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Vertical Differentiation With A Positional Good


  • L. Lambertini
  • R. Orsini


We investigate the role of positional effects in a market for vertically differentiated goods. We consider the two alternative settings, a single-product monopoly and a single-product duopoly. We evaluate the performance of both regimes against social planning. Contrary to conventional wisdom, we establish that it can be socially inefficient to expand the product range.

Suggested Citation

  • L. Lambertini & R. Orsini, 1998. "Vertical Differentiation With A Positional Good," Working Papers 306, Dipartimento Scienze Economiche, Universita' di Bologna.
  • Handle: RePEc:bol:bodewp:306

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    References listed on IDEAS

    1. Crampes, Claude & Hollander, Abraham, 1995. "Duopoly and quality standards," European Economic Review, Elsevier, vol. 39(1), pages 71-82, January.
    2. Frank, Robert H, 1985. "The Demand for Unobservable and Other Nonpositional Goods," American Economic Review, American Economic Association, vol. 75(1), pages 101-116, March.
    3. Champsaur, Paul & Rochet, Jean-Charles, 1989. "Multiproduct Duopolists," Econometrica, Econometric Society, vol. 57(3), pages 533-557, May.
    4. L. Lambertini, 1995. "The Multiproduct Monopolist Under Vertical Differentiation: an Inductive Approach," Working Papers 226, Dipartimento Scienze Economiche, Universita' di Bologna.
    5. Jaskold Gabszewicz, Jean & Shaked, Avner & Sutton, John & Thisse, Jacques-Francois, 1986. "Segmenting the market: The monopolist's optimal product mix," Journal of Economic Theory, Elsevier, vol. 39(2), pages 273-289, August.
    6. Cremer, Helmuth & Thisse, Jacques-Francois, 1994. "Commodity Taxation in a Differentiated Oligopoly," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 35(3), pages 613-633, August.
    7. Mussa, Michael & Rosen, Sherwin, 1978. "Monopoly and product quality," Journal of Economic Theory, Elsevier, vol. 18(2), pages 301-317, August.
    8. Ecchia, Giulio & Lambertini, Luca, 1997. "Minimum Quality Standards and Collusion," Journal of Industrial Economics, Wiley Blackwell, vol. 45(1), pages 101-113, March.
    9. Ireland, Norman J., 1994. "On limiting the market for status signals," Journal of Public Economics, Elsevier, vol. 53(1), pages 91-110, January.
    10. Sheshinski, Eytan, 1976. "Price, Quality and Quantity Regulation in Monopoly Situations," Economica, London School of Economics and Political Science, vol. 43(17), pages 127-137, May.
    11. Itoh, Motoshige, 1983. "Monopoly, product differentiation and economic welfare," Journal of Economic Theory, Elsevier, vol. 31(1), pages 88-104, October.
    12. H. Leibenstein, 1950. "Bandwagon, Snob, and Veblen Effects in the Theory of Consumers' Demand," The Quarterly Journal of Economics, Oxford University Press, vol. 64(2), pages 183-207.
    13. A. Michael Spence, 1975. "Monopoly, Quality, and Regulation," Bell Journal of Economics, The RAND Corporation, vol. 6(2), pages 417-429, Autumn.
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    Cited by:

    1. Luca Lambertini & Raimondello Orsini, 2005. "The Existence Of Equilibrium In A Differentiated Duopoly With Network Externalities," The Japanese Economic Review, Japanese Economic Association, vol. 56(1), pages 55-66.

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