TY - RPRT AU - Busso, Matias AU - DiNardo, John AU - McCrary, Justin TI - New Evidence on the Finite Sample Properties of Propensity Score Matching and Reweighting Estimators PY - 2009/Feb/ PB - Institute of Labor Economics (IZA) CY - Bonn T2 - IZA Discussion Paper IS - 3998 UR - https://www.iza.org/index.php/publications/dp3998 AB - Currently available asymptotic results in the literature suggest that matching estimators have higher variance than reweighting estimators. The extant literature comparing the finite sample properties of matching to specific reweighting estimators, however, has concluded that reweighting performs far worse than even the simplest matching estimator. We resolve this puzzle. We show that the findings from the finite sample analyses are not inconsistent with asymptotic analysis, but are very specific to particular choices regarding the implementation of reweighting, and fail to generalize to settings likely to be encountered in actual empirical practice. In the DGPs studied here, reweighting typically outperforms propensity score matching. KW - semiparametric efficiency KW - propensity score KW - treatment effects ER -