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Communication in Cournot Oligopoly

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Abstract

We study communication in a static Cournot duopoly model under the assumption that the firms have unverifiable private information about their costs. We show that cheap talk between the firms cannot transmit any information. However, if the firms can communicate through a third party, communication can be informative even when it is not substantiated by any commitment or costly actions. We exhibit a simple mechanism that ensures informative communication and interim Pareto dominates the uninformative equilibrium for the firms.

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Bibliographic Info

Paper provided by University of Western Ontario, Department of Economics in its series UWO Department of Economics Working Papers with number 20121.

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Date of creation: 2012
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Handle: RePEc:uwo:uwowop:20121

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Postal: Department of Economics, Reference Centre, Social Science Centre, University of Western Ontario, London, Ontario, Canada N6A 5C2
Phone: 519-661-2111 Ext.85244
Web page: http://economics.uwo.ca/research/research_papers/department_working_papers.html

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Keywords: Cournot oligopoly; communication; information; cheap talk; mediation;

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References

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  1. Vida, Péter & Azacis, Helmuts, 2012. "A Detail-Free Mediator," Cardiff Economics Working Papers E2012/10, Cardiff University, Cardiff Business School, Economics Section.
  2. Subir K. Chakrabarti, 2010. "Collusive Equilibrium In Cournot Oligopolies With Unknown Costs," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 51(4), pages 1209-1238, November.
  3. Peter Cramton & Thomas R. Palfrey, 1991. "Cartel Enforcement with Uncertainty About Costs," Papers of Peter Cramton 90ier, University of Maryland, Department of Economics - Peter Cramton, revised 09 Jun 1998.
  4. Sandeep Baliga & Tomas Sjostrom, 2001. "Arms Races and Negotiations," NajEcon Working Paper Reviews 391749000000000005, www.najecon.org.
  5. Vives, Xavier, 1984. "Duopoly information equilibrium: Cournot and bertrand," Journal of Economic Theory, Elsevier, vol. 34(1), pages 71-94, October.
  6. Gossner, Olivier & Vieille, Nicolas, 2001. "Repeated Communication Through the Mechanism And," Economics Papers from University Paris Dauphine 123456789/6031, Paris Dauphine University.
  7. Okuno-Fujiwara, Masahiro & Postlewaite, Andrew & Suzumura, Kotaro, 1990. "Strategic Information Revelation," Review of Economic Studies, Wiley Blackwell, vol. 57(1), pages 25-47, January.
  8. Gal-Or, Esther, 1985. "Information Sharing in Oligopoly," Econometrica, Econometric Society, vol. 53(2), pages 329-43, March.
  9. David Hugh-Jones & David Reinstein, 2010. "Losing Face," Economics Discussion Papers 691, University of Essex, Department of Economics.
  10. Kai-Uwe Kühn, 2001. "Fighting collusion by regulating communication between firms," Economic Policy, CEPR & CES & MSH, vol. 16(32), pages 167-204, 04.
  11. Liu, Luchuan, 1996. "Correlated Equilibrium of Cournot Oligopoly Competition," Journal of Economic Theory, Elsevier, vol. 68(2), pages 544-548, February.
  12. Drew Fudenberg & Jean Tirole, 1991. "Game Theory," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262061414, January.
  13. Watson, Joel, 1996. "Information Transmission When the Informed Party Is Confused," Games and Economic Behavior, Elsevier, vol. 12(1), pages 143-161, January.
  14. Goltsman, Maria & Hörner, Johannes & Pavlov, Gregory & Squintani, Francesco, 2009. "Mediation, arbitration and negotiation," Journal of Economic Theory, Elsevier, vol. 144(4), pages 1397-1420, July.
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Cited by:
  1. Chirantan Ganguly & Indrajit Ray, 2013. "Information-Revelation and Coordination Using Cheap Talk in a Battle of the Sexes with Two-Sided Private Information," Discussion Papers 13-01r, Department of Economics, University of Birmingham.

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