Christopher Koper

Christopher Koper

Christopher Koper

Associate Professor

Firearms, violence, and public policy; police and crime control; technology and organizational change in policing; policy and program evaluation

Dr. Christopher S. Koper is an Associate Professor in the Department of Criminology, Law and Society at George Mason University and the Principal Fellow of George Mason’s Center for Evidence-Based Crime Policy.  Dr. Koper has 30 years of experience studying crime and justice issues at George Mason, the Police Executive Research Forum, the University of Pennsylvania, the Urban Institute, the RAND Corporation, the Police Foundation, and other organizations.  He has written extensively on issues related to policing, firearms, federal crime prevention efforts, research methods, and other topics.  Dr. Koper has served as a lead or senior-level investigator on numerous projects for the U.S. Department of Justice and other funders, and as a consultant to the attorney generals and city attorneys of several states and localities. Some of his most prominent works include: studies of the 1994 federal assault weapons ban; the Evidence-Based Policing Matrix tool for policy translation of research on police crime control strategies (; and the “Koper curve” principle of hot spots patrol, which is used by many police agencies in the United States and abroad. Dr. Koper is a fellow of the Academy of Experimental Criminology, the co-editor of Criminology and Public Policy (for issues starting in 2020), and the co-author of Evidence-Based Policing: Translating Research into Practice (Oxford University Press).


Current Research

An Evidence-Based Approach to Understanding and Countering Mass Violence in America. Funded by the National Science Foundation. (In collaboration with Daniel Nagin and Cynthia Lum)

The Proactive Policing Lab. Funded by the Laura and John Arnold Foundation. (In collaboration with Cynthia Lum)

A Study of Patrol Officer Time: A Comprehensive Analysis of Computer Aided Dispatch Data and Dispatcher Decision-Making. Funded by the Laura and John Arnold Foundation. (In collaboration with Cynthia Lum)

A Randomized Controlled Trial on Community Infused Problem-Oriented Policing in Crime Hot Spots (CPOP-HS): Looking Beyond Crime Reduction. Funded by the National Institute of Justice. (In collaboration with Bruce Taylor and Weiwei Liu)



Selected Publications

Koper, Christopher S. 2020. "Assessing the Potential to Reduce Deaths and Injuries from Mass Shootings through Restrictions on Assault Weapons and Other High-Capacity Semiautomatic Firearms.” Criminology and Public Policy. DOI: 10.1111/1745-9133.12485.

Koper, Christopher S. and Cynthia Lum. 2019. “The Impacts of Large-Scale License Plate Reader Deployment on Criminal Investigations." Police Quarterly, DOI: 10.1177/1098611119828039. Published online Feb. 12.

Koper, Christopher S. William D. Johnson, Jordan L. Nichols, Ambrozine Ayers, and Natalie Mullins. 2018. “Criminal Use of Assault Weapons and High Capacity Semiautomatic Firearms: An Updated Examination of Local and National Sources.” Journal of Urban Health 95(3): 313-321. DOI 10.1007/s11524-017-0205-7.

Lum, Cynthia and Christopher S. Koper. 2017. Evidence-Based Policing: Translating Research into Practice. Oxford, UK: Oxford University Press.



Courses Taught

CRIM 516 / 781 Justice Program Evaluation

CRIM 490 Firearms Law, Policy and Politics (special topics course)

Dissertations Supervised

Matthew D'Anna, Black Swan Shootings: A Model for Predicting the Worst of the Worst Mass Shootings (2020)

Xiaoyun Wu, Understanding Everyday Police Proactivity and its Relationship with Crime (2019)