Christopher M. Anderson () (Division of Humanities and Social Sciences, California Institute of Technology, Pasadena, CA 91125, USA) Colin F. Camerer () (Division of Humanities and Social Sciences, California Institute of Technology, Pasadena, CA 91125, USA)
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We apply Camerer and Ho's experience-weighted attraction (EWA) model of learning to extensive-form signaling games. Since these games often have many equilibria, logical `refinements' have been used to predict which equilibrium will occur. Brandts and Holt conjectured that belief formation could lead to less refined equilibria, and confirmed their conjecture experimentally. Our adaptation of EWA to signaling games includes a formalization of the Brandts-Holt belief formation idea as a special case. We find that the Brandts-Holt dynamic captures the direction of switching from one strategy to another, but does not capture the rate at which switching occurs. EWA does better at predicting the rate of switching (and also forecasts better than reinforcement models). Extensions of EWA which update unchosen signals by different functions of the set of unobserved foregone payoffs further improve predictive accuracy.
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Article provided by Springer in its journal Economic Theory.
Find related papers by JEL classification: C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games C92 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Group Behavior