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Coordinating by Not Committing : Efficiency as the Unique Outcome

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Listed:
  • Rohan Dutta
  • Ryosuke Ishii

Abstract

An important form of commitment is the ability to restrict the set of future actions from which choices can be made. We study a simple dynamic game of complete information which incorporates this type of commitment. For a given initial game, the players engage in an endogenously determined number of commitment periods before choosing from the remaining actions. We show the existence of equilibria with pure strategies in the commitment periods. For important classes of games, including pure coordination games and the staghunt game the equilibrium outcome is unique and efficient. This is despite the synchronous move structure. Moreover, efficient coordination does not necessarily involve commitments on the equilibrium path: the option alone is sufficient.

Suggested Citation

  • Rohan Dutta & Ryosuke Ishii, 2013. "Coordinating by Not Committing : Efficiency as the Unique Outcome," Cahiers de recherche 10-2013, Centre interuniversitaire de recherche en ├ęconomie quantitative, CIREQ.
  • Handle: RePEc:mtl:montec:10-2013
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    References listed on IDEAS

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    More about this item

    Keywords

    Dynamic Commitment; Endogenous Timing; Coordination Games; Uniqueness; Payoff Dominance; Stag Hunt;

    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • C73 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Stochastic and Dynamic Games; Evolutionary Games

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