Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/107556 
Year of Publication: 
2015
Series/Report no.: 
IZA Discussion Papers No. 8756
Publisher: 
Institute for the Study of Labor (IZA), Bonn
Abstract: 
This paper investigates the finite sample performance of a comprehensive set of semi- and nonparametric estimators for treatment and policy evaluation. In contrast to previous simulation studies which mostly considered semiparametric approaches relying on parametric propensity score estimation, we also consider more flexible approaches based on semi- or nonparametric propensity scores, nonparametric regression, and direct covariate matching. In addition to (pair, radius, and kernel) matching, inverse probability weighting, regression, and doubly robust estimation, our studies also cover recently proposed estimators such as genetic matching, entropy balancing, and empirical likelihood estimation. We vary a range of features (sample size, selection into treatment, effect heterogeneity, and correct/misspecification) in our simulations and find that several nonparametric estimators by and large outperform commonly used treatment estimators using a parametric propensity score. Nonparametric regression, nonparametric doubly robust estimation, nonparametric IPW, and one-to-many covariate matching perform best.
Subjects: 
treatment effects
policy evaluation
simulation
empirical Monte Carlo study
propensity score
semi- and nonparametric estimation
JEL: 
C21
Document Type: 
Working Paper

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