August 23, 1956
- Born in Frankfurt, West Germany
- Specialized in the study of the psychology of killing
- Lieutenant colonel in the United States Army
- Professor of psychology at West Point
- 1995 – Author – On Killing: The Psychological Cost of Learning to Kill in War and Society
- 1999 – Author – Stop Teaching Our Kids to Kill: A Call to Action Against TV, Movie and Video Game Violence
- 2004 – Author – On Combat: The Psychology and Physiology of Deadly Conflict in War and in Peace
- 2016 – Author – Assassination Generation : Video Games, Aggression, and the Psychology of Killing