When does Variety increase with Quality?
Casual empiricism suggests higher quality is associated with greater variety. However, recent theoretical and empirical research has either not considered this link, or has been unable to establish unambiguous predictions about the relationship between quality and variety. In this paper we develop a simple model which predicts that for low qualities variety should be positively correlated with quality and we establish conditions under which variety will either increase or decrease with quality at higher quality levels. The monopolist uses variety to increase the profitability of price discrimination across product lines of different qualities, by increasing the likelihood consumers choose high price products among products yielding the same utility. We show that the number of varieties offered by the monopolist is greater than the social optimum. The predictions of the model are supported by an analysis of the market for cars. A wide range of car manufacturers are found to offer a hump-shaped distribution of varieties.
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- Kelvin Lancaster, 1990. "The Economics of Product Variety: A Survey," Marketing Science, INFORMS, vol. 9(3), pages 189-206.
- Champsaur, Paul & Rochet, Jean-Charles, 1989.
Econometric Society, vol. 57(3), pages 533-557, May.
- CHAMPSAUR, Paul & ROCHET, Jean-Charles, "undated". "Multiproduct duopolists," CORE Discussion Papers RP 854, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
- Young, H Peyton, 1993. "The Evolution of Conventions," Econometrica, Econometric Society, vol. 61(1), pages 57-84, January.
- Josef Hofbauer & William H. Sandholm, 2002. "On the Global Convergence of Stochastic Fictitious Play," Econometrica, Econometric Society, vol. 70(6), pages 2265-2294, November.
- Michaela Draganska & Dipak C. Jain, 2006. "Consumer Preferences and Product-Line Pricing Strategies: An Empirical Analysis," Marketing Science, INFORMS, vol. 25(2), pages 164-174, 03-04.
- Mas-Colell, Andreu & Whinston, Michael D. & Green, Jerry R., 1995. "Microeconomic Theory," OUP Catalogue, Oxford University Press, number 9780195102680.
- Fudenberg, D. & Harris, C., 1992. "Evolutionary dynamics with aggregate shocks," Journal of Economic Theory, Elsevier, vol. 57(2), pages 420-441, August.
- Fudenberg, Drew & Harris, Christopher, 1992. "Evolutionary Dynamics with Aggregate Shocks," IDEI Working Papers 13, Institut d'Économie Industrielle (IDEI), Toulouse.
- D. Fudenberg & C. Harris, 2010. "Evolutionary Dynamics with Aggregate Shocks," Levine's Working Paper Archive 496, David K. Levine.
- Kandori, Michihiro & Mailath, George J & Rob, Rafael, 1993. "Learning, Mutation, and Long Run Equilibria in Games," Econometrica, Econometric Society, vol. 61(1), pages 29-56, January.
- Kandori, M. & Mailath, G.J., 1991. "Learning, Mutation, And Long Run Equilibria In Games," Papers 71, Princeton, Woodrow Wilson School - John M. Olin Program.
- M. Kandori & G. Mailath & R. Rob, 1999. "Learning, Mutation and Long Run Equilibria in Games," Levine's Working Paper Archive 500, David K. Levine.
- Basov Suren, 2003. "Incentives for Boundedly Rational Agents," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 3(1), pages 1-16, June.
- Basov, S., 2001. "Incentives for Boundedly Rational Agents," Department of Economics - Working Papers Series 813, The University of Melbourne.
- Drew Fudenberg & David K. Levine, 1998. "The Theory of Learning in Games," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262061945, January.
- Drew Fudenberg & David K. Levine, 1996. "The Theory of Learning in Games," Levine's Working Paper Archive 624, David K. Levine.
- Suren Basov, 2009. "Monopolistic Screening with Boundedly Rational Consumers," The Economic Record, The Economic Society of Australia, vol. 85(s1), pages 29-34, September.
- Michaela Draganska & Dipak C. Jain, 2005. "Product-Line Length as a Competitive Tool," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 14(1), pages 1-28, March.
- Berry, Steven & Levinsohn, James & Pakes, Ariel, 1995. "Automobile Prices in Market Equilibrium," Econometrica, Econometric Society, vol. 63(4), pages 841-890, July.
- Simon P. Anderson & Jacob K. Goeree & Charles A. Holt, 2004. "Noisy Directional Learning and the Logit Equilibrium," Scandinavian Journal of Economics, Wiley Blackwell, vol. 106(3), pages 581-602, October.
- Neven, D. & Thisse, J-F., 1989. "On Quality And Variety Competition," CORE Discussion Papers 1989020, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
- Machina, Mark J, 1985. "Stochastic Choice Functions Generated from Deterministic Preferences over Lotteries," Economic Journal, Royal Economic Society, vol. 95(379), pages 575-594, September.
- Steven Berry & Ariel Pakes, 2007. "The Pure Characteristics Demand Model," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 48(4), pages 1193-1225, November.
- Steven M. Shugan, 1989. "Product Assortment in a Triopoly," Management Science, INFORMS, vol. 35(3), pages 304-320, March. Full references (including those not matched with items on IDEAS)
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