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Author: Martinez-Iriarte, Julian
Resulting in 1 citation.
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Martinez-Iriarte, Julian Sun, Yixiao |
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Identification and Estimation of Unconditional Policy Effects of an Endogenous Binary Treatment Working Paper, Department of Economics, University of California - San Diego, 2020 Cohort(s): NLSY79 Publisher: Department of Economics, University of California, San Diego Keyword(s): College Enrollment; Marginal Treatment Effect; Modeling, Instrumental Variables; Statistical Analysis; Wages Permission to reprint the abstract has not been received from the publisher. This paper studies the identification and estimation of unconditional policy effects when the treatment is binary and endogenous. We first characterize the asymptotic bias of the unconditional regression estimator that ignores the endogeneity and elaborate on the channels that the endogeneity can render the unconditional regressor estimator inconsistent. We show that even if the treatment status is exogenous, the unconditional regression estimator can still be inconsistent when there are common covariates affecting both the treatment status and the outcome variable. We introduce a new class of marginal treatment effects (MTE) based on the influence function of the functional underlying the policy target. We show that an unconditional policy effect can be represented as a weighted average of the newly defined MTEs over the individuals at the margin of indifference. Point identification is achieved using the local instrumental variable approach. Furthermore, the unconditional policy effects are shown to include the marginal policy-relevant treatment effect in the literature as a special case. Methods of estimation and inference for the unconditional policy effects are provided. In the empirical application, we estimate the effect of changing college enrollment status, induced by higher tuition subsidy, on the quantiles of the wage distribution. |
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Bibliography Citation
Martinez-Iriarte, Julian and Yixiao Sun. "Identification and Estimation of Unconditional Policy Effects of an Endogenous Binary Treatment." Working Paper, Department of Economics, University of California - San Diego, 2020. |