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Evolving Aspirations and Cooperation

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  • Karandikar, Rajeeva
  • Mookherjee, Dilip
  • Ray, Debraj
  • Vega-Redondo, Fernando

Abstract

A model of "satisficing" behavior in the repeated Prisoners Dilemma is studied. Each player has an aspiration at each date, and takes an action. [S]he switches from the action played in the previous period only if the achieved payoff fell below the aspiration level (with a probability that depends on the shortfall). Aspirations are updated in each period, according to payoff experience in the previous period In addition, aspirations are subjected to random perturbations around the going level, with a small "tremble" probability. For sufficiently slow updating of aspirations, and small tremble probability, it is shown that in the long run both players cooperate most of the time.
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Suggested Citation

  • Karandikar, Rajeeva & Mookherjee, Dilip & Ray, Debraj & Vega-Redondo, Fernando, 1998. "Evolving Aspirations and Cooperation," Journal of Economic Theory, Elsevier, vol. 80(2), pages 292-331, June.
  • Handle: RePEc:eee:jetheo:v:80:y:1998:i:2:p:292-331
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    References listed on IDEAS

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