Collusion in Growing and Shrinking Markets: Empirical Evidence from Experimental Duopolies
AbstractWe study collusive behaviour in experimental duopolies that compete in prices under dynamic demand conditions. In one treatment the demand grows at a constant rate. In the other treatment the demand declines at another constant rate. The rates are chosen so that the evolution of the demand in one case is just the reverse in time than the one for the other case. We use a box-design demand function so that there are no issues of finding and co-ordinating on the collusive price. Contrary to game-theoretic reasoning, our results show that collusion is significantly larger when the demand shrinks than when it grows. We conjecture that the prospect of rapidly declining profit opportunities exerts a disciplining effect on firms that facilitates collusion and discourages deviation.
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Bibliographic InfoPaper provided by Unitat de Fonaments de l'Anàlisi Econòmica (UAB) and Institut d'Anàlisi Econòmica (CSIC) in its series UFAE and IAE Working Papers with number 648.05.
Date of creation: 01 Feb 2005
Date of revision:
Laboratory experiments; industrial organisation; oligopoly; price competition; collusion;
Other versions of this item:
- Klaus Abbink & Jordi Brandts, 2005. "Collusion in Growing and Shrinking Markets: Empirical Evidence from Experimental Duopolies," Discussion Papers 2005-03, The Centre for Decision Research and Experimental Economics, School of Economics, University of Nottingham.
- C90 - Mathematical and Quantitative Methods - - Design of Experiments - - - General
- C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
- D43 - Microeconomics - - Market Structure and Pricing - - - Oligopoly and Other Forms of Market Imperfection
- D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search, Learning, and Information
- L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
This paper has been announced in the following NEP Reports:
- NEP-ALL-2005-06-14 (All new papers)
- NEP-COM-2005-06-14 (Industrial Competition)
- NEP-EXP-2005-06-14 (Experimental Economics)
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