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Collusion and Reciprocity in Infinitely Repeated Games


  • Pinto, Luis Santos


This paper extends the standard industrial organization models of repeated interaction between firms by incorporating preferences for reciprocity. A reciprocal firm responds to unkind behavior of rivals with unkind actions (destructive reciprocity), while at the same time, it responds to kind behavior of rivals with kind actions (constructive reciprocity). The main finding of the paper is that, for plausible perceptions of fairness, preferences for reciprocity facilitate collusion in infinitely repeated market games, that is, the critical discount rate at wish collusion can be sustained tends to be lower when firms have preferences for reciprocity than when firms are selfish. The paper also finds that the best collusive outcome that can be sustained in the infinitely repeated Cournot game with reciprocal firms is worse for consumers than the best collusive outcome that can be sustained in the infinitely repeated Cournot game with selfish firms.

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  • Pinto, Luis Santos, 2007. "Collusion and Reciprocity in Infinitely Repeated Games," FEUNL Working Paper Series wp512, Universidade Nova de Lisboa, Faculdade de Economia.
  • Handle: RePEc:unl:unlfep:wp512

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    References listed on IDEAS

    1. Gervais, Simon & Odean, Terrance, 2001. "Learning to be Overconfident," Review of Financial Studies, Society for Financial Studies, vol. 14(1), pages 1-27.
    2. Luís Santos-Pinto & Joel Sobel, 2005. "A Model of Positive Self-Image in Subjective Assessments," American Economic Review, American Economic Association, vol. 95(5), pages 1386-1402, December.
    3. Basu, Sudipta & Markov, Stanimir, 2004. "Loss function assumptions in rational expectations tests on financial analysts' earnings forecasts," Journal of Accounting and Economics, Elsevier, vol. 38(1), pages 171-203, December.
    4. Chen, Zhaohui & Giovannini, Alberto, 1992. "Target zones and the distribution of exchange rates: An estimation method," Economics Letters, Elsevier, vol. 40(1), pages 83-89, September.
    5. Isaac, R Mark & James, Duncan, 2000. "Just Who Are You Calling Risk Averse?," Journal of Risk and Uncertainty, Springer, vol. 20(2), pages 177-187, March.
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    Cited by:

    1. Santos-Pinto, Luís, 2006. "Reciprocity, inequity-aversion, and oligopolistic competition," MPRA Paper 3143, University Library of Munich, Germany, revised 14 Apr 2007.

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