We study peer effects in crime by analyzing co-offending networks. We first provide a credible estimate of peer effects … criminal from each network that reduces total crime by the largest amount.Using longitudinal data, we are able to compare the … disappeared over time, we show that the theoretical predicted crime reduction is close to what is observed in the real world. We …

environment. Using geocoded crime data and a novel source of within-city spatial and temporal variation in punishment severity, I … consistent with police treating enforcement effort and punishment severity as complementary. I also find that citywide crime and … punishment and suggests that certain types enforcement can be reduced without incurring large public safety costs …