I investigate how changes in fees paid to Medicaid physicians affect take-up among children in low-income families. The existing literature suggests that the low level of Medicaid fee payments to physicians reduces their willingness to see Medicaid patients, thus creating an access-to-care...

I investigate how changes in fees paid to Medicaid physicians affect take-up among children in low-income families. The existing literature suggests that the low level of Medicaid fee payments to physicians reduces their willingness to see Medicaid patients, thus creating an access-to-care...

We randomly assign more than 6,000 students from 150 primary schools in Bangladesh to work on math assignments in one of three settings: individually, in groups with random schoolmates, or in groups with friends. The groups consist of four people and are balanced by average cognitive ability and...

We study the causal impact of network centrality on educational outcomes using field experiments in primary schools in Bangladesh. After obtaining information on friendship networks, we randomly allocate students into groups and give them individual and group assignments. We find that groups...

We study the effects of school autonomy using a randomized natural experiment in Seoul. Private and public schools subject to the equalization policy in Seoul admit students assigned randomly to them, receive equal government funding, charge identical fees, and use similar curricula, while...

Using data on the U.S., we study the effects of employer-provided health insurance on dynamic employment substitution between 1990 and 2007 by exploiting the interindustry variation in health care coverage. We find that industries with a high health benefit structure in 1990 have experienced...

We randomly assign more than 6,000 students from 150 primary schools in Bangladesh to work on math assignments in one of three settings: individually, in groups with random schoolmates, or in groups with friends. The groups consist of four people and are balanced by average cognitive ability and...

We study the causal impact of network centrality on educational outcomes using field experiments in primary schools in Bangladesh. After obtaining information on friendship networks, we randomly allocate students into groups and give them individual and group assignments. We find that groups...

Students' out-of-school activities and time use can play a crucial role in facilitating school effectiveness. Using data from Seoul, South Korea, where the assignment of students into schools is random, we show that single-sex high schools affect the out-of-school activities of boys only, while...