Motivated by widely publicized concerns that there are "too many" plans, we structurally estimate (and validate) an equilibrium model of the Medicare Part D market to study the welfare impacts of two feasible, similar-sized approaches for reducing choice. One reduces the maximum number of firm...

In several markets, firms compete not for consumer expenditure but instead for consumer attention. We model and characterize how households allocate their scarce attention in arguably the largest market for attention: the Internet. Our characterization of household attention allocation operates...

We study the effect of hospital adoption of electronic medical records (EMRs) on health outcomes, particularly patient safety indicators (PSIs). We find evidence of a positive impact of EMRs on PSIs via decision support rather than care coordination. Consistent with this mechanism, we find an...

This paper presents a dynamic political economy model of community development. In each period, a community invests in a local public good. The community can grow, with new housing supplied by competitive developers. To finance investment, the community can tax residents and issue debt. In each...

We present a theory of endogenous fiscal policy and growth. Fiscal policy -- debt, income tax, spending on local public goods and public investment -- is determined through legislative bargaining. Economic growth depends directly on public investment, private investment in human capital and, via...

Public school choice programs give households a free choice of public school and provide schools incentives to compete for students. Proponents of these programs argue that by the usual market logic, choice and competition will improve the quality of the education that schools provide. Critics...