Most of my papers are available from either the Urban Institute or RePEc.

Here are direct links to some of my work:

• Erratum and discussion of propensity score reweighting Stata Journal 8(4). (Last prepublication draft, December 1, 2008.)
• Trends in Income Inequality, Volatility, and Mobility Risk Paper presented at the IRISS 10th Anniversary Workshop in Differdange, Luxembourg, October 25, 2008.
• Income Inequality, Volatility, and Mobility Risk Handout accompanying June 3 Forum on Income Volatility
• Measuring Trends in Income Variability (with Seth Zimmerman, May 2008) Working paper
• Discussion of "Trends in Individual Earnings Variability and Household Income Variability Over the Past 20 Years" (Dahl, DeLeire, and Schwabish; draft of Jan 3, 2008). Slides for presentation at AEA, January 4, 2008, New Orleans LA. The paper discussed is available from the CBO website.
• Causal inference with observational data Stata Journal 7(4): 507-541. (Published January 29, 2008) (Last prepublication draft, December 12, 2007.)
• What Do Nonprofits Maximize? Nonprofit Hospital Service Provision and Market Ownership Mix (with Jill Horwitz). NBER working paper version, July 2007.
• Low-Income Workers and Their Employers (with Gregory Acs). Prepared for the May 23, 2007, Urban Institute Roundtable "Public and Private Roles in the Workplace: What Are the Next Steps in Supporting Working Families?"
• Gender Gaps in Math and Reading Gains During Elementary and High School by Race and Ethnicity (with Laura LoGerfo and Duncan Chaplin). Report, March 2, 2007.
• An Assessment of the Income and Expenses of America's Low-Income Families Using Survey Data from the National Survey of America's Families (with Gregory Acs). Prepared for the National Poverty Center's May 2006 conference on Consumption, Income, and the Well-Being of Families and Children; version of September 28, 2006
• Understanding Changes in Child Poverty Over the Past Decade. Assessing the New Federalism Discussion Paper No. 06-02, May 11, 2006.
• Achievement Gains in Elementary and High School (with Laura LoGerfo and Sean F. Reardon). Report, March 16, 2006.
• Working to Make Ends Meet: Understanding the Income and Expenses of America's Low-Income Families (with Greg Acs). Low Income Working Families Papers, No. 2 (UI: Washington, DC, Sept 2005).
• Tax-Transfer Policy and Labor-Market Outcomes (with Nada Eissa). American Economic Review 95(2), May 2005.
• How Have Households with Children Fared in the Job Market Downturn? (with Greg Acs and Harry Holzer). No. A-67 in Series, "New Federalism: Issues and Options for States" (UI: Washington, DC, April 29, 2005).
• Economic Determinants of Fertility Behavior. Dissertation, University of Michigan. Accepted November 2004.
• The Welfare Implications of Increasing Disability Insurance Benefit Generosity (with John Bound, Julie Berry Cullen, and Lucie Schmidt). The Journal of Public Economics Vol. 88, Issue 12 (North-Holland Pub. Co.: Amsterdam, December 2004) pp.2487-2514.
  • Prior (working paper) version: "The Welfare Implications of Increasing Disability Insurance Benefit Generosity"
• Tracking the Household Income of SSDI and SSI Applicants (with John Bound and Richard V. Burkhauser). In Polachek, Solomon (ed.). Worker Well-being and Public Policy: Research in Labor Economics. Vol 22. (Elsevier JAI Press: Oxford, 2003) pp.113-158.
  • Prior working paper version: "Tracking the Household Income of Those Who Apply for Federal Disability Insurance"