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Cournot meets Bayes-Nash : A Discontinuity in Behavior Infinitely Repeated Duopoly Games

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  • Argenton, Cedric

    (Tilburg University, School of Economics and Management)

  • Ivanova-Stenzel, Radosveta
  • Müller, Wieland

    (Tilburg University, School of Economics and Management)

Abstract

We conduct a series of Cournot duopoly market experiments with a high number of repetitions and fixed matching. Our treatments include markets with (a) complete cost symmetry and complete information, (b) slight cost asymmetry and complete information, and (c) varying cost asymmetries and incomplete information. For the case of complete cost symmetry and complete information, our data confirm the well-known result that duopoly players achieve, on average, partial collusion. However, as soon as any level of cost asymmetry or incomplete information is introduced, observed average individual quantities are remarkably close to the static Bayes-Nash equilibrium predictions.
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Suggested Citation

  • Argenton, Cedric & Ivanova-Stenzel, Radosveta & Müller, Wieland, 2022. "Cournot meets Bayes-Nash : A Discontinuity in Behavior Infinitely Repeated Duopoly Games," Other publications TiSEM bec182fc-5222-4ec2-9632-3, Tilburg University, School of Economics and Management.
    • Handle: RePEc:tiu:tiutis:bec182fc-5222-4ec2-9632-3369a281269f
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    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • C92 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Group Behavior

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