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Identification and Estimation of Nonseparable Triangular Equations with Mismeasured Instruments

Shaomin Wu

arXiv 21 Apr 2024 · Econometrics

arXiv:2404.13735 · PDF · DOI · OpenAlex · Extracted main text

Abstract

In this paper, I study the nonparametric identification and estimation of the marginal effect of an endogenous variable $X$ on the outcome variable $Y$, given a potentially mismeasured instrument variable $W^*$, without assuming linearity or separability of the functions governing the relationship between observables and unobservables. To address the challenges arising from the co-existence of measurement error and nonseparability, I first employ the deconvolution technique from the measurement error literature to identify the joint distribution of $Y, X, W^*$ using two error-laden measurements of $W^*$. I then recover the structural derivative of the function of interest and the "Local Average Response" (LAR) from the joint distribution via the "unobserved instrument" approach in Matzkin (2016). I also propose nonparametric estimators for these parameters and derive their uniform rates of convergence. Monte Carlo exercises show evidence that the estimators I propose have good finite sample performance.

Citation extraction

21
references
56
in-text mentions
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distinct cited
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main-text words

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Most heavily cited references

The works this paper leans on most, across its whole bibliography — not restricted to papers in our corpus. Ranked by composite intensity, which combines how often a work is mentioned, how many sections mention it, and how much of that falls in the main text rather than the appendix.

ReferenceIntensityMentionsSectionsMain text
1Schennach, White and Chalak (2012) Local indirect least squares and average marginal effects in nonseparable structural systems0.87452100%
2Schennach (2004) Nonparametric regression in the presence of measurement error0.8558562%
3Schennach (2004) Estimation of nonlinear models with measurement error0.8434475%
4Matzkin (2016) On independence conditions in nonseparable models: Observable and unobservable instruments0.84333100%
5Song, Schennach and White (2015) Estimating nonseparable models with mismeasured endogenous variables0.73732100%
6Imbens and Newey (2009) Identification and estimation of triangular simultaneous equations models without additivity0.69371100%
7Andrews (1995) Nonparametric kernel estimation for semiparametric models0.64441100%
8Altonji and Matzkin (2005) Cross section and panel data estimators for nonseparable models with endogenous regressors0.64422100%
9Chesher (2003) Identification in nonseparable models0.64422100%
10Fan and Truong (1993) Nonparametric regression with errors in variables0.64422100%

Showing the top 10 of 21 scored citations.