Identification and Estimation Using Heteroscedasticity Without Instruments: The Binary Endogenous Regressor Case
Arthur Lewbel ()
No 927, Boston College Working Papers in Economics from Boston College Department of Economics
Lewbel (2012) provides an estimator for linear regression models containing an endogenous regressor, when no outside instruments or other such information is available. The method works by exploiting model heteroscedasticity to construct instruments using the available regressors. Some authors have considered the method in empirical applications where an endogenous regressor is binary (e.g., endogenous Diff-in-Diff or endogenous binary treatment models), without proving validity of the estimator in that case. The present paper shows that the assumptions required for Lewbel’s estimator can indeed be satisfied when an endogenous regressor is binary.
Keywords: Simultaneous systems; linear regressions; endogeneity; identification; heteroscedasticity; binary regressors; dummy regressors; linear probability model; logit; probit (search for similar items in EconPapers)
JEL-codes: C35 C36 C30 C13 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-dcm, nep-ecm and nep-ore
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Journal Article: Identification and estimation using heteroscedasticity without instruments: The binary endogenous regressor case (2018)
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