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Regret-free truth-telling in school choice with consent

Author

Listed:
  • Chen, Yiqiu

    (Department of Management, Economics and Social Sciences, University of Cologne)

  • Möller, Markus

    (Department of Economics, University of Bonn)

Abstract

The Efficiency Adjusted Deferred Acceptance Rule (EDA) is a promising candidate mechanism for public school assignment. A potential drawback of EDA is that it could encourage students to game the system since it is not strategy-proof. However, to successfully strategize, students typically need information that is unlikely to be available to them in practice. We model school choice under incomplete information and show that EDA is regret-free truth-telling, which is a weaker incentive property than strategy-proofness and was introduced by Fernandez 2020. We also show that there is no efficient matching rule that weakly Pareto dominates a stable matching rule and is regret-free truth-telling. Note that the original version of EDA by Kesten 2010 weakly Pareto dominates a stable matching rule, but it is not efficient.

Suggested Citation

  • Chen, Yiqiu & Möller, Markus, 2024. "Regret-free truth-telling in school choice with consent," Theoretical Economics, Econometric Society, vol. 19(2), May.
    • Handle: RePEc:the:publsh:4979
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    References listed on IDEAS

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    1. Eden Hartman & Erel Segal-Halevi & Biaoshuai Tao, 2025. "It's Not All Black and White: Degree of Truthfulness for Risk-Avoiding Agents," Papers 2502.18805, arXiv.org, revised Jan 2026.

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    Keywords

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    JEL classification:

    • C78 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Bargaining Theory; Matching Theory
    • D81 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Criteria for Decision-Making under Risk and Uncertainty
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • I20 - Health, Education, and Welfare - - Education - - - General

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