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Equilibrium Binding Agreements under Diverse Bahavioral Assumptions

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  • Effrosyni Diamantoudi

    ()
    (Department of Economics, University of Aarhus, Denmark)

Abstract

This paper analyzes cartel stability when firms are farsighted. It studies a price leadership model a la D' Aspremont et al. (1983), where the dominant cartel acts as a leader by determining the market price, while the fringe behaves competitively. According to D' Aspremont et al.'s (1983) approach a cartel is stable if no firm has an incentive to either enter or exit the cartel. In deciding whether to deviate or not, a firm compares its status quo with the outcome its unilateral deviation induces. However, the firm fails to examine whether the induced outcome will indeed become the new status quo that will determine its profits. Although the firm anticipates the price adjustment following its deviation, it ignores the possibility that more firms may exit (or enter) the cartel that may eventually stabilize in a very different situation from the one the firm riginally induced. In other words, the firm does not consider the fact that the outcome immediately induced by its deviation may not be stable itself. We propose a notion of cartel stability that allows firms to fully foresee the result of their deviation. Our solution concept is built in the spirit of von Neumann and Morgenstern's (1944) stable set, while it modifies the dominance relation following Harsanyi's (1974) criticism.We show that there always exists a unique, non-empty set of stable cartels and provide an algorithm the determines it.

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Bibliographic Info

Paper provided by School of Economics and Management, University of Aarhus in its series Economics Working Papers with number 2001-9.

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Length: 22
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Handle: RePEc:aah:aarhec:2001-9

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Web page: http://www.econ.au.dk/afn/

Related research

Keywords: Cartel stability; Foresight; Coalition Formation;

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References

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  1. Xue, Licun, 2002. "Stable agreements in infinitely repeated games," Mathematical Social Sciences, Elsevier, vol. 43(2), pages 165-176, March.
  2. Effrosyni Diamantoudi & Licun Xue, 2003. "Farsighted stability in hedonic games," Social Choice and Welfare, Springer, vol. 21(1), pages 39-61, 08.
  3. Elliott, Graham & Jansson, Michael, 2000. "Testing for Unit Roots with Stationary Covariances," University of California at San Diego, Economics Working Paper Series qt47k7z69n, Department of Economics, UC San Diego.
  4. Paul Auerbach & Peter Skott, . "Skill Asymmetries, Increasing Wage Inequality and Unemployment," Economics Working Papers 2000-18, School of Economics and Management, University of Aarhus.
  5. Claude d'Aspremont & Alexis Jacquemin & Jean Jaskold Gabszewicz & John A. Weymark, 1983. "On the Stability of Collusive Price Leadership," Canadian Journal of Economics, Canadian Economics Association, vol. 16(1), pages 17-25, February.
  6. Michael Rosholm & Michael Svarer, . "Structurally Dependent Competing Risks," Economics Working Papers 2000-11, School of Economics and Management, University of Aarhus.
  7. Niels Haldrup & Peter Lildholdt, 2005. "Local power functions of tests for double unit roots," Statistica Neerlandica, Netherlands Society for Statistics and Operations Research, vol. 59(2), pages 159-179.
  8. Jamsheed Shorish, . "Quasi-Static Macroeconomic Systems," Economics Working Papers 2000-3, School of Economics and Management, University of Aarhus.
  9. Ray, D. & Vohra, R., 1996. "A Theory of Endogenous Coalition Structure," Papers 68, Boston University - Industry Studies Programme.
  10. Ray, Debraj & Vohra, Rajiv, 1997. "Equilibrium Binding Agreements," Journal of Economic Theory, Elsevier, vol. 73(1), pages 30-78, March.
  11. Boriss Siliverstovs, 2005. "The Bi-parameter Smooth Transition Autoregressive model," Economics Bulletin, AccessEcon, vol. 3(23), pages 1-11.
  12. Effrosyni Diamantoudi, . "Equilibrium Binding Agreements under Diverse Bahavioral Assumptions," Economics Working Papers 2001-9, School of Economics and Management, University of Aarhus.
  13. Licun Xue, 1998. "Coalitional stability under perfect foresight," Economic Theory, Springer, vol. 11(3), pages 603-627.
  14. Bernheim, B. Douglas & Peleg, Bezalel & Whinston, Michael D., 1987. "Coalition-Proof Nash Equilibria I. Concepts," Journal of Economic Theory, Elsevier, vol. 42(1), pages 1-12, June.
  15. Licun Xue, . "A Notion of Consistent Rationalizability - Between Weak and Pearce's Extensive Form Rationalizability," Economics Working Papers 2000-4, School of Economics and Management, University of Aarhus.
  16. Jakob Roland Munch & Michael Svarer, . "Mortality and Socio-economic Differences in a Competing Risks Model," Economics Working Papers 2001-1, School of Economics and Management, University of Aarhus.
  17. Peter Skott, . "Demand Policy in the Long Run," Economics Working Papers 2000-17, School of Economics and Management, University of Aarhus.
  18. Donsimoni, Marie-Paule & Economides, Nicholas S & Polemarchakis, Herakles M, 1986. "Stable Cartels," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 27(2), pages 317-27, June.
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Citations

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Cited by:
  1. Albert Banal-Estañol & Inés Macho-Stadler & Jo Seldeslachts, 2004. "Mergers, Investment Decisions and Internal Organisation," Working Papers 111, Barcelona Graduate School of Economics.
  2. Effrosyni Diamantoudi, . "Equilibrium Binding Agreements under Diverse Bahavioral Assumptions," Economics Working Papers 2001-9, School of Economics and Management, University of Aarhus.
  3. James Lake & Halis M. Yildiz, 2014. "On the different geographic characteristics of Free Trade Agreements and Customs Unions," Departmental Working Papers 1403, Southern Methodist University, Department of Economics.
  4. Sheng-Chieh Huang & Xiao Luo, 2008. "Stability, sequential rationality, and subgame consistency," Economic Theory, Springer, vol. 34(2), pages 309-329, February.
  5. Roland Pongou & Lawrence Diffo Lambo & Bertrand Tchantcho, 2008. "Cooperation, stability and social welfare under majority rule," Economic Theory, Springer, vol. 35(3), pages 555-574, June.

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