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Incentives and the Structure of Communication

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Thomas Rivera
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Abstract

This paper analyzes the issue of implementing correlated and communication equilibria when pre-play communication is restricted to a particular network (e.g., a hierarchy). When communication between the mediator and the players is not direct and private, as assumed when invoking the revelation principle, there may be incentives for other players in the network to misbehave during the communication phase while players report their private information to the mediator and the mediator sends suggested actions to the players. To remedy this issue, we provide necessary and sufficient conditions on the topology of the network of communication such that restricting communication between the mediator and the players to a particular network does not restrict the set of (communication equilibrium) outcomes that could otherwise be achieved. We show that for any underlying game and any equilibrium outcome available when communication is direct, there exists a communication scheme restricted to a particular network that implements all such outcomes (i.e., does not induce players to deviate in the communication phase) if and only if that network satisfies our conditions.
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hal-01993408 , version 1 (24-01-2019)

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  • HAL Id : hal-01993408 , version 1

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Thomas Rivera. Incentives and the Structure of Communication. 2016. ⟨hal-01993408⟩

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