“...Propensity score matching estimators (Rosenbaum and Rubin (1983)) are widely used in evaluation research to estimate average treatment effects. In this...”

“...In Abadie and Imbens (2006), it was shown that simple nearest-neighbor matching estimators include a conditional bias term that converges to zero at a rate...”

“...Recently there has been a surge in econometric work focusing on estimating average treatment effects under various sets of assumptions. One strand of this...”

“...I review recent work in the statistics literature on instrumental variables methods from an econometrics perspective. I discuss some of the older, economic,...”

“...Most questions in social and biomedical sciences are causal in nature: what would happen to individuals, or to groups, if part of their environment were...”

“...This paper uses control variables to indentify and estimate models with nonseparable, multidimensional disturbances. Triangular simultaneous equations models...”

“...We are interested in estimating the average effect of a binary treatment on a scalar outcome. If assignment to the treatment is exogenous or unconfounded, that...”

“...Estimation of average treatment effects under unconfounded or ignorable treatment assignment is often hampered by lack of overlap in the covariate...”

“...In this paper we develop two nonparametric tests of treatment effect heterogeneity. The first test is for the null hypothesis that the treatment has a zero...”