We propose new methods to model behavior and conduct welfare analysis in complex environments where some choices are unlikely to reveal preferences. We develop a mixture-of-experts model that incorporates heterogeneity in consumers' preferences and in their choice processes. We also develop a...

We find that long-term exposure to fine-particulate air pollution (PM2.5) degrades health and human capital among older adults by increasing their risk of developing Alzheimer's disease and related dementias. We track U.S. Medicare beneficiaries' cumulative residential exposures to PM2.5 and...

We analyze Medicare Part D's net effect on elderly out-of-pocket (OOP) costs and use of prescription drugs using a dataset containing 1.4 billion prescription records from Wolters Kluwer Health (WKH). These data span the period December 2004-December 2007 and include pharmacy customers whose age...

Theory indicates that internally-differentiated professional partnerships can promote matching between heterogeneous consumers and professionals, particularly when consumers have imperfect information or markets have barriers to referrals between firms. We test this in obstetrics markets,...

This paper describes three prototypical systems of therapeutic reference pricing (RP) for pharmaceuticals -- Germany, the Netherlands, and New Zealand -- and examines their effects on the availability of new drugs, reimbursement levels, manufacturer prices and out-of-pocket surcharges to...