Multimarket Contact, Imperfect Monitoring, and Implicit Collusion
This paper presents a theoretical foundation of the possibility that multimarket contact enhances firms' abilities to sustain implicit collusion. When firms operate in a single market and cannot perfectly monitor the opponents' choices of supply, it is impossible to achieve efficiency among these firms in a self-enforcing way, even though these firms have the long-term strategic relationship. By using models of infinitely repeated game with discounting, we shows that when firms encounter each other in a number of distinct markets and the degree of multimarket contact is large enough, efficiency can be approximately sustained by a subgame perfect equilibrium. This efficiency theorem in the imperfect monitoring case holds under almost the same condition on the discount factor as the perfect monitoring case.
|Date of creation:||Oct 1998|
|Date of revision:|
|Contact details of provider:|| Postal: |
Web page: http://www.cirje.e.u-tokyo.ac.jp/index.html
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.:
- Michihiro Kandori & Hitoshi Matsushima, 1997. "Private observation and Communication and Collusion," Levine's Working Paper Archive 1256, David K. Levine.
- Corwin D. Edwards, 1955. "Conglomerate Bigness as a Source of Power," NBER Chapters, in: Business Concentration and Price Policy, pages 331-359 National Bureau of Economic Research, Inc.
- Dilip Abreu & Paul Milgrom & David Pearce, 1997.
"Information and timing in repeated partnerships,"
Levine's Working Paper Archive
636, David K. Levine.
- Edward J Green & Robert H Porter, 1997.
"Noncooperative Collusion Under Imperfect Price Information,"
Levine's Working Paper Archive
1147, David K. Levine.
- Green, Edward J & Porter, Robert H, 1984. "Noncooperative Collusion under Imperfect Price Information," Econometrica, Econometric Society, vol. 52(1), pages 87-100, January.
- Green, Edward J. & Porter, Robert H., 1982. "Noncooperative Collusion Under Imperfect Price Information," Working Papers 367, California Institute of Technology, Division of the Humanities and Social Sciences.
- Michihiro Kandori & Hitoshi Matsushima, 1998. "Private Observation, Communication and Collusion," Econometrica, Econometric Society, vol. 66(3), pages 627-652, May.
- Bulow, Jeremy I & Geanakoplos, John D & Klemperer, Paul D, 1985. "Multimarket Oligopoly: Strategic Substitutes and Complements," Journal of Political Economy, University of Chicago Press, vol. 93(3), pages 488-511, June.
- Radner, Roy & Myerson, Roger & Maskin, Eric, 1986. "An Example of a Repeated Partnership Game with Discounting and with Uniformly Inefficient Equilibria," Review of Economic Studies, Wiley Blackwell, vol. 53(1), pages 59-69, January.
- B. Douglas Bernheim & Michael D. Whinston, 1990. "Multimarket Contact and Collusive Behavior," RAND Journal of Economics, The RAND Corporation, vol. 21(1), pages 1-26, Spring.
- Matsushima, Hitoshi, 1989. "Efficiency in repeated games with imperfect monitoring," Journal of Economic Theory, Elsevier, vol. 48(2), pages 428-442, August.
- Fudenberg, Drew & Levine, David I & Maskin, Eric, 1994.
"The Folk Theorem with Imperfect Public Information,"
Econometric Society, vol. 62(5), pages 997-1039, September.
- Drew Fudenberg & David K. Levine & Eric Maskin, 1994. "The Folk Theorem with Imperfect Public Information," Levine's Working Paper Archive 2058, David K. Levine.
- Drew Fudenberg & David K. Levine & Eric Maskin, 1994. "The Folk Theorem with Imperfect Public Information," Levine's Working Paper Archive 394, David K. Levine.
- Fudenberg, D. & Levine, D.K. & Maskin, E., 1989. "The Folk Theorem With Inperfect Public Information," Working papers 523, Massachusetts Institute of Technology (MIT), Department of Economics.
- Radner, Roy, 1986. "Repeated Partnership Games with Imperfect Monitoring and No Discounting," Review of Economic Studies, Wiley Blackwell, vol. 53(1), pages 43-57, January.
- Abreu, Dilip, 1988. "On the Theory of Infinitely Repeated Games with Discounting," Econometrica, Econometric Society, vol. 56(2), pages 383-96, March.
- Friedman, James W, 1971. "A Non-cooperative Equilibrium for Supergames," Review of Economic Studies, Wiley Blackwell, vol. 38(113), pages 1-12, January.
When requesting a correction, please mention this item's handle: RePEc:tky:fseres:98cf24. 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: (CIRJE administrative office)
If references are entirely missing, you can add them using this form.