Work in Progress

• "Credit Crunches and Credit Allocation in a Model of Entrepreneurship," with Marco Bassetto and Marco Cagetti.
• "Entrepreneurs and Fluctuations" with Francisco Barillas and Marco Cagetti.
• "Saving Motives After Retirement" with Eric French and John Jones.
• "Entrepreneurial Decisions: A Structural Approach" with Jeff Campbell.

Papers

• "Why Do the Elderly Save? The Role of Medical Expenses" with Eric French and John Jones, NBER working paper no. 15149, July 2009. A previous version of this paper was circulated as "Differential Mortality, Uncertain Medical Expenses, and the Saving of Elderly Singles," NBER working paper no. 12554, October 2006.
• "Social Security and Fertility" with Michele Boldrin and Larry Jones, NBER working paper no. 11146, February 2005.

Published work

• "Life Expectancy and Old Age Savings" with Eric French and John B. Jones, NBER working paper no. 14653, January 2009, American Economic Review, Papers and Proceedings, forthcoming, May 2009.
• "A Conversation with 590 Nascent Entrepreneurs" with Jeff Campbell, Annals of Finance, special issue on Entrepreneurship, co-edited with Ann Villamil, April 2009, vol. 5, pages 313-327.
• "Estate Taxation, Entrepreneurship, and Wealth" with Marco Cagetti, American Economic Review, March 2009, vol. 99(1), pages 85-111. (A previous version of this paper was circulated as: Taxes, Entrepreneurship, and Wealth" Federal Reserve Bank of Minnepolis Staff Report, n. 340, July 2004.)
• Wealth inequality: data and models" with Marco Cagetti. Macroeconomic Dynamics, 2008, vol. 12, special supplement S2 on Inequality edited by R. Townsend, pages 285-313.
• "Evidence on Entrepreneurs in the United States: Data from the 1989-2004 Survey of Consumer Finances," with Phil Doctor and Spencer D. Krane, Federal Reserve Bank of Chicago Economic Perspectives, Fourth Quarter 2007.
• "Entrepreneurship, Frictions, and Wealth" with Marco Cagetti, Journal of Political Economy, October 2006, vol. 114, n. 5, pages 835-870. Lead article. Slides.
• "Wealth Inequality and Intergenerational Links" . Review of Economic Studies, July 2004, vol. 71, n. 3, pages 743-768. Slides.
• "Saving and Pension Reform in General Equilibrium Models," with Selahattin Imrohoroglu and Thomas J. Sargent, Oxford Review of Economic Policy, 2001, vol. 17, pp. 20-39, special issue on Savings, edited by Orazio Attanasio and James Bank.
• "Income Inequality and Redistribution in Five Countries," with Liqian Ren and Chao Wei, Federal Reserve Bank of Chicago Economic Perspectives, Second Quarter 2000.
• "Projected U.S. Demographics and Social Security" with Selahattin Imrohoroglu and Thomas J. Sargent, Review of Economic Dynamics, 1999 vol. 2 n. 3, pages 575-615.