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Renegotiation-Proof Cheap Talk

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  • Steven Kivinen
  • Christoph Kuzmics

Abstract

An informed Advisor and an uninformed Decision-Maker engage in repeated cheap talk communication in always new (stochastically independent) decision problems. They have a conflict of interest over which action should be implemented at least in some cases. Our main result is that, while the Decision-Maker's optimal payoff is attainable in some subgame perfect equilibrium (by force of the usual folk theorem), no payoff profile close to the Decision-Maker's optimal one is immune to renegotiation. Pareto efficient renegotiation-proof equilibria are typically attainable, and they entail a compromise between the Advisor and the Decision-Maker. This could take the form of the Advisor being truthful and the Decision-Maker not utilizing this information to their own full advantage, or the Advisor being somewhat liberal with the truth and the Decision-Maker, while fully aware of this, pretending to believe the Advisor.

Suggested Citation

  • Steven Kivinen & Christoph Kuzmics, 2025. "Renegotiation-Proof Cheap Talk," Papers 2502.08296, arXiv.org.
    • Handle: RePEc:arx:papers:2502.08296
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    References listed on IDEAS

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    1. Green, Jerry R. & Stokey, Nancy L., 2007. "A two-person game of information transmission," Journal of Economic Theory, Elsevier, vol. 135(1), pages 90-104, July.
    2. Mailath, George J. & Samuelson, Larry, 2006. "Repeated Games and Reputations: Long-Run Relationships," OUP Catalogue, Oxford University Press, number 9780195300796.
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