Arbeitspapier

Independence, Heterogeneity and Uniqueness in Interaction Games

This paper shows that incomplete information and sufficient heterogeneity of players can ensure uniqueness in interaction games. In contrast to recent work on uniqueness in interaction games, we do not require strategic complementarity. There are two parts to the argument. First, if a player’s signal is sufficiently uninformative of the signals of its opponents (in the sense of the Fisher information of the signal), then the player’s best response to any strategy profile of its opponents is non-decreasing in its signal. Secondly, a contraction mapping argument shows that sufficient heterogeneity ensures that equilibrium is unique.

Language
Englisch

Bibliographic citation
Series: IEHAS Discussion Papers ; No. MT-DP - 2003/3

Classification
Wirtschaft
Noncooperative Games
Asymmetric and Private Information; Mechanism Design
Subject
Co-ordination
Interaction games
Heterogeneity
Unique equilibrium

Event
Geistige Schöpfung
(who)
Mason, Robin
Valentinyi, Akos
Event
Veröffentlichung
(who)
Hungarian Academy of Sciences, Institute of Economics
(where)
Budapest
(when)
2003

Handle
Last update
10.03.2025, 11:42 AM CET

Data provider

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Object type

  • Arbeitspapier

Associated

  • Mason, Robin
  • Valentinyi, Akos
  • Hungarian Academy of Sciences, Institute of Economics

Time of origin

  • 2003

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