Information and Learning in Oligopoly: An Experiment
University of Bologna - Department of Economics
University of Bologna
January 7, 2013
Quaderni DSE Working Paper No. 860
This paper presents an experiment on learning in repeated games, which complements the analysis of players' actual choices with data on the information acquisition process they follow. Subjects play a repeated Cournot oligopoly, with limited a priori information. The econometrics hinges on a model built upon Experience Weighted Attraction learning, and the simultaneous analysis of data on the information gathered and on actions taken by the subjects. Results suggest that learning is a composite process, in which different components coexist. Adaptive learning emerges as the leading element, but when subjects look at the strategies individually adopted by their competitors they tend to imitate the most successful behavior, which makes markets more competitive. Reinforcement learning also plays a role, as subjects favor strategies that have yielded higher profits in the past.
Number of Pages in PDF File: 68
Keywords: information, imitation, Cournot oligopoly, EWA learning
JEL Classification: L13, C92, C72
Date posted: January 7, 2013
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