FEEM working papers "Note di lavoro"
2017.028
Date: 7/6/2017

Information Design In Coalition Formation Games


Authors: Sareh Vosooghi (University of Oxford)
JEL n.: D83, D70, C72, Q54
Keywords: Coalition Formation, Learning, Information Persuasion, International Environmental Agreements

Abstract

I examine a setting, where an information sender conducts research into a payoff-relevant state variable, and releases information to agents, who consider joining a coalition. The agents' actions can cause harm by contributing to a public bad. The sender, who has commitment power, by designing an information mechanism (a set of signals and a probability distribution over them), maximises his payoff, which depends on the action taken by the agents, and the state variable. I show that the coalition size, as a function of beliefs of agents, is an endogenous variable, induced by the information sender. The optimal information mechanism from the general set of public information mechanisms, in coalition formation games is derived. I also apply the results to International Environmental Agreements (IEAs), where a central authority, as an information sender, attempts to reduce the global level of greenhouse gases (GHG) by communication of information on social cost of GHG.

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Suggested citation:  Vosooghi, S., (2017), 'Information Design In Coalition Formation Games', Nota di Lavoro 28.2017, Milan, Italy: Fondazione Eni Enrico Mattei

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