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Wild Bootstrap for Instrumental Variables Regressions with Weak and Few Clusters

Wenjie Wang, Yichong Zhang

arXiv 31 Aug 2021 · Econometrics · publishedJournal of Econometrics (2024) · 6 citations (OpenAlex)

arXiv:2108.13707 · PDF · DOI · OpenAlex · Extracted main text

Abstract

We study the wild bootstrap inference for instrumental variable regressions in the framework of a small number of large clusters in which the number of clusters is viewed as fixed and the number of observations for each cluster diverges to infinity. We first show that the wild bootstrap Wald test, with or without using the cluster-robust covariance estimator, controls size asymptotically up to a small error as long as the parameters of endogenous variables are strongly identified in at least one of the clusters. Then, we establish the required number of strong clusters for the test to have power against local alternatives. We further develop a wild bootstrap Anderson-Rubin test for the full-vector inference and show that it controls size asymptotically up to a small error even under weak or partial identification in all clusters. We illustrate the good finite sample performance of the new inference methods using simulations and provide an empirical application to a well-known dataset about US local labor markets.

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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
1Autor, D., D. Dorn, and G. H. Hanson (2013) The China syndrome: Local labor market effects of import competition in the United States1.000194100%
2Canay, I. A., A. Santos, and A. M. Shaikh (2021) The wild bootstrap with a “small" number of “large" clusters1.000147100%
3Bester, C. A., T. G. Conley, and C. B. Hansen (2011) Inference with dependent data using cluster covariance estimators1.000125100%
4MacKinnon, J. G., M. . Nielsen, and M. D. Webb (2023) a): Cluster-robust inference: A guide to empirical practice1.00094100%
5Djogbenou, A. A., J. G. MacKinnon, and M. . Nielsen (2019) Djogbenou-Mackinnon-Nielsen(2019)Asymptotic theory and wild bootstrap inference with clustered errors1.00083100%
6Finlay, K. and L. M. Magnusson (2019) Finlay-Magnusson(2019)Two applications of wild bootstrap methods to improve inference in cluster-IV models1.00074100%
7Hwang, J (2021) Simple and trustworthy cluster-robust GMM inference1.00063100%
8MacKinnon, J. G (2023) Fast cluster bootstrap methods for linear regression models1.00063100%
9Canay, I. A., J. P. Romano, and A. M. Shaikh (2017) Randomization tests under an approximate symmetry assumption1.00055100%
10Andrews, I., J. H. Stock, and L. Sun (2019) Andrews-Stock-Sun(2019)Weak instruments in instrumental variables regression: Theory and practice1.00053100%

Showing the top 10 of 83 scored citations.