"This paper surveys a recent body of research by Carneiro, Hansen, and Heckman [Carneiro, P., K. Hansen, and J.J. Heckman, 2001, Fall. Removing the veil of ignorance in assessing the distributional impacts of social policies. Swedish Economic Policy Review 8 (2), 273–301., Carneiro, P., K. Hansen, and J.J. Heckman, 2003, May. Estimating distributions of treatment effects with an application to the returns to schooling and measurement of the effects of uncertainty on college choice. International Economic Review 44 (2), 361–422. 2001 Lawrence R. Klein Lecture], Cunha and Heckman [Cunha, F. and J.J. Heckman, 2006. The evolution of earnings risk in the US economy. Presented at the 9th World Congress of the Econometric Society, London], Cunha, Heckman, and Navarro [Cunha, F., J.J. Heckman, and S. Navarro, 2004, March. Separating heterogeneity from uncertainty in an aiyagari–laitner economy. Presented at the Goldwater Conference on Labor Markets, Arizona., Cunha, F., J.J. Heckman, and S. Navarro, 2005, April. Separating uncertainty from heterogeneity in life cycle earnings, The 2004 Hicks Lecture. Oxford Economic Papers 57 (2), 191–261., Cunha, F., J.J. Heckman, and S. Navarro, 2006. Counterfactual analysis of inequality and social mobility. In S.L. Morgan, D.B. Grusky, and G.S. Fields (Eds.), Mobility and Inequality: Frontiers of Research in Sociology and Economics, Chapter 4, pp. 290–348. Stanford, CA: Stanford University Press], Heckman and Navarro [Heckman, J.J. and S. Navarro, 2007, February. Dynamic discrete choice and dynamic treatment effects. Journal of Econometrics 136 (2), 341–396] and Navarro [Navarro, S., 2005. Understanding Schooling: Using Observed Choices to Infer Agent's Information in a Dynamic Model of Schooling Choice When Consumption Allocation is Subject to Borrowing Constraints. Ph.D. Dissertation, University of Chicago, Chicago, IL] that identifies and estimates the ex post distribution of returns to schooling and determines ex ante distributions of returns on which agents base their schooling choices. We discuss methods and evidence, and state a fundamental identification problem concerning the separation of preferences, market structures and agent information sets. For a variety of market structures and preference specifications, we estimate that over 50% of the ex post variance in returns to college are forecastable at the time agents make their schooling choices."

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