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Implementation in dominant strategies of quota rules to choose one candidate

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  • Amorós, Pablo

Abstract

A group of n experts has to pick one winner from a group of candidates. Each expert has a judgment about who is the best candidate. A social choice rule (SCR) is a function that aggregates experts’ judgments to determine the deserving winner. Experts may be biased and not want to reveal their judgments. We state a necessary and sufficient condition for implementing an SCR in dominant strategies. We show that no q-supermajoritarian SCR with q≤n−1 or q-submajoritarian SCR with q≥2 satisfies this condition.

Suggested Citation

  • Amorós, Pablo, 2022. "Implementation in dominant strategies of quota rules to choose one candidate," Economics Letters, Elsevier, vol. 216(C).
    • Handle: RePEc:eee:ecolet:v:216:y:2022:i:c:s0165176522001586
    DOI: 10.1016/j.econlet.2022.110557
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    References listed on IDEAS

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    1. Tamura, Shohei, 2016. "Characterizing minimal impartial rules for awarding prizes," Games and Economic Behavior, Elsevier, vol. 95(C), pages 41-46.
    2. Mackenzie, Andrew, 2015. "Symmetry and impartial lotteries," Games and Economic Behavior, Elsevier, vol. 94(C), pages 15-28.
    3. Andrew Mackenzie, 2020. "An axiomatic analysis of the papal conclave," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 69(3), pages 713-743, April.
    4. Ron Holzman & Hervé Moulin, 2013. "Impartial Nominations for a Prize," Econometrica, Econometric Society, vol. 81(1), pages 173-196, January.
    Full references (including those not matched with items on IDEAS)

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    More about this item

    Keywords

    Deserving winner; Impartial experts; Implementation; Supermajority rules; Submajority rules;
    All these keywords.

    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • D71 - Microeconomics - - Analysis of Collective Decision-Making - - - Social Choice; Clubs; Committees; Associations
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design

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