The Creators

The Matrix was created by Drs. Cynthia Lum and Christopher Koper of George Mason University with the assistance of Dr. Cody Telep (previously at GMU, and now at Arizona State University).

Cynthia Lum, Ph.D.

pic-lumDr. Cynthia Lum is Director of the CEBCP and Associate Professor in the Department of Criminology, Law and Society at George Mason University. She researches primarily in the area of policing, security, and evidence-based crime policy. Her works in this area have included evaluations of policing interventions and police technology, understanding the translation and receptivity of research in policing, and assessing security efforts of federal agencies. With Drs. Christopher Koper and Cody Telep she has developed the Evidence-Based Policing Matrix and the Matrix Demonstration Projects, translation tools designed to help police practitioners incorporate research into their strategic and tactical portfolio. She is a member of the Research Advisory Committee of the IACP, the International Advisory Committee of the Scottish Institute for Police Research, the Board of Trustees for the Pretrial Justice Institute, and a Fulbright Specialist. She is the North American editor for Policing: A Journal of Policy and Practice (Oxford), and the founding editor of Translational Criminology Magazine and the Springer Series on Translational Criminology. (Curriculum Vitae)

Christopher Koper, Ph.D.

koperDr. Christopher S. Koper is an Associate Professor in the Department of Criminology, Law and Society at George Mason University and a senior fellow in the Center for Evidence-Based Crime Policy. Dr. Koper holds a Ph.D. in criminology and criminal justice (University of Maryland) and has over 20 years of experiencing conducting criminological research at George Mason, the Police Executive Research Forum, the University of Pennsylvania, the Urban Institute, the RAND Corporation, the Police Foundation, and other organizations. Dr. Koper specializes in issues related to firearms, policing, and program evaluation. His work includes studies of the 1994 federal assault weapons ban and other policies and practices to reduce gun violence, studies of hot spots policing (including what is often referred to as the “Koper curve” principal of hot spots patrol), the Evidence-Based Policing Matrix, and studies of police technology. (Curriculum Vitae)

Cody Telep, Ph.D.

pic-telepCody Telep is an Assistant Professor in the School of Criminology and Criminal Justice at Arizona State University. He received his PhD from the Department of Criminology, Law and Society at George Mason University in 2013. While at George Mason, he worked for five years for CEBCP as a graduate research assistant and research associate. He received an MA from the Department of Criminology and Criminal Justice at the University of Maryland in 2008.  His research interests include innovations in policing, experimental criminology, evidence-based policy, and police education. His recent work has appeared in Justice Quarterly, Police Quarterly, Journal of Criminal Justice Education, and Journal of Experimental Criminology. (Curriculum Vitae)

Research Assistants

  • Julie Grieco, MA
  • Jordan Nichols, MA
  • Xiaoyun Wu, MA

We welcome your questions, comments, or concerns with the Matrix. Please feel free to contact us at with your inquiry.