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.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
Bibliographic InfoPaper provided by The Centre for Decision Research and Experimental Economics, School of Economics, University of Nottingham in its series Discussion Papers with number 2005-03.
Date of creation: Feb 2005
Date of revision:
Contact details of provider:
Postal: School of Economics University of Nottingham University Park Nottingham NG7 2RD
Phone: (44) 0115 951 5620
Fax: (0115) 951 4159
Web page: http://www.nottingham.ac.uk/economics/cedex/
More information through EDIRC
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," UFAE and IAE Working Papers 648.05, Unitat de Fonaments de l'Anàlisi Econòmica (UAB) and Institut d'Anàlisi Econòmica (CSIC).
- 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
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Selten, Reinhard & Apesteguia, Jose, 2005.
"Experimentally observed imitation and cooperation in price competition on the circle,"
Games and Economic Behavior,
Elsevier, vol. 51(1), pages 171-192, April.
- Reinhard Selten & Jose Apesteguia, 2002. "Experimentally Observed Imitation and Cooperation in Price Competition on the Circle," Bonn Econ Discussion Papers bgse19_2002, University of Bonn, Germany.
- Dufwenberg, Martin & Gneezy, Uri & Goeree, Jacob K. & Nagel, Rosemarie, 2002.
"Price Floors and Competition,"
Research Papers in Economics
2002:13, Stockholm University, Department of Economics.
- Theo Offerman & Jan Potters & Joep Sonnemans, 1997.
"Imitation and Belief Learning in an Oligopoly Experiment,"
Tinbergen Institute Discussion Papers
97-116/1, Tinbergen Institute.
- Theo Offerman & Jan Potters & Joep Sonnemans, 2002. "Imitation and Belief Learning in an Oligopoly Experiment," Review of Economic Studies, Oxford University Press, vol. 69(4), pages 973-997.
- Offerman, Theo & Potters, Jan & Sonnemans, Joep, 2002. "Imitation and Belief Learning in an Oligopoly Experiment," Review of Economic Studies, Wiley Blackwell, vol. 69(4), pages 973-97, October.
- Offerman, T.J.S. & Potters, J.J.M. & Sonnemans, J., 2002. "Imitation and belief learning in an oligopoly experiment," Open Access publications from Tilburg University urn:nbn:nl:ui:12-91663, Tilburg University.
- Robert Moir, 1998. "A Monte Carlo Analysis of the Fisher Randomization Technique: Reviving Randomization for Experimental Economists," Experimental Economics, Springer, vol. 1(1), pages 87-100, June.
- Huck, Steffen & Normann, Hans-Theo & Oechssler, Jorg, 1999.
"Learning in Cournot Oligopoly--An Experiment,"
Royal Economic Society, vol. 109(454), pages C80-95, March.
- Steffen Huck & Hans-Theo Normann & Jörg Oechssler, 2001.
"Two are Few and Four are Many: Number Effects in Experimental Oligopolies,"
Bonn Econ Discussion Papers
bgse12_2001, University of Bonn, Germany.
- Huck, Steffen & Normann, Hans-Theo & Oechssler, Jorg, 2004. "Two are few and four are many: number effects in experimental oligopolies," Journal of Economic Behavior & Organization, Elsevier, vol. 53(4), pages 435-446, April.
- Isaac, R. Mark & Reynolds, Stanley S., 1992. "Schumpeterian competition in experimental markets," Journal of Economic Behavior & Organization, Elsevier, vol. 17(1), pages 59-100, January.
- Dufwenberg, M. & Gneezy, U., 1998.
"Price Competition and Market COncentration: An Experimental Study,"
1998-08, Uppsala - Working Paper Series.
- Dufwenberg, Martin & Gneezy, Uri, 2000. "Price competition and market concentration: an experimental study," International Journal of Industrial Organization, Elsevier, vol. 18(1), pages 7-22, January.
- Dufwenberg, Martin & Gneezy, Uri, 1998. "Price Competition and Market Concentration: An Experimental Study," Working Paper Series 1998:8, Uppsala University, Department of Economics.
- Dufwenberg, M. & Gneezy, U., 1998. "Price competition and market concentration: An experimental study," Discussion Paper 1998-27, Tilburg University, Center for Economic Research.
- Dufwenberg, Martin & Gneezy, Uri, 1999. "Price Competition and Market Concentration: An experimental Study," Research Papers in Economics 1999:4, Stockholm University, Department of Economics.
- Reynolds, Stanley S & Isaac, R Mark, 1992. "Stochastic Innovation and Product Market Organization," Economic Theory, Springer, vol. 2(4), pages 525-45, October.
- Holt, Charles A & Langan, Loren W & Villamil, Anne P, 1986. "Market Power in Oral Double Auctions," Economic Inquiry, Western Economic Association International, vol. 24(1), pages 107-23, January.
- Dastidar, Krishnendu Ghosh, 1995. "On the Existence of Pure Strategy Bertrand Equilibrium," Economic Theory, Springer, vol. 5(1), pages 19-32, January.
- Abbink, Klaus & Abdolkarim Sadrieh, 1995. "RatImage - research Assistance Toolbox for Computer-Aided Human Behavior Experiments," Discussion Paper Serie B 325, University of Bonn, Germany.
- José Apesteguia & Martin Dufwenberg & Reinhard Selten, 2003.
"Blowing the Whistle,"
Bonn Econ Discussion Papers
bgse9_2003, University of Bonn, Germany.
- José Apesteguía & Martin Dufwenberg & Reinhard Selten, 2003. "Blowing the Whistle," Documentos de Trabajo - Lan Gaiak Departamento de EconomÃa - Universidad PÃºblica de Navarra 0303, Departamento de Economía - Universidad Pública de Navarra, revised 2003.
- Apesteguia, Jose & Dufwenberg, Martin & Selten, Reinhard, 2003. "Blowing the Whistle," Research Papers in Economics 2003:5, Stockholm University, Department of Economics.
- Abbink, Klaus & Brandts, Jordi, 2008. "24. Pricing in Bertrand competition with increasing marginal costs," Games and Economic Behavior, Elsevier, vol. 63(1), pages 1-31, May.
- Ivaldi, Marc & Jullien, Bruno & Rey, Patrick & Seabright, Paul & Tirole, Jean, 2003. "The Economics of Tacit Collusion," IDEI Working Papers 186, Institut d'Économie Industrielle (IDEI), Toulouse.
- Ruffle, Bradley J., 2009.
"When Do Large Buyers Pay Less? Experimental Evidence,"
16683, University Library of Munich, Germany.
- Bradley J. Ruffle, 2013. "When Do Large Buyers Pay Less? Experimental Evidence," Journal of Industrial Economics, Wiley Blackwell, vol. 61(1), pages 108-137, 03.
- Bradley J. Ruffle, 2009. "When Do Large Buyers Pay Less? Experimental Evidence," Working Papers 0910, Ben-Gurion University of the Negev, Department of Economics.
- Pedro Mendi & Róbert F. Veszteg, 2009.
"Sustainability of collusion: evidence from the late 19th century basque iron and steel industry,"
Fundación SEPI, vol. 33(3), pages 385-405, September.
- Pedro Mendi & Róbert F. Veszteg, . "Sustainability of Collusion: Evidence from the Late 19th Century Basque Iron and Steel Industry," Faculty Working Papers 04/07, School of Economics and Business Administration, University of Navarra.
- Goppelsroeder, Marie, 2009. "Entry in Collusive Markets: An Experimental Study," MPRA Paper 14707, University Library of Munich, Germany.
- Fonseca, Miguel A. & Normann, Hans-Theo, 2012.
"Excess capacity and pricing in Bertrand-Edgeworth markets: Experimental evidence,"
DICE Discussion Papers
67, Heinrich‐Heine‐Universität Düsseldorf, Düsseldorf Institute for Competition Economics (DICE).
- Miguel A. Fonseca & Hans-Theo Normann, 2013. "Excess Capacity and Pricing in Bertrand-Edgeworth Markets: Experimental Evidence," Journal of Institutional and Theoretical Economics (JITE), Mohr Siebeck, Tübingen, vol. 169(2), pages 199-228, June.
- Roel van Veldhuizen & Joep Sonnemans, 2011. "Nonrenewable Resources, Strategic Behavior and the Hotelling Rule: An Experiment," Tinbergen Institute Discussion Papers 11-014/1, Tinbergen Institute.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Suzanne Robey).
If references are entirely missing, you can add them using this form.