This paper modifies the optimal penalty analysis by incorporating investment incentives with external benefits. In the models examined, the recommendation that the optimal penalty should internalize the marginal social harm is no longer valid as a general rule. We focus on antitrust...

This paper revisits the relationship between nurse staffing and quality of care in nursing homes using an instrumental variables approach. Most prior studies rely on cross-sectional evidence, which renders causal inference problematic and policy recommendations inappropriate. We exploit...

This paper studies search and prices in the Medigap insurance market. Using data on market shares, insurer characteristics, and plan prices, we estimate to what extent prices can be explained by search and product differentiation. In our model, consumers search across Medigap insurers for prices...

We extend the economic analysis of negligence and intervening causation to "two-sided causation" scenarios. In the two-sided causation scenario the effectiveness of the injurer's care depends on some intervention, and the risk of harm generated by the injurer's failure to take care depends on...

This paper explores the effects of public health insurance expansions on hospitals’ decisions to adopt medical technology. Specifically, we test whether the expansion of Medicaid eligibility for pregnant women during the 1980s and 1990s affects hospitals’ decisions to adopt neonatal...