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Conjectural cost variations in a differentiated good oligopoly

  • Jurgan, Jens
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    In the homogenous good case, the relationship between market structure and efficiency was studied extensively. Assuming a standard quadratic utility with quantity competition, this paper carries on the analysis in a differentiated good context. It can be shown that there is a positive relationship between market heterogeneity and efficiency, too. In contrast to the homogenous good case, consumer surplus as well as producer surplus increases with the dispersion of marginal costs.

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    Paper provided by University of Würzburg, Chair for Monetary Policy and International Economics in its series W.E.P. - Würzburg Economic Papers with number 80.

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    Date of creation: 2009
    Date of revision:
    Handle: RePEc:zbw:wuewep:80
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    1. Berg, L. & Bergstrom, R., 1993. "Consumption, Income, Wealth and Household Debt - n Econometric Analysis of the Swedish Experience 1970- 1992," Papers 1993-12, Uppsala - Working Paper Series.
    2. Judy Hsu & X. Wang, 2005. "On Welfare under Cournot and Bertrand Competition in Differentiated Oligopolies," Review of Industrial Organization, Springer, vol. 27(2), pages 185-191, 09.
    3. Joseph Farrell and Carl Shapiro., 1988. "Horizontal Mergers: An Equilibrium Analysis," Economics Working Papers 8880, University of California at Berkeley.
    4. Bester, H. & Petrakis, E., 1991. "The Incentives for Cost Reduction in a Differentiated Industry," Papers 9136, Tilburg - Center for Economic Research.
    5. Jingang Zhao, 1999. "A Characterization of the Negative Welfare Effects of Cost Reduction in Cournot Oligopoly," Working Papers 99-06, Ohio State University, Department of Economics.
    6. Long, Ngo Van & Soubeyran, Antoine, 2001. "Cost Manipulation Games in Oligopoly, with Costs of Manipulating," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 42(2), pages 505-33, May.
    7. Lahiri, Sajal & Ono, Yoshiyasu, 1988. "Helping Minor Firms Reduces Welfare," Economic Journal, Royal Economic Society, vol. 98(393), pages 1199-1202, December.
    8. Kimmel, Sheldon, 1992. "Effects of Cost Changes on Oligopolists' Profits," Journal of Industrial Economics, Wiley Blackwell, vol. 40(4), pages 441-49, December.
    9. Symeonidis, George, 2003. "Quality heterogeneity and welfare," Economics Letters, Elsevier, vol. 78(1), pages 1-7, January.
    10. Fevrier, Philippe & Linnemer, Laurent, 2004. "Idiosyncratic shocks in an asymmetric Cournot oligopoly," International Journal of Industrial Organization, Elsevier, vol. 22(6), pages 835-848, June.
    11. Donald Smythe & Jingang Zhao, 2006. "The Complete Welfare Effects of Cost Reductions in a Cournot Oligopoly," Journal of Economics, Springer, vol. 87(2), pages 181-193, 03.
    12. Piercarlo Zanchettin, 2006. "Differentiated Duopoly with Asymmetric Costs," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 15(4), pages 999-1015, December.
    13. Häckner, Jonas, 1999. "A Note on Price and Quantity Competition in Differentiated Oligopolies," Research Papers in Economics 1999:9, Stockholm University, Department of Economics.
    14. Amir, Rabah & Jin, Jim Y., 2001. "Cournot and Bertrand equilibria compared: substitutability, complementarity and concavity," International Journal of Industrial Organization, Elsevier, vol. 19(3-4), pages 303-317, March.
    15. Wang, X. Henry & Zhao, Jingang, 2007. "Welfare reductions from small cost reductions in differentiated oligopoly," International Journal of Industrial Organization, Elsevier, vol. 25(1), pages 173-185, February.
    16. Nirvikar Singh & Xavier Vives, 1984. "Price and Quantity Competition in a Differentiated Duopoly," RAND Journal of Economics, The RAND Corporation, vol. 15(4), pages 546-554, Winter.
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