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Renegotiation-Proof Cheap Talk

Steven KIVINEN et Christoph Kuzmics

Séminaire CIREQ-Concordia
conjoint avec le Department of Economics, Concordia University
salle H-1145 (Concordia University, 1455 de Maisonneuve Blvd ouest, 11e étage)
Responsable : Ming Li (Concordia U.)

Résumé : 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 constitute a compromise between the Advisor and the Decision-Maker.