David G. Winter is Professor Emeritus of Psychology at the University of Michigan. He was educated at Harvard University and the University of Oxford. He is a personality and social psychologist with special interests in political psychology, psychological aspects of war and peace, and methods of assessing the personalities of leaders "at a distance," without direct contact or access. He is the author of Roots of War: Wanting Power, Seeing Threat, Justifying Force (2017) and Personality: Analysis and Interpretation of Lives (1996) as well as numerous journal articles.