Lieutenant Colonel Dave Grossman is an internationally known scholar, author, soldier, and speaker and is one the world's foremost experts in the field of human aggression and the roots of violence and violent crime. Col. Grossman is a West Point psychology professor, a professor of Military Science, Army Ranger and the author of numerous books on the topic of killology. He is director of the Killology Research Group.

Visit Lieutenant Colonel Grossman's web site at www.killology.com