Optimal Policy and New Dynamic Public Finance Risk Sharing, Inequality and Fertility (May 2010) with Larry Jones and Roozbeh Hosseini Supplementary Appendix (May 2010) An older version as NBER working paper No. 15111 Designing Optimal Social Security(Coming Soon) with Maxim Troshkin Financial Markets and Macroeconomics Adverse Selection, Reputation and Sudden Collapses in Secondary Loan Markets (June 2010) with V. V. Chari and Ariel Zetlin-Jones Aggregate Fluctuations with Adverse Selection in Credit Markets (Sep 2009) with Ariel Zetlin-Jones Moral Hazard, Reputation, and Fragility in Credit Markets (Apr 2009) with V. V. Chari and Ariel Zetlin-Jones |