Publications

Preference Heterogeneity in Insurance Markets: Explaining a Puzzle
2008. American Economic Review Papers and Proceedings, May (with David Cutler and Kathleen McGarry).

What Did Medicare Do? The Initial Impact of Medicare on Mortality and Out of Pocket Medical Spending
Forthcoming. Journal of Public Economics (with Robin McKnight).

The Interaction of Public and Private Insurance: Medicaid and the Long-Term Insurance Market
Forthcoming. American Economic Review (with Jeffrey Brown).

Why Is the Market for Long Term Care Insurance so Small
2007. Journal of Public Economics 91(10): 1967-1991, (with Jeffrey Brown).

Medicaid Crowd-Out of Private Long Term Care Insurance Demand: Evidence from the Health and Retirement Survey
2007. Tax Policy and the Economy, 21:1-34  (with Jeffrey Brown and Norma Coe).

The Aggregate Effects of Health Insurance: Evidence from the Introduction of Medicare
2007. Quarterly Journal of Economics, 122(1): 1-37.

Multiple dimensions of private information: evidence from the long-term care insurance market
2006.  American Economic Review September 96(4): 938-958 (with Kathleen McGarry).

Did Medicare Induce Pharmaceutical Innovation?
2006.  American Economic Review Papers and Proceedings, 96(2): 103-107 (with Daron Acemoglu,
David Cutler, and Joshua Linn).

Dynamic Inefficiencies in Insurance Markets: Evidence from Long-Term Care Insurance
2005.  American Economic Review Papers and Proceedings, 95:224-228 (with Kathleen McGarry and Amir Sufi).

Minimum Standards, Insurance Regulation and Adverse Selection: Evidence from the Medigap Market
2004.  Journal of Public Economics 88(12): 2515-2547.

Static and Dynamic Effects of Health Policy: Evidence from the Vaccine Industry
2004.  Quarterly Journal of Economics 119 (2): 527-564.

Adverse Selection in Insurance Markets: Policyholder Evidence from the U.K. Annuity Market
2004.  Journal of Political Economy 112(1) Part 1: 183-208, with James Poterba.

The Interaction of Partial Public Insurance Programs and Residual Private Insurance Markets: Evidence from the US Medicare Program
2004. Journal of Health Economics, 23(1): 1-24.

The effect of tax subsides to employer-provided supplementary health insurance: evidence from Canada
2002. Journal of Public Economics 84(3): 305-340.

Selection Effects in the United Kingdom Indvidual Annuities Market
2002. The Economic Journal 112(476): 28-50, with James Poterba.