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Sophisticated reasoning, learning, and equilibrium in repeated games with imperfect feedback

Author

Listed:
  • Pierpaolo Battigalli

    (Bocconi University and IGIER)

  • Davide Bordoli

    (Yale University)

Abstract

We analyze the infinite repetition with imperfect feedback of a simultaneous or sequential game, assuming that players are strategically sophisticated—but impatient—expected-utility maximizers. Sophisticated strategic reasoning in the repeated game is combined with belief updating to provide a foundation for a refinement of self-confirming equilibrium. In particular, we model strategic sophistication as rationality and common strong belief in rationality. Then, we combine belief updating and sophisticated reasoning to provide sufficient conditions for a kind of learning—that is, the ability, in the limit, to exactly forecast the sequence of future observations—thus showing that impatient agents end up playing a sequence of self-confirming equilibria in strongly rationalizable conjectures of the one-period game.

Suggested Citation

  • Pierpaolo Battigalli & Davide Bordoli, 2025. "Sophisticated reasoning, learning, and equilibrium in repeated games with imperfect feedback," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 80(2), pages 421-464, September.
  • Handle: RePEc:spr:joecth:v:80:y:2025:i:2:d:10.1007_s00199-024-01588-3
    DOI: 10.1007/s00199-024-01588-3
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    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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