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On Communication and Collusion

Author

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  • Yu Awaya
  • Vijay Krishna

Abstract

We study the role of communication within a cartel. Our analysis is carried out in Stigler's (1964) model of repeated oligopoly with secret price cuts. Firms observe neither the prices nor the sales of their rivals. For a fixed discount factor, we identify conditions under which there are equilibria with "cheap talk" that result in near-perfect collusion, whereas all equilibria without such communication are bounded away from this outcome. In our model, communication improves monitoring and leads to higher prices and profits. (JEL C73, D43, D83, L12, L13, L25)

Suggested Citation

  • Yu Awaya & Vijay Krishna, 2016. "On Communication and Collusion," American Economic Review, American Economic Association, vol. 106(2), pages 285-315, February.
    • Handle: RePEc:aea:aecrev:v:106:y:2016:i:2:p:285-315
    Note: DOI: 10.1257/aer.20141469
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    References listed on IDEAS

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    Cited by:

    1. Fudenberg, Drew & Gao, Ying & Pei, Harry, 2022. "A reputation for honesty," Journal of Economic Theory, Elsevier, vol. 204(C).
    2. Sahuguet, Nicolas & Walckiers, Alexis, 2017. "A theory of hub-and-spoke collusion," International Journal of Industrial Organization, Elsevier, vol. 53(C), pages 353-370.
    3. David Spector, 2022. "Cheap Talk, Monitoring and Collusion," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 60(2), pages 193-216, March.
    4. Hemant Bhargava & Antoine Dubus & David Ronayne & Shiva Shekhar, 2024. "The Strategic Value of Data Sharing in Interdependent Markets," CESifo Working Paper Series 10963, CESifo.
    5. Andres, Maximilian & Bruttel, Lisa & Friedrichsen, Jana, 2021. "The leniency rule revisited: Experiments on cartel formation with open communication," International Journal of Industrial Organization, Elsevier, vol. 76(C).
    6. Rohit Lamba & Sergey Zhuk, 2022. "Pricing with algorithms," Papers 2205.04661, arXiv.org, revised Jun 2022.
    7. Sugaya, Takuo & Wolitzky, Alexander, 2018. "Bounding payoffs in repeated games with private monitoring: n-player games," Journal of Economic Theory, Elsevier, vol. 175(C), pages 58-87.
    8. Awaya, Yu & Krishna, Vijay, 2019. "Communication and cooperation in repeated games," Theoretical Economics, Econometric Society, vol. 14(2), May.
    9. Hörner, Johannes & Takahashi, Satoru, 2016. "How fast do equilibrium payoff sets converge in repeated games?," Journal of Economic Theory, Elsevier, vol. 165(C), pages 332-359.
    10. Welter, Dominik & Napel, Stefan, 2016. "Responsibility-based allocation of cartel damages," VfS Annual Conference 2016 (Augsburg): Demographic Change 145886, Verein für Socialpolitik / German Economic Association.
    11. Heng Liu, 2017. "Correlation and unmediated cheap talk in repeated games with imperfect monitoring," International Journal of Game Theory, Springer;Game Theory Society, vol. 46(4), pages 1037-1069, November.
    12. Escobar, Juan F. & Llanes, Gastón, 2018. "Cooperation dynamics in repeated games of adverse selection," Journal of Economic Theory, Elsevier, vol. 176(C), pages 408-443.
    13. David Spector, 2022. "Cheap Talk, Monitoring and Collusion," PSE-Ecole d'économie de Paris (Postprint) halshs-03760756, HAL.
    14. Odenkirchen, Johannes, 2017. "Pricing Behavior of Cartel Outsiders in Incomplete Cartels," VfS Annual Conference 2017 (Vienna): Alternative Structures for Money and Banking 168309, Verein für Socialpolitik / German Economic Association.
    15. Heller, Yuval, 2017. "Instability of belief-free equilibria," Journal of Economic Theory, Elsevier, vol. 168(C), pages 261-286.
    16. Nobuyuki Hanaki & Ali I. Ozkes, 2023. "Strategic environment effect and communication," Experimental Economics, Springer;Economic Science Association, vol. 26(3), pages 588-621, July.
    17. Harrington, Joseph E., 2017. "A theory of collusion with partial mutual understanding," Research in Economics, Elsevier, vol. 71(1), pages 140-158.
    18. Porter, Robert H., 2020. "Mergers and coordinated effects," International Journal of Industrial Organization, Elsevier, vol. 73(C).
    19. Melissa Carlson & Barbara Koremenos, 2021. "Cooperation Failure or Secret Collusion? Absolute Monarchs and Informal Cooperation," The Review of International Organizations, Springer, vol. 16(1), pages 95-135, January.
    20. Aaron Barkley & David P. Byrne & Xiaosong Wu, 2022. "Price effects of calling out market power: A study of the COVID‐19 oil price shock," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 31(4), pages 923-941, November.
    21. Do, Jihwan, 2022. "Cheating and compensation in price-fixing cartels," Journal of Economic Theory, Elsevier, vol. 200(C).
    22. Maximilian Andres, 2024. "Equilibrium selection in infinitely repeated games with communication," CEPA Discussion Papers 75, Center for Economic Policy Analysis.
    23. Yu Awaya, 2021. "Private Monitoring and Communication in the Repeated Prisoner’s Dilemma," Games, MDPI, vol. 12(4), pages 1-10, October.
    24. David Spector, 2022. "Cheap Talk, Monitoring and Collusion," Post-Print halshs-03760756, HAL.

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    More about this item

    JEL classification:

    • C73 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Stochastic and Dynamic Games; Evolutionary Games
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
    • L12 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Monopoly; Monopolization Strategies
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • L25 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Firm Performance

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