Stephen D Mastrofski

Stephen D Mastrofski

Stephen D Mastrofski

Emeritus Faculty

Police discretion, police organizations and their reform, systematic field observation methods in criminology

Stephen Mastrofski is a Professor Emeritus in the Department of Criminology, Law and Society at George Mason University.  His research interests include police discretion, police organizations and their reform, and systematic field observation methods in criminology. For several years Professor Mastrofski led a large team of researchers supporting and evaluating the transformation of the Trinidad and Tobago Police Service.  He is currently engaged in an evaluation of community policing as a reform.  He has served on the editorial boards of seven criminology and criminal justice journals, currently serving on the boards of two international policing journals.  He has been a Visiting Fellow at the National Institute of Justice and the Office of Community Oriented Policing and has consulted for a variety of public and private organizations.  In 2000 he received the O.W. Wilson Award from the Academy of Criminal Justice Sciences for education, research, and service on policing.  He served on the National Academies of Sciences panel on Police Services and Practices that published the 2004 book, Fairness and Effectiveness in Policing: The Evidence and the National Academies Committee on Proactive Policing.  In 2008 he and his coauthors received the Law and Society Association’s article prize for their article using different organizational theories to explain Compstat’s implementation as a police reform.  In 2010 he was elected a Fellow of the American Society of Criminology. In 2015 he received the Lifetime Achievement Award from the Division of Policing of the American Society of Criminology.


Current Research

2010-2017.  Principal Investigator.  Measuring the Craft of Law Enforcement:  What Is Good Policing?  Center for Justice Leadership and Management, George Mason University.

2008-2016.  Co-principal Investigator.  National Police Research Platform.   National Institute of Justice.

2004-2011.  Principal Investigator.  The Trinidad and Tobago Police Service Project.  Ministry of National Security, Trinidad and Tobago.

Selected Publications

Willis, J. J. and Mastrofski, S. D. 2017. Understanding the culture of craft: Lessons from two police agencies. Journal of Crime and Justice 40(10):84-100.

Mastrofski, S. D., Jonathan-Zamir, T. Moyal, S., and Willis, J. J. 2016. Predicting procedurl justice in police-citizen encounters. Criminal Justice and Behavior 43(1):119-139.

Mastrofski, S. D. 2015. Police CEOs: Agents of Change? The Police Chief 82(11):52-54.

Jonathan-Zamir, T., Mastrofski, S. D., and Moyal, S. 2015. Measuring procedural justice in police-citizen encounters. Justice Quarterly 32(5):854-871.

Courses Taught

CRIM 401  Policing in America

CRIM 510  Policing in a Democratic Society

CRIM 742  Leadership in Justice and Security Organizations

CRIM 795  Innovations in Policing




Ph. D. Political Science, University of North Carolina-Chapel Hill, 1981.