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Equilibria in a Dynamic Global Game: The Role of Cohort Effects

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  • Heidhues, Paul
  • Melissas, Nicolas

Abstract

We introduce strategic waiting in a global game setting with irreversible investment. Players can wait in order to make a better informed decision. We allow for cohort effects and discuss when they arise endogenously in technology adoption problems with positive contemporaneous network effects. Formally, cohort effects lead to intra-period network effects being greater than inter-period network effects. Depending on the nature of the cohort effects, the dynamic game may or may not satisfy dynamic increasing differences. If it does, our model has a unique rationalizable outcome. Otherwise, there exist parameter values for which multiple equilibria arise because players have a strong incentive to invest at the same point in time others do.

Suggested Citation

  • Heidhues, Paul & Melissas, Nicolas, 2005. "Equilibria in a Dynamic Global Game: The Role of Cohort Effects," CEPR Discussion Papers 4995, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:4995
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    Keywords

    Global game; Strategic waiting; Coordination; Strategic complementarities; Period-speciifc network effects; Equilibrium selection;
    All these keywords.

    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
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness

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