We use the 2003/2004 Medical Expenditure Panel Survey in conjunction with the 2002 National Health Interview Survey to test for adverse selection in the private U.S. health insurance markets. The key idea is to test whether individuals who are more exposed to health risks also buy insurance...

We use the 2003/2004 Medical Expenditure Panel Survey in conjunction with the 2002 National Health Interview Survey to test for adverse selection in the private U.S. health insurance markets. The key idea is to test whether individuals who are more exposed to health risks also buy insurance...

Does asymmetric information matter in insurance markets? Recent evidence on the automobile insurance market suggests not, rejecting the separating equilibnum of the Rothschild-Stiglitz model. However, I show that a two-penod version of that model can sustain a pooling equilibrium with experience...