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Testing treatment effect heterogeneity in regression discontinuity designs

Yu-Chin Hsu () and Shu Shen

Journal of Econometrics, 2019, vol. 208, issue 2, 468-486

Abstract: Treatment effect heterogeneity is frequently studied in regression discontinuity (RD) applications. This paper proposes, under the RD setup, formal tests for treatment effect heterogeneity among individuals with different observed pre-treatment characteristics. The proposed tests study whether a policy treatment (1) is beneficial for at least some subpopulations defined by pre-treatment covariate values, (2) has any impact on at least some subpopulations, and (3) has a heterogeneous impact across subpopulations. The empirical section applies the tests to study the impact of attending a better high school and discovers interesting patterns of treatment effect heterogeneity neglected by previous studies.

Keywords: Sharp regression discontinuity; Fuzzy regression discontinuity; Treatment effect heterogeneity (search for similar items in EconPapers)
JEL-codes: C21 C31 (search for similar items in EconPapers)
Date: 2019
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