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An Evolutionary Analysis of Pre-Play Communication and Efficiency in Games

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  • Kenichi Amaya

    (Research Institute for Economics & Business Administration (RIEB), Kobe University, Japan)

Abstract

This paper studies the effects of pre-play communication on equilibrium selection in 2x2 symmetric coordination games. The players repeatedly play a coordination game preceded by an opportunity to exchange payoff irrelevant messages and gradually adjust their behavior. In short run, the players' access to the actions of the coordination game may be restricted. While the players can revise the set of accessible actions only occasionally, they frequently adjust their behavior in the cheap-talk game, taking the set of currently available actions as given. We obtain an efficient-equilibrium-selection result if the under-lying coordination game satisfies the self-signalling condition. On the other hand, if the game is not self-signalling, both the efficient and the inefficient equilibrium outcomes are stable.

Suggested Citation

  • Kenichi Amaya, 2004. "An Evolutionary Analysis of Pre-Play Communication and Efficiency in Games," Discussion Paper Series 165, Research Institute for Economics & Business Administration, Kobe University.
    • Handle: RePEc:kob:dpaper:165
    as

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    File URL: https://www.rieb.kobe-u.ac.jp/academic/ra/dp/English/dp165.pdf
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    References listed on IDEAS

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    More about this item

    Keywords

    Coordination games; Communication; Evolution; Efficiency; Cheap talk;
    All these keywords.

    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games

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