Journal
JOURNAL OF ECONOMETRICS
Volume 208, Issue 2, Pages 468-486Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jeconom.2018.10.004
Keywords
Sharp regression discontinuity; Fuzzy regression discontinuity; Treatment effect heterogeneity
Categories
Funding
- Ministry of Science and Technology of Taiwan, Taiwan [MOST103-2628-H-001-001-MY4]
- Career Development Award of Academia Sinica, Taiwan [AS-CDA-104-H01]
- Institute for Social Sciences of the University of California, Davis
- Hellman Fellows Award
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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. (C) 2018 Elsevier B.V. All rights reserved.
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