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Honesty and Epistemological Implementation of Social Choice Functions with Asymmetric Information

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  • Hitoshi Matsushima

    (Department of Economics, University of Tokyo)

Abstract

We investigate the implementation of social choice functions with asymmetric information concerning the state from an epistemological perspective. Although agents are either selfish or honest, they do not expect other participants to be honest. However, an honest agent may exist not among participants but in their higher-order beliefs. We assume that “all agents are selfish†never happens to be common knowledge. We show a positive result in general asymmetric information environments, demonstrating that with a minor restriction on signal correlation called information diversity, any incentive-compatible social choice function, whether ethical or nonethical, is uniquely implementable in the Bayesian Nash equilibrium.

Suggested Citation

  • Hitoshi Matsushima, 2022. "Honesty and Epistemological Implementation of Social Choice Functions with Asymmetric Information," CARF F-Series CARF-F-549, Center for Advanced Research in Finance, Faculty of Economics, The University of Tokyo.
    • Handle: RePEc:cfi:fseres:cf549
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    References listed on IDEAS

    as
    1. Johannes Abeler & Daniele Nosenzo & Collin Raymond, 2019. "Preferences for Truth‐Telling," Econometrica, Econometric Society, vol. 87(4), pages 1115-1153, July.
    2. Matsushima, Hitoshi, 2022. "Epistemological implementation of social choice functions," Games and Economic Behavior, Elsevier, vol. 136(C), pages 389-402.
    3. Dutta, Bhaskar & Sen, Arunava, 2012. "Nash implementation with partially honest individuals," Games and Economic Behavior, Elsevier, vol. 74(1), pages 154-169.
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    6. Hitoshi Matsushima, 2013. "Process manipulation in unique implementation," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 41(4), pages 883-893, October.
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