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Long Cheap Talk

  • Robert J. Aumann
  • Sergiu Hart

With cheap talk, more can be achieved by long conversations than by a single message-even when one side is strictly better informed than the other. ("Cheap talk" means plain conversation-unmediated, nonbinding, and payoff-irrelevant.) This work characterizes the equilibrium payoffs for all two-person games in which one side is better informed than the other and cheap talk is permitted. Copyright The Econometric Society 2003.

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Article provided by Econometric Society in its journal Econometrica.

Volume (Year): 71 (2003)
Issue (Month): 6 (November)
Pages: 1619-1660

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Handle: RePEc:ecm:emetrp:v:71:y:2003:i:6:p:1619-1660
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  1. Banerjee, Abhijit & Weibull, Jorgen W., 2000. "Neutrally Stable Outcomes in Cheap-Talk Coordination Games," Games and Economic Behavior, Elsevier, vol. 32(1), pages 1-24, July.
  2. Joseph Farrell & Matthew Rabin, 1996. "Cheap Talk," Journal of Economic Perspectives, American Economic Association, vol. 10(3), pages 103-118, Summer.
  3. Aumann, Robert J., 1974. "Subjectivity and correlation in randomized strategies," Journal of Mathematical Economics, Elsevier, vol. 1(1), pages 67-96, March.
  4. J. Farrell, 2010. "Meaning and Credibility in Cheap Talk Games," Levine's Working Paper Archive 533, David K. Levine.
  5. Matthew Rabin and Joel Sobel., 1993. "Deviations, Dynamics and Equilibrium Refinements," Economics Working Papers 93-211, University of California at Berkeley.
  6. Forges, Françoise, 1992. "Repeated games of incomplete information : non-zero-sum," Economics Papers from University Paris Dauphine 123456789/184, Paris Dauphine University.
  7. Sandeep Baliga & Tomas Sjostrom, 2003. "Arms Races and Negotiations," Levine's Working Paper Archive 618897000000000766, David K. Levine.
  8. Mertens,Jean-François & Sorin,Sylvain & Zamir,Shmuel, 2015. "Repeated Games," Cambridge Books, Cambridge University Press, number 9781107662636.
    • Mertens,Jean-François & Sorin,Sylvain & Zamir,Shmuel, 2015. "Repeated Games," Cambridge Books, Cambridge University Press, number 9781107030206.
  9. Warneryd Karl, 1993. "Cheap Talk, Coordination, and Evolutionary Stability," Games and Economic Behavior, Elsevier, vol. 5(4), pages 532-546, October.
  10. Marco Battaglini, 2002. "Multiple Referrals and Multidimensional Cheap Talk," Econometrica, Econometric Society, vol. 70(4), pages 1379-1401, July.
  11. Green, Jerry R. & Stokey, Nancy L., 2007. "A two-person game of information transmission," Journal of Economic Theory, Elsevier, vol. 135(1), pages 90-104, July.
  12. Baliga, Sandeep & Morris, Stephen, 2002. "Co-ordination, Spillovers, and Cheap Talk," Journal of Economic Theory, Elsevier, vol. 105(2), pages 450-468, August.
  13. Zapater, Inigo, 1997. "Credible Proposals in Communication Games," Journal of Economic Theory, Elsevier, vol. 72(1), pages 173-197, January.
  14. Myerson, Roger B., 1994. "Communication, correlated equilibria and incentive compatibility," Handbook of Game Theory with Economic Applications, in: R.J. Aumann & S. Hart (ed.), Handbook of Game Theory with Economic Applications, edition 1, volume 2, chapter 24, pages 827-847 Elsevier.
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  16. Blume, A. & Kim, Y.G. & Sobel, J., 1993. "Evolutionary Stability in Games of Communication," Working Papers 93-07, University of Iowa, Department of Economics.
  17. Rabin, Matthew, 1990. "Communication between rational agents," Journal of Economic Theory, Elsevier, vol. 51(1), pages 144-170, June.
  18. Simon, Robert Samuel, 2002. "Separation of joint plan equilibrium payoffs from the min-max functions," Games and Economic Behavior, Elsevier, vol. 41(1), pages 79-102, October.
  19. FORGES, Françoise, . "Universal mechanisms," CORE Discussion Papers RP 914, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  20. Steven A. Matthews & M. Okuno-Fujiwara & Andrew Postlewaite, 1990. "Refining Cheap-Talk Equilibria," Discussion Papers 892R, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  21. repec:oup:qjecon:v:105:y:1990:i:2:p:375-98 is not listed on IDEAS
  22. Robson, A.J., 1989. "Efficiency In Evolutionary Games: Darwin, Nash And Secret Handshake," Papers 89-22, Michigan - Center for Research on Economic & Social Theory.
  23. Ehud Lehrer & Sylvain Sorin, 1994. "One-Shot Public Mediated Talk," Discussion Papers 1108, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  24. Crawford, Vincent P & Sobel, Joel, 1982. "Strategic Information Transmission," Econometrica, Econometric Society, vol. 50(6), pages 1431-51, November.
  25. Ben-Porath, Elchanan, 1998. "Correlation without Mediation: Expanding the Set of Equilibrium Outcomes by "Cheap" Pre-play Procedures," Journal of Economic Theory, Elsevier, vol. 80(1), pages 108-122, May.
  26. Dino Gerardi, 2002. "Unmediated Communication in Games with Complete and Incomplete Information," Cowles Foundation Discussion Papers 1371, Cowles Foundation for Research in Economics, Yale University.
  27. Blume, A. & Sobel, J., 1991. "Communication-Proof Equilibria in Cheap-Talk Games," Working Papers 91-27, University of Iowa, Department of Economics.
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