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Global Games Selection in Games with Strategic Substitutes or Complements

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  • Eric Hoffmann

    (Department of Economics, The University of Kansas)

Abstract

Global games methods are aimed at resolving issues of multiplicity of equilibria and coordination failure that arise in game theoretic models by relaxing common knowledge assumptions about an underlying parameter. These methods have recently received a lot of attention when the underlying complete information game is one of strategic complements (GSC). Little has been done in this direction concerning games of strategic substitutes (GSS), however. This paper complements the existing literature in both cases by extending the global games method developed by Carlsson and Van Damme (1993) to N-player, multi-action GSS and GSC, using a p-dominance condition as the selection criterion. Moreover, this approach is much less restrictive on the conditions that players and the underlying parameter space must satisfy, and therefore serves to circumvent recent criticisms to global games methods. The second part of this paper generalizes the model by allowing groups of players to receive homogenous signals, which, under certain conditions, strengthens the model's power of predictability.

Suggested Citation

  • 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.
  • Handle: RePEc:kan:wpaper:201308
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    File URL: http://www2.ku.edu/~kuwpaper/2013Papers/201308.pdf
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    References listed on IDEAS

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    1. Van Zandt, Timothy, 2010. "Interim Bayesian Nash equilibrium on universal type spaces for supermodular games," Journal of Economic Theory, Elsevier, vol. 145(1), pages 249-263, January.
    2. Roy, Sunanda & Sabarwal, Tarun, 2012. "Characterizing stability properties in games with strategic substitutes," Games and Economic Behavior, Elsevier, vol. 75(1), pages 337-353.
    3. Frankel, David M. & Morris, Stephen & Pauzner, Ady, 2003. "Equilibrium selection in global games with strategic complementarities," Journal of Economic Theory, Elsevier, vol. 108(1), pages 1-44, January.
    4. Roy, Sunanda & Sabarwal, Tarun, 2010. "Monotone comparative statics for games with strategic substitutes," Journal of Mathematical Economics, Elsevier, vol. 46(5), pages 793-806, September.
    5. van Damme, E.E.C. & Carlsson, H., 1993. "Equilibrium selection in stag hunt games," Other publications TiSEM 8951ae88-c6e4-42e6-b253-b, Tilburg University, School of Economics and Management.
    6. Atsushi Kajii & Stephen Morris, 1997. "The Robustness of Equilibria to Incomplete Information," Econometrica, Econometric Society, vol. 65(6), pages 1283-1310, November.
    7. Rodrigo Harrison, 2003. "Global Games with Strategic Substitutes," Working Papers gueconwpa~03-03-06, Georgetown University, Department of Economics.
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