An Experimental Study of Behavior and Cognition from the Perspective of Inductive Game Theory
2011/06/17
研討會日期 : 2011-06-17
時間 : 14:00
主講人 : Professor Mamoru Kaneko
地點 : Conference Room B110
演講者簡介 : Mamoru Kaneko got his Ph.D. in Information Sciences from Tokyo Institute of Technology in 1979. He is currently serving as Professor of Institute of Policy and Planning Sciences at University of Tsukuba. His research field is in game theory, economic theory, mathematical Logic, and ethical theory.
演講摘要 : We conduct an experimental study on behavior and cognition in prisoner’s dilemmas with and without role-switching from the perspective of inductive game theory (IGT). It is basic for our study that subjects have no prior knowledge about any payoffs, even their own; they may learn them by repeated play. Without role-switching, many subjects learned relevant payoffs successfully and played a dominant strategy consistently with predictions of IGT. With role-switching, IGT makes two behavioral predictions: one is a Nash equilibrium, and the other is maximization of the sum of payoffs. These two alternatives were observed for many matched pairs of subjects. We study subjects’ understandings of payoffs by analyzing their answers to a questionnaire given after the experiment, and look into the relations to behaviors; we find that behavior is often determined by the learned payoffs. We present a model of individual behavior based on the basic postulates of IGT, which allows us to conduct various statistical hypothesis tests for the behavior data. One test shows some statistical (history-) independence of subjects’ behavior. Our study not only supports but also sharpens the basic postulates of IGT.
