Aaron J. ChalfinView profile
Associate Professor
Aaron J. Chalfin serves as Associate Professor and Graduate Chair of Criminology within the Department of Criminology at the University of Pennsylvania's College of Liberal and Professional Studies. He maintains significant external affiliations as a Senior Fellow at the Niskanen Center, faculty research fellow at the National Bureau of Economic Research, and research affiliate at the University of Chicago Crime Lab. His academic foundation includes: PhD in Public Policy, University of California, Berkeley (2013) MA in International and Development Economics, Yale University (2004) BS in Industrial & Labor Relations, Cornell University (2003) Chalfin's research program centers on policing economics, officer behavioral preferences, place-based crime prevention strategies, and victimization determinants. He concurrently advances methodological rigor in social science through innovations in measurement error correction, spatial crime concentration metrics, and administrative data linkage techniques. His empirical approach consistently bridges theoretical criminology with practical policy evaluation. Recent publications reveal evolving research trajectories across bias-motivated violence measurement during pandemics, low-cost gun violence interventions, racial disparities in traffic fatalities, and methodological improvements for policy analysis. This body of work demonstrates sustained commitment to evidence-based criminal justice solutions through experimental and quasi-experimental designs. His ongoing collaboration with the University of Chicago Crime Lab exemplifies integration between academic research and real-world crime laboratory operations, focusing on scalable public safety innovations.









