issues in political, organizational, and group conflict settings. His most recent book is Doing Harm: How the World's Largest Psychological Association Lost Its Way in the War on Terror. He is a past president of Psychologists for Social Responsibility, a member of the Coalition for an Ethical Psychology, and the former executive director of Solomon Asch Center for Study of Ethnopolitical Conflict at the University of Pennsylvania..