FacultyFaculty/Author Profile
Marisa  Randazzo, Ph.D.

Marisa Randazzo, Ph.D.

SIGMA Threat Management Associates, PA
Managing Partner
Alexandria, VA, USA

Dr. Randazzo is a Managing Partner of SIGMA Threat Management Associates and an international expert on threat assessment, targeted violence, and violence prevention.  In addition to her work at SIGMA, she currently serves as Director of Threat Assessment for Georgetown University. 

Previously, Dr. Randazzo served for ten years with the U.S. Secret Service, most recently as the agency's Chief Research Psychologist. Among her various responsibilities, she co-directed the Safe School Initiative, 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 15,000 professionals in law enforcement, management, administration, mental health, and the intelligence community 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. She is co-author of two leading books on threat assessment: The Handbook for Campus Threat Assessment and   Management   Teams   (2008)   and Implementing Behavioral Threat Assessment on Campus: A Virginia Tech Demonstration Project (2009); both books are referenced as best-practice resources in several federal guides on emergency planning and in an American National Standard. 

Dr. Randazzo has testified before Congress and has been interviewed by major television, radio, and print news outlets, including 60 Minutes, Good Morning America, Nightline, Today, the Early Show, 48 Hours, Dateline NBC, MSNBC, the New York Times, Esquire Magazine, Redbook Magazine, and National Public Radio. She currently serves on the editorial board of the Journal of Threat Assessment & Management.  She has also published under her maiden name, Marisa Reddy.

Dr. Randazzo received her Ph.D. and Master's degree from Princeton University in Social Psychology, and a B.A. in Psychology and Religion from Williams College. Dr. Randazzo was awarded the Williams College Bicentennial Medal for her work in preventing violence and was recently honored as a Distinguished Alumna of the Spence School.


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