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Are Nearly Exogenous Instruments Reliable?

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  • Mehmet Caner
  • Dan Berkowitz
  • Ying Fang

Abstract

We show that when instruments are nearly exogenous, the two stage least squares t-statistic unpredictably over-rejects or under-rejects the null hypothesis that the endogenous regressor is insignificant and Anderson-Rubin test over-rejects the null. We prove that in the limit these tests are no longer nuisance parameter free.

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File URL: http://www.econ.pitt.edu/papers/Mehmet_bcf_061506-final.pdf
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Bibliographic Info

Paper provided by University of Pittsburgh, Department of Economics in its series Working Papers with number 207.

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Date of creation: Jan 2006
Date of revision: Jan 2006
Handle: RePEc:pit:wpaper:207

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References

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  10. Daron Acemoglu & Simon Johnson, 2005. "Unbundling Institutions," Journal of Political Economy, University of Chicago Press, vol. 113(5), pages 949-995, October.
  11. Costas Meghir & Marten Palme, 2000. "Assessing the Effect of Schooling on Earnings Using a Social Experiment," Econometric Society World Congress 2000 Contributed Papers 0670, Econometric Society.
  12. Donald W. K. Andrews, 2000. "Inconsistency of the Bootstrap when a Parameter Is on the Boundary of the Parameter Space," Econometrica, Econometric Society, vol. 68(2), pages 399-406, March.
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Citations

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Cited by:
  1. repec:wyi:journl:002137 is not listed on IDEAS
  2. Berkowitz, Daniel & DeJong, David N., 2011. "Growth in post-Soviet Russia: A tale of two transitions," Journal of Economic Behavior & Organization, Elsevier, vol. 79(1-2), pages 133-143, June.
  3. Lee, Seojeong, 2014. "Asymptotic refinements of a misspecification-robust bootstrap for generalized method of moments estimators," Journal of Econometrics, Elsevier, vol. 178(P3), pages 398-413.
  4. repec:wyi:journl:002148 is not listed on IDEAS
  5. Doko Tchatoka, Firmin Sabro, 2012. "Specification Tests with Weak and Invalid Instruments," MPRA Paper 40185, University Library of Munich, Germany.
  6. Dang, Duc Anh, 2013. "How foreign direct investment promote institutional quality: Evidence from Vietnam," Journal of Comparative Economics, Elsevier, vol. 41(4), pages 1054-1072.
  7. Jan F. KIVIET & Jerzy NIEMCZYK, 2013. "On the limiting and empirical distributions of IV estimators when some of the instruments are actually endogenous," Economic Growth centre Working Paper Series 1311, Nanyang Technolgical University, School of Humanities and Social Sciences, Economic Growth centre.
  8. Berkowitz, Daniel & Caner, Mehmet & Fang, Ying, 2012. "The validity of instruments revisited," Journal of Econometrics, Elsevier, vol. 166(2), pages 255-266.
  9. Kraay, Aart, 2008. "Instrumental variables regressions with honestly uncertain exclusion restrictions," Policy Research Working Paper Series 4632, The World Bank.
  10. Michal Kolesár & Raj Chetty & John N. Friedman & Edward L. Glaeser & Guido W. Imbens, 2011. "Identification and Inference with Many Invalid Instruments," NBER Working Papers 17519, National Bureau of Economic Research, Inc.
  11. Cai, Zongwu & Fang, Ying & Su, Jia, 2012. "Reducing asymptotic bias of weak instrumental estimation using independently repeated cross-sectional information," Statistics & Probability Letters, Elsevier, vol. 82(1), pages 180-185.
  12. repec:wyi:journl:002149 is not listed on IDEAS

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