effects of officer experience on neighborhood crime. Equalizing officer seniority across districts would reduce violent crime … rate by 4.6 percent and significantly decrease inequality in crime, discretionary arrests, and officer use of force across …

variation in the threat of crime within small homogenous groupings of homes, and we use the timing of sex offenders' arrivals to … offenders or view living near an offender as having costs exclusive of crime risk …

Why do crime rates differ greatly across neighborhoods and schools? Comparing youth who were assigned to opposite sides … neighborhoods increases total crime. We then show that these youth are more likely to be arrested for committing crimes together … - to be "partners in crime". Our results suggest that direct peer interaction is a key mechanism for social multipliers in …

and high school. More importantly, we estimate that a five percentage point increase in school and neighborhood crime … are due to attending school with crime-prone peers, rather than living in the same neighborhood …