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Extreme Quantile Treatment Effects under Endogeneity: Evaluating Policy Effects for the Most Vulnerable Individuals

Yuya Sasaki, Yulong Wang

arXiv 6 Sep 2024 · Econometrics · publishedJournal of Business and Economic Statistics (2025)

arXiv:2409.03979 · PDF · DOI · OpenAlex · Extracted main text

Abstract

We introduce a novel method for estimating and conducting inference about extreme quantile treatment effects (QTEs) in the presence of endogeneity. Our approach is applicable to a broad range of empirical research designs, including instrumental variables design and regression discontinuity design, among others. By leveraging regular variation and subsampling, the method ensures robust performance even in extreme tails, where data may be sparse or entirely absent. Simulation studies confirm the theoretical robustness of our approach. Applying our method to assess the impact of job training provided by the Job Training Partnership Act (JTPA), we find significantly negative QTEs for the lowest quantiles (i.e., the most disadvantaged individuals), contrasting with previous literature that emphasizes positive QTEs for intermediate quantiles.

Citation extraction

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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
1Frandsen, B. R., M. Frölich, and B. Melly (2012) Quantile treatment effects in the regression discontinuity design0.81142100%
2de Haan, L. and A. Ferreira (2006) Extreme Value Theory: An Introduction0.7373367%
3Sasaki, Y. and Y. Wang (2024) Extreme Changes in Changes self0.73732100%
4Abadie, A., J. Angrist, and G. Imbens (2002) Instrumental variables estimates of the effect of subsidized training on the quantiles of trainee earnings0.64422100%
5Hill, B. M (1975) A simple general approach to inference about the tail of a distribution0.51121100%
6Zhang, Y (2018) Extremal Quantile Treatment Effects0.51121100%
7Heckman, J., H. Ichimura, J. Smith, and P. Todd (1998) Characterizing Selection Bias Using Experimental Data0.40511100%
8Hill, J. B (2010) On Tail Index Estimation for Dependent, Heterogeneous Data0.40511100%
9Hill, J. B (2015) Tail Index Estimation for a Filtered Dependent Time Series0.40511100%
10Abadie, A (2003) Semiparametric instrumental variable estimation of treatment response models0.40511100%

Showing the top 10 of 20 scored citations.