Broken or Fixed Effects
作者： Charles Gibbons , Juan Carlos Suárez Serrato , Michael Urbancic
DOI: 10.3386/W20342
关键词:
摘要: This paper provides empirical evidence of an established theoretical result: in the presence heterogeneous treatment eects, OLS is generally not a consistent estimator sampleweighted average eect (SWE). We propose two alternative estimators that do recover SWE group-specic heterogeneity. derive tests to detect eects and distinguish between SWE. document are common often statistically economically dierent from estimate by extending eight inuential
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