Dr. Dewey G. Cornell, Ph.D.

PCG Partner

Dr. Dewey G. Cornell, Ph.D., is a forensic clinical psychologist and professor at University of Virginia’s Curry School of Education and a faculty associate of the Institute of Law, Psychiatry, and Public Policy. He is also the director of the Virginia Youth Violence Project.

Dr. Cornell is also a prolific author, having written over 200 publications in the fields of psychology and education. He is well known for being the developer of the Comprehensive School Threat Assessment Guidelines (CSTAG), an evidence-based model of school threat assessment used in schools across the U.S. and Canada.

He has extensive experience working with juvenile and adult violent offenders, has testified in criminal proceedings and legislative hearings, and has consulted on violence prevention efforts. His main research areas include:

  • Forensic clinical psychology
  • Psychological assessment
  • Juvenile violence and delinquency prevention
  • School safety, bullying, and student threat assessment


"This manual does a great job of helping schools analyze student behavior to provide supports and interventions BEFORE violence occurs. A great step-by-step guide that can be used in schools and districts of any size or demographics, and it aligns with the U.S. Secret Service recommendations. This research-based program is a must-have for all schools. Thanks Dewey!"