Andrew Papachristos is an Associate Professor in the Department of Sociology at Yale University whose research focuses on social networks, neighborhoods, street gangs, and interpersonal violence. Papachristos is also actively involved in the evaluation and implementation of several violence reduction strategies, most notably the Project Safe Neighborhoods and the Group Violence Reduction Strategy in Chicago. His writing has appeared in Foreign Policy, The American Journal of Sociology, The Annals of the American Academy of Social and Political Science, The American Journal of Public Health, The Journal of Urban Health, Criminology & Public Policy, Journal of Quantitative Criminology, and several edited volumes and other peer-reviewed journals. In addition, he is the most recent recipient of the American Society of Criminology’s Ruth Cavan “Young Scholar” award given each year to the most outstanding scholar who was granted a Ph.D. within the previous five years.