# Publications

Choice–Based Sampling – Inference and Optimality. Submitted.

. Sources of Identification in Evaluation Models. Submitted. PDF

. . . Matching on the Estimated Propensity Score. Submitted. PDF

. . . . . A Martingale Representation for Matching Estimators. Journal of the American Statistical Association. Forthcoming. PDF

. . . Bias-Corrected Matching Estimators for Average Treatment Effects. Journal of Business and Economic Statistics. 2011;29 (1) :1-11. PDF

. An Economist's Perspective on Shadish (2010) and West and Thoemmes (2010). Psychological Methods. 2010;15 (1) :47-55. PDF

. . Choosing Instrumental Variables in Conditional Moment Restriction Models. Journal of Econometrics. 2009;152 (1) :28-36. PDF

. Complementarity and Aggregate Implications of Assortative Matching: A Nonparametric Analysis. 2009.Abstract PDF

. Estimation and Inference for Generalized Full and Partial Means and Average Derivatives. 2009.Abstract PDF

. Better LATE Than Nothing: Some Comments on Deaton (2009) and Heckman and Urzua (2009). 2009.Abstract PDF

. Dealing with Limited Overlap in Estimation of Average Treatment Effects. Biometrika. 2009;96 (1) :187-199. PDF

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