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Global Games with Strategic Substitutes

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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 payo. functions. Interestingly, the equilibrium selected is in conflict with those predicted by the traditional cooperative refinements. Moreover, we get a conflict between stability and e.ciency even when no such conflict exists with the cooperative refinements. We discuss some practical issues that these di.erent 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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  • Rodrigo Harrison & Roberto Munoz, 2003. "Global Games with Strategic Substitutes," Working Papers gueconwpa~03-03-07, Georgetown University, Department of Economics.
    • Handle: RePEc:geo:guwopa:gueconwpa~03-03-07
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    Cited by:

    1. Eric Hoffmann, 2013. "Global Games Selection in Games with Strategic Substitutes or Complements," WORKING PAPERS SERIES IN THEORETICAL AND APPLIED ECONOMICS 201308, University of Kansas, Department of Economics.
    2. Rodrigo Harrison & Pedro Jara‐Moroni, 2021. "Global Games With Strategic Substitutes," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 62(1), pages 141-173, February.
    3. Harrison, Rodrigo & Jara-Moroni, Pedro, 2015. "A dominance solvable global game with strategic substitutes," Journal of Mathematical Economics, Elsevier, vol. 57(C), pages 1-11.
    4. Hoffmann, Eric J. & Sabarwal, Tarun, 2019. "Global games with strategic complements and substitutes," Games and Economic Behavior, Elsevier, vol. 118(C), pages 72-93.
    5. Rosenkranz, Stephanie & Weitzel, Utz, 2012. "Network structure and strategic investments: An experimental analysis," Games and Economic Behavior, Elsevier, vol. 75(2), pages 898-920.
    6. Roy, Sunanda & Sabarwal, Tarun, 2012. "Characterizing stability properties in games with strategic substitutes," Games and Economic Behavior, Elsevier, vol. 75(1), pages 337-353.
    7. Eric J. Hoffmann & Tarun Sabarwal, 2018. "Monotone Global Games," WORKING PAPERS SERIES IN THEORETICAL AND APPLIED ECONOMICS 201903, University of Kansas, Department of Economics.
    8. repec:use:tkiwps:2424 is not listed on IDEAS

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    More about this item

    Keywords

    Games; Networks; Equilibrium Selection.;
    All these keywords.

    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; Mechanism Design

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