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Stability and Equilibrium Selection in a Link Formation Game

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Author Info
Rodrigo J. Harrison (UTFSM Chile and Georgetown University USA)
Roberto Munoz (University of Maryland)
Abstract

In this paper we use a non cooperative equilibrium selection approach as a notion of stability in link formation games. Specifically, we follow the global games approach first introduced by Carlsson and van Damme (1993), to study the robustness of the set of Nash equilibria for a class of link formation games in strategic form with supermodular payoff functions. Interestingly, the equilibrium selected is in conflict with those predicted by the traditional cooperative refinements. Moreover, we get a conflict between stability and efficiency even when no such conflict exists with the cooperative refinements. We discuss some practical issues that these different theoretical approaches raise in reality. The paper also provides an extension of the global game theory that can be applied beyond network literature.

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Paper provided by EconWPA in its series Game Theory and Information with number 0306004.

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Length: 45 pages
Date of creation: 25 Jun 2003
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Handle: RePEc:wpa:wuwpga:0306004

Note: Type of Document - Acrobat PDF; pages: 45
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Related research
Keywords: Global Games; Equilibrium Selection; Networks.;

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Find related papers by JEL classification:
C70 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - General
D20 - Microeconomics - - Production and Organizations - - - General
D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information

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