Counterintuitive Number Effects in Experimental Oligopolies
Recent theoretical research on oligopolistic competition suggests that under certain conditions prices increase with the number of competing firms. However, this counterintuitive result is based on comparative-static analyses which neglect the importance of dynamic strategies in naturally-occurring markets. When firms compete repeatedly, supra-competitive prices can become sustainable but this is arguably more difficult when more firms operate in the market. This paper reports the results of laboratory experiments investigating pricing behavior in a setting in which (static) theory predicts the counterintuitive number effect. Under a random matching protocol, which retains much of the one-shot nature of the model, the data corroborates the gametheoretic prediction. Under fixed matching duopolists post substantially higher prices, whereas prices in quadropolies remain very similar. As a result, the predicted effect is no longer observed, and towards the end the reverse effect is observed.
To our knowledge, this item is not available for
download. To find whether it is available, there are three
1. Check below under "Related research" whether another version of this item is available online.
2. Check on the provider's web page whether it is in fact available.
3. Perform a search for a similarly titled item that would be available.
|Date of creation:||Dec 2006|
|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
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.:
- Kreps, David M. & Milgrom, Paul & Roberts, John & Wilson, Robert, 1982.
"Rational cooperation in the finitely repeated prisoners' dilemma,"
Journal of Economic Theory,
Elsevier, vol. 27(2), pages 245-252, August.
- David Kreps & Paul Milgrom & John Roberts & Bob Wilson, 2010. "Rational Cooperation in the Finitely Repeated Prisoners' Dilemma," Levine's Working Paper Archive 239, David K. Levine.
- Andreoni,J. & Croson,R., 1998.
"Partners versus strangers : random rematching in public goods experiments,"
11, Wisconsin Madison - Social Systems.
- Andreoni, James & Croson, Rachel, 2008. "Partners versus Strangers: Random Rematching in Public Goods Experiments," Handbook of Experimental Economics Results, Elsevier.
- James Andreoni & Rachel Croson, 2001. "Partners versus Strangers: Random Rematching in Public Goods Experiments," Levine's Working Paper Archive 563824000000000132, David K. Levine.
- Holt, Charles A, 1985. "An Experimental Test of the Consistent-Conjectures Hypothesis," American Economic Review, American Economic Association, vol. 75(3), pages 314-325, June.
- 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," Papers 1998-08, Uppsala - Working Paper Series.
- Dufwenberg, Martin & Gneezy, Uri, 1999. "Price Competition and Market Concentration: An experimental Study," Research Papers in Economics 1999:4, Stockholm University, Department of Economics.
- Hans-Theo Normann & Brian Wallace, 2012.
"The impact of the termination rule on cooperation in a prisoner’s dilemma experiment,"
International Journal of Game Theory,
Springer;Game Theory Society, vol. 41(3), pages 707-718, August.
- Normann, Hans-Theo & Wallace, Brian, 2011. "The impact of the termination rule on cooperation in a prisoner's dilemma experiment," DICE Discussion Papers 19, Düsseldorf Institute for Competition Economics (DICE), University of Düsseldorf.
- Cary A. Deck & Bart J. Wilson, 2003. "Automated Pricing Rules in Electronic Posted Offer Markets," Economic Inquiry, Western Economic Association International, vol. 41(2), pages 208-223, April.
- E. H. Chamberlin, 1929. "Duopoly: Value Where Sellers Are Few," The Quarterly Journal of Economics, Oxford University Press, vol. 44(1), pages 63-100.
- Abreu, Dilip, 1986. "Extremal equilibria of oligopolistic supergames," Journal of Economic Theory, Elsevier, vol. 39(1), pages 191-225, June.
- Stiglitz, Joseph E, 1987. "Competition and the Number of Firms in a Market: Are Duopolies More Competitive than Atomistic Markets?," Journal of Political Economy, University of Chicago Press, vol. 95(5), pages 1041-1061, October.
When requesting a correction, please mention this item's handle: RePEc:not:notcdx:2006-22. See general information about how to correct material in RePEc.
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.