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Conversations Among Competitors

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Author Info
Jeremy C. Stein

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Abstract

I develop a model of bilateral conversations in which players may honestly exchange ideas with their competitors. The key to incentive compatibility is a strong form of complementarity in the information structure: a player can only generate a useful new insight on a given topic if he has access to his counterpart's previous thoughts on the topic. I then embed this model into a linear social network in which player A first can have a conversation with player B, then player B can have a conversation with player C, and so on. I show that relatively underdeveloped ideas can travel long distances over the network and thus be shared by many agents. More valuable ideas, by contrast, tend to remain localized among small groups of agents.

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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 13370.

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Date of creation: Sep 2007
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Handle: RePEc:nbr:nberwo:13370

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Find related papers by JEL classification:
D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information
D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search, Learning, and Information

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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Jackson, Matthew O., 2005. "The economics of social networks," Working Papers 1237, California Institute of Technology, Division of the Humanities and Social Sciences. [Downloadable!]
  2. Lauren Cohen & Andrea Frazzini & Christopher Malloy, 2007. "The Small World of Investing: Board Connections and Mutual Fund Returns," NBER Working Papers 13121, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  3. Ellison, Glenn & Fudenberg, Drew, 1995. "Word-of-Mouth Communication and Social Learning," The Quarterly Journal of Economics, MIT Press, vol. 110(1), pages 93-125, February. [Downloadable!] (restricted)
  4. Antonio Mele, 2008. "Information Linkages and Correlated Trading," FMG Discussion Papers dp620, Financial Markets Group. [Downloadable!] (restricted)
  5. Mathias Dewatripont & Jean Tirole, 2005. "Modes of Communication," Journal of Political Economy, University of Chicago Press, vol. 113(6), pages 1217-1238, December. [Downloadable!] (restricted)
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  6. Hellmann, Thomas F & Perotti, Enrico C, 2006. "The Circulation of Ideas: Firms Versus Markets," CEPR Discussion Papers 5469, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
  7. Harrison Hong & Jeffrey D. Kubik & Jeremy C. Stein, 2005. "Thy Neighbor's Portfolio: Word-of-Mouth Effects in the Holdings and Trades of Money Managers," Journal of Finance, American Finance Association, vol. 60(6), pages 2801-2824, December. [Downloadable!] (restricted)
  8. Krishna, Vijay & Morgan, John, 2004. "The art of conversation: eliciting information from experts through multi-stage communication," Journal of Economic Theory, Elsevier, vol. 117(2), pages 147-179, August. [Downloadable!] (restricted)
  9. Aghion, Philippe & Howitt, Peter, 1992. "A Model of Growth through Creative Destruction," Econometrica, Econometric Society, vol. 60(2), pages 323-51, March. [Downloadable!] (restricted)
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  10. Crawford, Vincent P & Sobel, Joel, 1982. "Strategic Information Transmission," Econometrica, Econometric Society, vol. 50(6), pages 1431-51, November. [Downloadable!] (restricted)
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