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Local indirect least squares and average marginal effects in nonseparable structural systems

Listed author(s):
  • Schennach, Susanne
  • White, Halbert
  • Chalak, Karim

We study the scope of local indirect least squares (LILS) methods for nonparametrically estimating average marginal effects of an endogenous cause X on a response Y in triangular structural systems that need not exhibit linearity, separability, or monotonicity in scalar unobservables. One main finding is negative: in the fully nonseparable case, LILS methods cannot recover the average marginal effect. LILS methods can nevertheless test the hypothesis of no effect in the general nonseparable case. We provide new nonparametric asymptotic theory, treating both the traditional case of observed exogenous instruments Z and the case where one observes only error-laden proxies for Z.

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File URL: http://www.sciencedirect.com/science/article/pii/S0304407611002223
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Article provided by Elsevier in its journal Journal of Econometrics.

Volume (Year): 166 (2012)
Issue (Month): 2 ()
Pages: 282-302

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Handle: RePEc:eee:econom:v:166:y:2012:i:2:p:282-302
DOI: 10.1016/j.jeconom.2011.09.041
Contact details of provider: Web page: http://www.elsevier.com/locate/jeconom

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