Instrumental variables
In: Econometric Society monographs in quantitative economics
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In: Econometric Society monographs in quantitative economics
In: The Economic Journal, Band 96, Heft 381, S. 254
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In: Journal of political economy, Band 132, Heft 7, S. 2274-2303
ISSN: 1537-534X
In: Journal of Political Economy (forthcoming)
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In: American journal of political science: AJPS, Band 35, Heft 4, S. 777
ISSN: 0092-5853
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In: IZA Discussion Paper No. 8048
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In: American journal of political science, Band 35, Heft 3, S. 777
ISSN: 1540-5907
In: American economic review, Band 103, Heft 3, S. 550-556
ISSN: 1944-7981
In many economic models, objects of interest are functions which satisfy conditional moment restrictions. Economics does not restrict the functional form of these models, motivating nonparametric methods. In this paper we review identification results and describe a simple nonparametric instrumental variables (NPIV) estimator. We also consider a simple method of inference. In addition we show how the ability to uncover nonlinearities with conditional moment restrictions is related to the strength of the instruments. We point to applications where important nonlinearities can be found with NPIV and applications where they cannot.
In: Mathematical social sciences, Band 30, Heft 3, S. 322-323
In: NBER Working Paper No. w19983
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