Randomized controlled trials are increasingly used to evaluate policies. How can we make these experiments as useful as possible for policy purposes? We argue greater use should be made of experiments that identify behavioral mechanisms that are central to clearly specified policy questions,...

This paper is the introductory chapter for the forthcoming NBER volume Controlling Crime: Strategies and Tradeoffs. The Great Recession has led to cuts in criminal justice expenditures, and the trend towards ever-higher incarceration rates that has been underway since the 1970s in the U.S....

The Moving to Opportunity (MTO) demonstration assigned housing vouchers via random lottery to low-income public housing residents in five cities. We use the exogenous variation in residential locations generated by the MTO demonstration to estimate the effects of neighborhoods on youth crime and...

We examine long-term neighborhood effects on low-income families using data from the Moving to Opportunity (MTO) randomized housing-mobility experiment. This experiment offered to some public-housing families but not to others the chance to move to less-disadvantaged neighborhoods. We show that...

One long-standing motivation for low-income housing programs is the possibility that housing affordability and housing conditions generate externalities, including on children’s behavior and long-term life outcomes. We take advantage of a randomized housing voucher lottery in Chicago in 1997...