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Unanimity and local incentive compatibility in sparsely connected domains

Author

Listed:
  • Miho Hong

    (Yale University)

  • Semin Kim

    (Yonsei University)

Abstract

This paper studies the implications of imposing unanimity and local incentive compatibility on a deterministic social choice function. In an environment with strict ordinal preferences over a finite set of alternatives, we find that tops-onlyness and full incentive compatibility necessarily follow from unanimity and local incentive compatibility in sparsely connected domains. Furthermore, we identify a property of preference domains that completely characterizes dictatorial domains within sparsely connected domains.

Suggested Citation

  • Miho Hong & Semin Kim, 2023. "Unanimity and local incentive compatibility in sparsely connected domains," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 61(2), pages 385-411, August.
    • Handle: RePEc:spr:sochwe:v:61:y:2023:i:2:d:10.1007_s00355-023-01457-3
    DOI: 10.1007/s00355-023-01457-3
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    References listed on IDEAS

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