Imitators and Optimizers in Cournot Oligopoly

Schipper, Burkhard C. (März 2005): Imitators and Optimizers in Cournot Oligopoly. SFB/TR 15 Discussion Paper No. 53

Abstract

We analyze a symmetric n-firm Cournot oligopoly with a heterogeneous population of optimizers and imitators. Imitators mimic the output decision of the most successful firms of the previous round a l`a Vega-Redondo (1997). Optimizers play a myopic best response to the opponents’ previous output. Firms are allowed to make mistakes and deviate from the decision rules with a small probability. Applying stochastic stability analysis, we find that the long run distribution converges to a recurrent set of states in which imitators are better off than are optimizers. This finding appears to be robust even when optimizers are more sophisticated. It suggests that imitators drive optimizers out of the market contradicting a fundamental conjecture by Friedman (1953).

• Dokumententyp: Paper
• Keywords: profit maximization hypothesis, bounded rationality, learning, Stackelberg
• Fakultät: Sonderforschungsbereiche > Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems ; Sonderforschungsbereiche > Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems > C4 - Experimentelle Analyse von rationalen und beschränkt rationalen Theorien des Marktverhaltens
• Themengebiete: 300 Sozialwissenschaften > 330 Wirtschaft
• JEL Classification: C72, D21, D43, L13
• Sprache: Englisch