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Bio Portrait

Dr. Marisa Randazzo

Sigma Threat Management Associates

Dr. Marisa R. Randazzo is a national expert on threat assessment and targeted violence. Before joining the private sector, Dr. Randazzo served for ten years with the U.S. Secret Service as the agency’s Chief Research Psychologist. She directed all Secret Service research on school shootings, insider threats, stalking, and other types of targeted violence, including the landmark federal study of school shootings that was conducted jointly by the U.S. Secret Service and U.S. Department of Education.

Dr. Randazzo is an accomplished presenter and instructor on threat assessment investigations, having trained over 10,000 law enforcement, intelligence, and security professionals throughout the United States, Canada, and the European Union. Her research is used in the federal, state, and local law enforcement communities and has been credited in the media with preventing planned attacks. Dr. Randazzo served as a Senior Expert with Business Intelligence Advisors, Inc., where she provided high-net worth families, corporations, and schools with investigative consultation on individual threat cases and training on threat assessment, bomb threat assessment, and the detection of deception. She also provided training on abduction prevention and escape tactics for children of high-net worth families, their caregivers, and protective details.

Dr. Randazzo has testified before Congress and has been interviewed by major television, radio, and print news outlets, including 60 Minutes, the Today Show, 48 Hours, Dateline NBC, MSNBC, the New York Times, and National Public Radio. She has published numerous articles on threat assessment and violence prevention and currently serves on the editorial board of the Journal of Threat Assessment. She has also published under her maiden name, Marisa Reddy. Dr. Randazzo received a Ph.D. and Master’s degree from Princeton University in Social Psychology, and a B.A. in Psychology and Religion from Williams College. In 2005, Dr. Randazzo was named by Williams College as a Bicentennial Medalist for her work in preventing violence.


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COPS LogoThis project was supported by Cooperative Agreement Number 2008-CK-WX-K006 awarded by the Office of Community Oriented Policing Services, U.S. Department of Justice. The opinions contained herein are those of the author(s) and do not necessarily represent the official position or policies of the U.S. Department of Justice. References to specific companies, products, or services should not be considered an endorsement by the author(s) or the U.S. Department of Justice. Rather, the references are illustrations to supplement discussion of the issues.