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Efficient communication in the electronic mail game

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  • De Jaegher, Kris

Abstract

The literature on the electronic mail game shows that players' mutual expectations may lock them into requiring an inefficiently large number of confirmations and confirmations of confirmations from one another. This paper shows that this result hinges on the assumption that, with the exception of the first message, each player can only send a message when receiving an immediately preceding message. We show that, once this assumption is lifted, equilibria involving confirmations of confirmations no longer pass standard refinements of the Nash equilibrium, and are no longer evolutionary stable.

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Bibliographic Info

Article provided by Elsevier in its journal Games and Economic Behavior.

Volume (Year): 63 (2008)
Issue (Month): 2 (July)
Pages: 468-497

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Handle: RePEc:eee:gamebe:v:63:y:2008:i:2:p:468-497

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Web page: http://www.elsevier.com/locate/inca/622836

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  1. Noldeke, G. & Samuelson, L., 1996. "A Dynamic Model of Equilibrium Selection in Signaling Markets," Working papers 9518r, Wisconsin Madison - Social Systems.
  2. In-Koo Cho & David M. Kreps, 1997. "Signaling Games and Stable Equilibria," Levine's Working Paper Archive 896, David K. Levine.
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  5. Georg Noldeke & Larry Samuelson, 1994. "Learning to Signal in Markets," Game Theory and Information 9410001, EconWPA, revised 21 Oct 1994.
  6. Binmore, Ken & Samuelson, Larry, 2001. "Coordinated Action in the Electronic Mail Game," Games and Economic Behavior, Elsevier, vol. 35(1-2), pages 6-30, April.
  7. David Kreps & Robert Wilson, 1998. "Sequential Equilibria," Levine's Working Paper Archive 237, David K. Levine.
  8. Karl H. Schlag & Dieter Balkenborg, 2001. "Evolutionarily stable sets," International Journal of Game Theory, Springer, vol. 29(4), pages 571-595.
  9. Swinkels, J., 1991. "Evolutionary Stability with Equilibrium Entrants," Papers 9, Stanford - Institute for Thoretical Economics.
  10. Monderer, Dov & Samet, Dov, 1989. "Approximating common knowledge with common beliefs," Games and Economic Behavior, Elsevier, vol. 1(2), pages 170-190, June.
  11. Matsui, Akihiko, 1992. "Best response dynamics and socially stable strategies," Journal of Economic Theory, Elsevier, vol. 57(2), pages 343-362, August.
  12. Stephen Morris & Hyun Song Shin, . ""Approximate Common Knowledge and Co-ordination: Recent Lessons from Game Theory''," CARESS Working Papres 96-07, University of Pennsylvania Center for Analytic Research and Economics in the Social Sciences.
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