The standard economic model of police stops implies that the contraband hit rate should rise when the number of stops or searches per officer falls, ceteris paribus. We provide empirical corroboration of such optimizing models of police behavior by examining changes in stops and frisks around...

Early childhood interventions aim to promote skill acquisition and poverty reduction. While their short-term success is well established, research on longer-term effectiveness is scarce, particularly in LDCs. We present results of a randomized scalable intervention in India, that affected...

Mobile phone-based informational programs are widely used worldwide, though there is little consensus on how effective they are at changing behavior. We present causal evidence on the effects of six agricultural information programs delivered through text messages in Kenya and Rwanda. The...