Daniel J. Christie is Professor of Psychology at Ohio State University and past president of Division 48 of the American Psychological Association (Society for the Study of Peace, Conflict, and Violence: Division of Peace Psychology), and Psychologists for Social Responsibility. He is co-author of Peace, Conflict, and Violence: Peace Psychology for the 21st Century (Prentice-Hall), and Series Editor for the forthcoming Peace Psychology Book Series (Springer Publishers). His recent research focuses on the structural basis of conflict and peace, human needs theory, nonviolent democratization movements, social activism, and developmental changes in children's perceptions and understandings of violent events.