Most work on social interactions studies a single, composite effect of interactions within a group. Yet in the case of sexual initiation, there are two distinct social mechanisms-peer-group norms and partner availability-with separate effects and different potential interventions. Here I develop...

The hospital industry is one of the most important industries in the U.S., and industry structure can have profound effects on the functioning of markets. Using county-level panel data, we study the effect of public subsidies from the Hospital Survey and Construction Act of 1946, known as the...

The hospital industry is one of the most important industries in the U.S., and industry structure can have profound effects on the functioning of markets. Using county-level panel data, we study the effect of public subsidies from the Hospital Survey and Construction Act of 1946, known as the...