The invisible hand: Experiments on strategy selection in population games

Siegfried K. Berninghaus (), Karl-Martin Ehrhart () and Claudia Keser ()
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Siegfried K. Berninghaus: Universität Karlsruhe, Postal: RZ Zirkel 2 D-76128 Karlsruhe
Karl-Martin Ehrhart: Universitaet Karlsruhe, Postal: RZ Zirkel 2 D-76128 Karlsruhe
Claudia Keser: Institut für Statistik und Mathematische Wirtschaftstheorie, Postal: Universität Karlsruhe, Rechenzentrum, Zirkel 2, 76128 Karlsruhe

No 97-40, Sonderforschungsbereich 504 Publications from Sonderforschungsbereich 504, Universität Mannheim, Sonderforschungsbereich 504, University of Mannheim

Abstract: In an experimental evolutionary game framework we investigate whether subjects end up in a socially efficient state. We examine two games, a game where the socially efficient state is also an equilibrium and a game which has no equilibrium in pure strategies at all. Furthermore, we distinguish between a situation in which the subjects are completely informed about the payoff function and a situation in which they are incompletely informed. We observe that subjects spend the greater part of the time at or near the efficient state. If the efficient state is an equilibrium, they spend more time there than otherwise. Furthermore, incomplete information increases the time spent at the efficient state.

Pages: 19 pages
Date: 1997-11-19
Note: We are grateful to Madjid Amir for stimulating discussions. Financial support from the Deutsche Forschungsgemeinschaft, SFB 504, at the University of Mannheim, is gratefully acknowledged.
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