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Learning, Network Formation And Coordination

  • Fernando Vega Redondo

    (Instituto Valenciano de Investigaciones Económicas)

  • Sanjeev Goyal

    (Queen Mary, University of London)

In many economic and social contexts, individual players choose their partners and also decide on a mode of behavior in interactions with these partners. This paper develops a simple model to examine the interaction between partner choice and individual behavior in games of coordination. An important ingredient of our approach is the way we model partner choice: we suppose that a player can establish ties with other players by investing in costly pair-wise links. We show that individual efforts to balance the costs and benefits of links sharply restrict the range of stable interaction architectures; equilibrium networks are either complete or have the star architecture. Moreover, the process of network formation has powerful effects on individual behavior: if costs of forming links are low then players coordinate on the risk-dominant action, while if costs of forming links are high then they coordinate on the efficient action.

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File URL: http://www.ivie.es/downloads/docs/wpasad/wpasad-2001-19.pdf
File Function: Fisrt version / Primera version, 2001
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Paper provided by Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie) in its series Working Papers. Serie AD with number 2001-19.

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Length: 59 pages
Date of creation: Jun 2001
Publication status: Published by Ivie
Handle: RePEc:ivi:wpasad:2001-19
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  19. Kandori Michihiro & Rob Rafael, 1995. "Evolution of Equilibria in the Long Run: A General Theory and Applications," Journal of Economic Theory, Elsevier, vol. 65(2), pages 383-414, April.
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  24. John C. Harsanyi & Reinhard Selten, 1988. "A General Theory of Equilibrium Selection in Games," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262582384.
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