Communication and Efficiency in Coordination Game Experiments

Abstract

We examine the effects of pre-play communication in an experimental game with conflicting risk-dominant and payoff-dominant equilibria. We find that most players condition their choices on the messages received, and do so in an intuitive way, announcing an intention to play the payoff-dominant action, and choosing the payoff-dominant action if the opponent expresses the same intention. However, a significant minority of players misrepresent their intentions. In some sessions where these players appear, behavior converges to an equilibrium in which subjects misrepresent their intentions and play the risk-dominant equilibrium.

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