Assistant Professor of Economics
University of Pennsylvania
Separating Heterogeneity from Uncertainty in Life Cycle Earnings, Oxford Economic Papers, Vol. 57(2), pp. 191-261, April/2005, (with James J. Heckman and Salvador Navarro).
Counterfactual Analysis of Inequality and Social Mobility, in G. Fields, D. Grusky, and S. Morgan, eds., Frontiers of Research from Sociology and Economics, Chapter 4, pp. 290-346, 2006, Palo Alto: Stanford University Press, (with James J. Heckman and Salvador Navarro).
Interpreting the Evidence on Life Cycle Skill Formation, in E.Hanushek and F.Welch, eds., The Handbook of Economics of Education, Chapter 12, pp. 697-812, 2006, Amsterdam: North Holland, (with James J. Heckman, Lance Lochner and Dimitriy Masterov).
The Technology of Skill Formation, American Economic Review P&P, Vol. 97(2), pp. 31-47, May/2007, (with James J. Heckman).
The Identification and Economic Content of Ordered Choice Models with Stochastic Cutoffs, International Economic Review, Vol. 48(4), pp. 1273-1309, November/2007, (with James J. Heckman and Salvador Navarro).
Identifying and Estimating the Distribution of Ex Ante and Ex Post Returns to Schooling: A Survey of Recent Developments, Labour Economics, Vol. 14(6), pp. 870-893, December/2007, (with James J. Heckman).
A New Framework for the Analysis of Inequality, Macroeconomic Dynamics, Vol. 12(S2), pp. 315-354, September/2008 (with James J. Heckman).
Formulating, Identifying, and Estimating the Technology for the Formation of Skills, Journal of Human Resources, Vol. 43(4), pp. 738-782, Fall/2008, (with James J. Heckman).
The Economics and Psychology of Inequality and Human Development, Journal of the European Economic Association, Vol. 7(2-3), pp. 1-48, Apr-May/2009, (with James J. Heckman).
Early Education and its Importance in Reducing Violence, in F. Giambiagi, R. Henriques, S. Pessoa, and F. Velloso, eds., Educação Básica no Brasil: Construindo um Futuro Melhor, Chapter 5, pp. 95-116, 2009, Rio de Janeiro: Elsevier (with Aloisio P. de Araújo, James J. Heckman and Rodrigo L. de Moura).
Crossing the Finish Line: A Review Article, Journal of Human Capital, Vol. 3(4), pp. 354-378, Winter/2009.
Human Capital Formation in Childhood and Adolescence, CESifo Journal for Institutional Comparisons, Vol. 7(4), pp. 22-28, Winter/2009, (with James J. Heckman).
Investing in Our Young People, in A. J. Reynolds, A. Rolnick, M. M. Englund, & J. Temple, eds., Cost-effective Early Childhood Programs in the First Decade: A Human Capital Integration, Chapter 18, pp. 381-414, 2010, New York: Cambridge University Press (with James Heckman).
Estimating the Technology of Cognitive and Non-Cognitive Skill Formation, Econometrica, Vol. 78(3), pp. 883-931, May/2010, (with James J. Heckman and Susanne M. Schennach).
Recent Developments in the Estimation of Production Functions of Skills, Fiscal Studies, Vol. 32(2), pp. 297-316, June/2011.
Returns to Skills and the College Premium, Journal of Money, Credit, and Banking, Vol. 43(IS1), pp. 39-86, August/2011, (with Fatih Karahan and Ilton Soares).
The Evolution of Inequality, Heterogeneity, and Uncertainty in Labor Earnings in the U.S. Economy, (with James J. Heckman).
Child Endowments, Parental Investments and the Development of Human capital: Evidence from Siblings, (with Anna Aizer).
Fertility and Parental Investments in Human Capital.
Maternal Beliefs and the Technology of Skill Formation, (with Anton Badev).
Work in Progress:
Investments in the Human Capital of Children in Village Economies, (with Robert Townsend and Fan Wang).
The Impact of Social Security Reform on Occupational and Retirement Behavior: A Quantitative Assessment for Brazil, (with Marcelo Dos Santos and Pedro C. Ferreira).
A Framework for the Analysis of Socio-Economic Networks, (with Jere Behrman and Hans-Peter Kohler).