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Minority-proof cheap-talk protocol

Heller, Yuval (2005): Minority-proof cheap-talk protocol. Published in: Games and Economic Behaivor , Vol. 69, No. 2 (July 2010): pp. 394-400.

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Abstract

This paper analyzes the implementation of correlated equilibria that are immune to joint deviations of coalitions by cheap-talk protocols. We construct a cheap-talk protocol that is resistant to deviations of fewer than half the players, and using it, we show that a large set of correlated equilibria can be implemented as Nash equilibria in the extended game with cheap-talk. Furthermore, we demonstrate that in general there is no cheap-talk protocol that is resistant for deviations of half the players.

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