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Selecting a Winner with External Referees

Author

Listed:
  • Francis Bloch

    (University Paris and Paris School of Economics)

  • Bhaskar Dutta

    (University of Warwick and Ashoka University)

  • Marcin Dziubinski

    (Institute of Informatics, University of Warsaw)

Abstract

We consider a problem of mechanism design without money, where a planner selects a winner among a set of agents with binary types and receives outside signals (like the report of external referees). We show that there is a gap between the optimal Dominant Strategy Incentive Compatible (DSIC) mechanism and the optimal Bayesian Incentive Compatible (BIC) mechanism. In the optimal BIC mechanism, the planner can leverage the outside signal to elicit information about agents' types. BIC mechanisms are lexicographic mechanisms, where the planner first shortlists agents who receive high reports from the referees and then uses agents' reports to break ties among agents in the shortlist. We compare the \self-evaluation" mechanism with a "peer evaluation" mechanism where agents evaluate other agents, and show that for the same signal precision, the self- evaluation mechanism outperforms the peer evaluation mechanism. We show that optimal Ex Post Incentive Compatible (EPIC) mechanisms give the planner an intermediate value between the optimal DSIC and BIC mechanisms.

Suggested Citation

  • Francis Bloch & Bhaskar Dutta & Marcin Dziubinski, 2023. "Selecting a Winner with External Referees," Working Papers 99, Ashoka University, Department of Economics.
    • Handle: RePEc:ash:wpaper:99
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    File URL: https://dp.ashoka.edu.in/ash/wpaper/paper99_0.pdf
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    References listed on IDEAS

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    Keywords

    Mechanism design without money;

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