John MacDonald

Professor of Criminology and Sociology, School of Arts and Sciences, University of Pennsylvania
Faculty, Penn Injury Science Center

Dr. MacDonald works on a variety of topics in criminology, including the study of crime and violence; race and ethnic disparities in criminal justice; and the effect of public policy responses on crime. Recent work has looked at the effect of greening vacant lots, finding that neighborhoods where such lots were cleaned up experienced a 29 percent reduction in gun violence and 7 percent reduction in fatal and nonfatal shootings. He is also part of the Penn Injury Science Center, which performs research, provides training, and translates scientific discoveries into practice and policy.

Media Contact

Michele W. Berger | 215-898-6751 |