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Word-of-Mouth Communication and Social Learning

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  • Fudenberg, Drew
  • Ellison, Glenn

Abstract

This paper studies the way that word-of-mouth communication aggregates the information of individual agents. We find that the structure of the communication process determines whether all agents end up making identical choices, with less communication making this conformity more likely. Despite the players' naive decision rules and the stochastic decision environment, word-of-mouth communication may lead all players to adopt the action that is on average superior. These socially efficient outcomes tend to occur when each agent samples only a few others.

Suggested Citation

  • Fudenberg, Drew & Ellison, Glenn, 1995. "Word-of-Mouth Communication and Social Learning," Scholarly Articles 3196300, Harvard University Department of Economics.
  • Handle: RePEc:hrv:faseco:3196300
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    References listed on IDEAS

    as
    1. Alan Kirman, 1993. "Ants, Rationality, and Recruitment," The Quarterly Journal of Economics, Oxford University Press, vol. 108(1), pages 137-156.
    2. Abhijit V. Banerjee, 1993. "The Economics of Rumours," Review of Economic Studies, Oxford University Press, vol. 60(2), pages 309-327.
    3. Dennis E. Smallwood & John Conlisk, 1979. "Product Quality in Markets Where Consumers are Imperfectly Informed," The Quarterly Journal of Economics, Oxford University Press, vol. 93(1), pages 1-23.
    4. Ellison, Glenn & Fudenberg, Drew, 1993. "Rules of Thumb for Social Learning," Journal of Political Economy, University of Chicago Press, vol. 101(4), pages 612-643, August.
    5. Mark A. Satterthwaite, 1979. "Consumer Information, Equilibrium Industry Price, and the Number of Sellers," Bell Journal of Economics, The RAND Corporation, vol. 10(2), pages 483-502, Autumn.
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