His research exploits variation generated by programs and policies in developing countries to illuminate the underlying causes for low and slowly changing human capital levels. Ongoing work evaluates interventions in road safety, maternal and child health and water and sanitation. In education, his work focuses on evaluations of interventions to improve access and quality of schooling through technology, double shifting, private-public partnerships and conditional cash transfers. He is a non-resident fellow at the Center for Global Development. He holds a Phd in economics from Harvard University.