Duopoly Competition, Escape Dynamics and Non-cooperative Collusion
In this paper, we study an imperfect monitoring model of duopoly under similar settings as in Green and Porter (1984), but here firms do not know the demand parameters and learn about them over time though the price signals. We investigate how a deviation from rational expectations affects the decision making process and what kind of behavior is sustainable in equilibrium. We find that the more common information firms analyze to update their beliefs, the more room is for implicit coordination. This might propagate escapes from the Cournot- Nash Equilibrium and the formation of cartels without explicit cooperative motives. In contrast to Green and Porter (1984), our results show that in a model with learning, breakdown of a cartel happens even without a demand shock. Moreover, in this model an expected price serves as an endogenous price threshold, which triggers a price war. Finally, by investigating the durations of the cooperative and price war phases, we find that in industries with a higher Nash equilibrium output and a lower volatility of firm-specific shocks, it is easier to maintain a cartel and harder to break it down.
|Date of creation:||Sep 2011|
|Date of revision:|
|Contact details of provider:|| Postal: |
Phone: (+420) 224 005 123
Fax: (+420) 224 005 333
Web page: http://www.cerge-ei.cz
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.:
- Mirman, Leonard J & Samuelson, Larry & Urbano, Amparo, 1993.
"Duopoly Signal Jamming,"
Springer, vol. 3(1), pages 129-49, January.
- Dilip Abreu & David Pearce & Ennio Stacchetti, 1997. "Optimal Cartel Equilibria with Imperfect monitoring," Levine's Working Paper Archive 632, David K. Levine.
- Keller, Godfrey & Rady, Sven, 1999.
"Optimal Experimentation in a Changing Environment,"
Review of Economic Studies,
Wiley Blackwell, vol. 66(3), pages 475-507, July.
- Godfrey Keller & Sven Rady, 1997. "Optimal Experimentation in a Changing Environment," STICERD - Theoretical Economics Paper Series /1997/333, Suntory and Toyota International Centres for Economics and Related Disciplines, LSE.
- Godfrey Keller & Sven Rady, 1998. "Optimal Experimentation in a Changing Environment," Game Theory and Information 9801001, EconWPA.
- Skrzypacz, Andrzej & Sannikov, Yuliy, 2005.
"Impossibility of Collusion under Imperfect Monitoring with Flexible Production,"
1887, Stanford University, Graduate School of Business.
- Yuliy Sannikov & Andrzej Skrzypacz, 2007. "Impossibility of Collusion under Imperfect Monitoring with Flexible Production," American Economic Review, American Economic Association, vol. 97(5), pages 1794-1823, December.
- Yuliy Sannikov & Andrzej Skrzypacz, 2004. "Impossibility of Collusion under Imperfect Monitoring with Flexible Production," 2004 Meeting Papers 418, Society for Economic Dynamics.
- Mirman Leonard J. & Samuelson Larry & Schlee Edward E., 1994.
"Strategic Information Manipulation in Duopolies,"
Journal of Economic Theory,
Elsevier, vol. 62(2), pages 363-384, April.
- Mirman, L.J. & Samuelson, L. & Schlee, E.E., 1991. "Strategic Information Manupulation in Duopolies," Papers 9137, Tilburg - Center for Economic Research.
- Mirman, L.J. & Samuelson, L. & Schlee, E.E., 1991. "Strategic information manipulation in duopolies," Discussion Paper 1991-37, Tilburg University, Center for Economic Research.
- Abreu, Dilip & Pearce, David & Stacchetti, Ennio, 1986. "Optimal cartel equilibria with imperfect monitoring," Journal of Economic Theory, Elsevier, vol. 39(1), pages 251-269, June.
- Martin Ellison & Andrew Scott, 2009.
"Learning and Price Volatility in Duopoly Models of Resource Depletion,"
OxCarre Working Papers
025, Oxford Centre for the Analysis of Resource Rich Economies, University of Oxford.
- Ellison, Martin & Scott, Andrew, 2013. "Learning and price volatility in duopoly models of resource depletion," Journal of Monetary Economics, Elsevier, vol. 60(7), pages 806-820.
- Ellison, Martin & Scott, Andrew, 2009. "Learning and Price Volatility in Duopoly Models of Resource Depletion," CEPR Discussion Papers 7378, C.E.P.R. Discussion Papers.
- Balvers, Ronald J & Cosimano, Thomas F, 1990. "Actively Learning about Demand and the Dynamics of Price Adjustment," Economic Journal, Royal Economic Society, vol. 100(402), pages 882-98, September.
When requesting a correction, please mention this item's handle: RePEc:cer:papers:wp445. 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: (Jana Koudelkova)
If references are entirely missing, you can add them using this form.