期刊名称：Discussion Papers of the Department of Economics, University of St.Gallen = Diskussionspapiere der Volkswirtschaftlichen Abteilung der Universität St.Gallen
出版年度：2002
卷号：2002
出版社：Universität St. Gallen
摘要：Propensity score matching is a nonparametric technique frequently used for estimating average treatment effects. Yet its applicability is not confined to treatment evaluation. In this paper the propensity score property is generalized to the setting of selection on unobservables. It is shown that propensity score matching can be used to decompose effects due to observables and due to unobservables; which can be used, for example, to analyze racial or sexual discrimination. Furthermore, the generalized propensity score property justifies the use of propensity score matching in difference-in-difference treatment evaluation.
