Lt. Col. Dave Grossman

Director, Killology Research Group

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St. Louis, Missouri

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Lt. Col. Dave Grossman, is an award winning author who has published four novels, two children’s books, and six non-fiction books to include his “perennial bestseller” On Killing (with over half a million copies sold, translated into seven languages), and a New York Times best-selling book co-authored with Glenn Beck.  His books are “required” or “recommended” reading in all four branches of the US Armed Forces, and in federal and local law enforcement academies nationwide.  

He is a US Army Ranger, a paratrooper, and a former West Point Psychology Professor.  He has five patents to his name, has earned a Black Belt in Hojutsu (the martial art of the firearm), and has been inducted into the USA Martial Arts Hall of Fame.  

Col. Grossman’s research was cited by the President of the United States in a national address, and he has testified before the U.S. Senate, the U.S. Congress, and numerous state legislatures.  He has served as an expert witness and consultant in state and Federal courts.  He helped train mental health professionals after the Jonesboro school massacre, and he was also involved in counseling or court cases in the aftermath of the Paducah, Springfield, Littleton and Nickel Mines Amish school massacres.  

Col. Grossman has been called upon to write the entry on “Aggression and Violence” in the Oxford Companion to American Military History, three entries in the Academic Press Encyclopedia of Violence, Peace and Conflict and has presented papers before the national conventions of the American Medical Association, the American Psychiatric Association, the American Psychological Association, and the American Academy of Pediatrics.  

 Since his retirement from the US Army in 1998, he has been on the road almost 300 days a year, for over 23 years, as one of our nation’s leading trainers for military, law enforcement, mental health providers, and school safety organizations.

Today Col. Grossman is the director of the Killology Research Group (www.killology.com).  In the wake of the 9/11 terrorist attacks he is has written and spoken extensively on the terrorist threat, with articles published in the Harvard Journal of Law and Civil Policy and many leading law enforcement journals, and he has been inducted as a “Life Diplomate” by the American Board for Certification in Homeland Security, and a “Life Member” of the American College of Forensic Examiners Institute.  After the Parkland FL school massacre, he was invited to the White House as a member of the President’s Round Table on Violent Video Games.  In 2019 he was again invited to the White House to brief the Vice President.

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