Market Experimentation in a Dynamic Differentiated-Goods Duopoly
We study the evolution of prices in a symmetric duopoly where firms are uncertain about the degree of product differentiation. Customers sometimes perceive the products as close substitutes, sometimes as highly differentiated. Firms learn about their competitive environment from the quantities sold and a background signal. As the information of the market outcomes increases with the price differential, there is scope for active learning. In a setting with linear demand curves, we derive firms' pricing strategies as payoff-symmetric mixed or correlated Markov perfect equilibria of a stochastic differential game where the common posterior belief is the natural state variable. When information has low value, firms charge the same price as would be set by myopic players, and there is no price dispersion. When firms value information more highly, on the other hand, they actively learn by creating price dispersion. This market experimentation is transient, and most likely to be observed when the firms' environment changes sufficiently often, but not too frequently.
|Date of creation:||Jul 1999|
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- Keller, Godfrey & Rady, Sven, 1999.
"Optimal Experimentation in a Changing Environment,"
Review of Economic Studies,
Wiley Blackwell, vol. 66(3), pages 475-507, July.
- Godfrey Keller & Sven Rady, 1997. "Optimal Experimentation in a Changing Environment," STICERD - Theoretical Economics Paper Series /1997/333, Suntory and Toyota International Centres for Economics and Related Disciplines, LSE.
- Godfrey Keller & Sven Rady, 1998. "Optimal Experimentation in a Changing Environment," Game Theory and Information 9801001, EconWPA.
- Mirman,Leonard & Samuelson,Larry & Urbano,Amparo, .
"Duopoly signal jamming,"
Discussion Paper Serie B
199, University of Bonn, Germany.
- Harrington Jr. , Joseph E., 1995. "Experimentation and Learning in a Differentiated-Products Duopoly," Journal of Economic Theory, Elsevier, vol. 66(1), pages 275-288, June.
- Peter Diamond, 1985.
"Consumer Differences and Prices in a Search Model,"
404, Massachusetts Institute of Technology (MIT), Department of Economics.
- Mirman, L.J. & Samuelson, L. & Schlee, E.E., 1991.
"Strategic information manipulation in duopolies,"
1991-37, Tilburg University, Center for Economic Research.
- Mirman, L.J. & Samuelson, L. & Schlee, E.E., 1992. "Strategic Information Manipulation in Duopolies," Working papers 9210, Wisconsin Madison - Social Systems.
- Mirman, L.J. & Samuelson, L. & Schlee, E.E., 1991. "Strategic Information Manupulation in Duopolies," Papers 9137, Tilburg - Center for Economic Research.
- Dirk Bergemann & Juuso Valimaki, 1996.
"Market Diffusion with Two-Sided Learning,"
Cowles Foundation Discussion Papers
1138, Cowles Foundation for Research in Economics, Yale University.
- Felli, Leonardo & Harris, Christopher, 1996. "Learning, Wage Dynamics, and Firm-Specific Human Capital," Journal of Political Economy, University of Chicago Press, vol. 104(4), pages 838-68, August.
- Dirk Bergemann & Juuso Valimaki, 1996. "Market Experimentation and Pricing," Cowles Foundation Discussion Papers 1122, Cowles Foundation for Research in Economics, Yale University.
- Kenneth Burdett and Melvyn G. Coles, .
"Steady State Price Distributions in a Noisy Search Equilibrium,"
Economics Discussion Papers
450, University of Essex, Department of Economics.
- Burdett, Kenneth & Coles, Melvyn G., 1997. "Steady State Price Distributions in a Noisy Search Equilibrium," Journal of Economic Theory, Elsevier, vol. 72(1), pages 1-32, January.
- Aghion, P. & Espinoza, M.P. & Jullien, B., 1990.
"Dynamic Duopoly With Learning Through Market Experimentation,"
DELTA Working Papers
90-13, DELTA (Ecole normale supérieure).
- Aghion, Philippe & Espinosa, Maria Paz & Jullien, Bruno, 1993. "Dynamic Duopoly with Learning through Market Experimentation," Economic Theory, Springer, vol. 3(3), pages 517-39, July.
- Jullien Bruno & Aghion Philippe & Paz Espinoza M, 1990. "Dynamic duopoly with learning through market experimentation," CEPREMAP Working Papers (Couverture Orange) 9012, CEPREMAP.
- Rob, Rafael, 1991. "Learning and Capacity Expansion under Demand Uncertainty," Review of Economic Studies, Wiley Blackwell, vol. 58(4), pages 655-75, July.
- Rothschild, Michael, 1974. "A two-armed bandit theory of market pricing," Journal of Economic Theory, Elsevier, vol. 9(2), pages 185-202, October.
- Jennifer F. Reinganum, 1978.
"A Simple Model of Equilibrium Price Dispersion,"
335, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Arthur Fishman & Rafael Rob, .
""Experimentation and Competition'',"
CARESS Working Papres
97-12, University of Pennsylvania Center for Analytic Research and Economics in the Social Sciences.
- Patrick Bolton & Christopher Harris, 1999. "Strategic Experimentation," Econometrica, Econometric Society, vol. 67(2), pages 349-374, March.
- McLennan, Andrew, 1984. "Price dispersion and incomplete learning in the long run," Journal of Economic Dynamics and Control, Elsevier, vol. 7(3), pages 331-347, September.
- Michael H. Riordan, 1985. "Imperfect Information and Dynamic Conjectural Variations," RAND Journal of Economics, The RAND Corporation, vol. 16(1), pages 41-50, Spring.
- Caplin, Andrew & Leahy, John V, 1993. "Sectoral Shocks, Learning, and Aggregate Fluctuations," Review of Economic Studies, Wiley Blackwell, vol. 60(4), pages 777-94, October.
- Steven Salop & Joseph Stiglitz, 1977.
"Bargains and ripoffs: a model of monopolistically competitive price dispersion,"
Special Studies Papers
94, Board of Governors of the Federal Reserve System (U.S.).
- Salop, Steven & Stiglitz, Joseph E, 1977. "Bargains and Ripoffs: A Model of Monopolistically Competitive Price Dispersion," Review of Economic Studies, Wiley Blackwell, vol. 44(3), pages 493-510, October.
- Burdett, Kenneth & Judd, Kenneth L, 1983. "Equilibrium Price Dispersion," Econometrica, Econometric Society, vol. 51(4), pages 955-69, July.
- Christopher Harris, 1993.
"Generalized Solutions of Stochastic Differential Games in One Dimension,"
0044, Boston University - Industry Studies Programme.
- Harris, C., 1993. "Generalized Solutions of Stochastic Differential Games in One Dimension," Papers 44, Boston University - Industry Studies Programme.
- Slade, Margaret E, 1989. "Price Wars in Price-Setting Supergames," Economica, London School of Economics and Political Science, vol. 56(223), pages 295-310, August.
- Gale, D. & Chamley, C., 1992.
"Information Revelation and Strategic Delay in a Model of Investment,"
10, Boston University - Department of Economics.
- Chamley, Christophe & Gale, Douglas, 1994. "Information Revelation and Strategic Delay in a Model of Investment," Econometrica, Econometric Society, vol. 62(5), pages 1065-85, September.
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