I am an Associate Professor of Criminology at the University of Pennsylvania.

I study public safety with a particular emphasis on police-led and place-based interventions.  I am a Co-Editor at the Journal of Policy Analysis & Management and an Associate Editor at the Journal of Quantitative Criminology and serve on editorial boards at Justice Quarterly and Criminology & Public Policy. 

​Prior to joining the faculty at Penn, I was a Research Director at the University of Chicago Crime Lab, where I remain an affiliate.  I am also a Senior Fellow at the Niskanen Center, a Research Associate at the National Bureau of Economic Research and a Faculty Fellow at Penn’s Crime and Justice Policy Lab. 

I completed my Ph.D. in Public Policy at UC Berkeley and hold a master's degree in International and Development Economics from Yale University.
​
A copy of my curriculum vitae can be viewed here.​  
My Google Scholar profile is here. ​