The Welfare Effects of Third-Degree Price Discrimination in a Differentiated Oligopoly
AbstractThis paper studies the relationship between horizontal product differentiation and the welfare effects of third-degree price discrimination in oligopoly. By deriving linear demand from a representative consumer's utility and focusing on the symmetric equilibrium of a pricing game, we characterize the conditions relating to such demand properties as substitutability and complementarity for price discrimination to improve social welfare. In particular, we show that price discrimination can improve social welfare if firms' brands are substitutes in a market where the discriminatory price is higher and complements in one where it is lower, but welfare never improves in the reverse situation. We verify, however, that consumer surplus is never improved by price discrimination; welfare improvement by price discrimination is solely due to an increase in the firms' profits. This means that there is no chance that firms suffer from a "prisoners' dilemma," that is, firms are better off by switching from uniform pricing to price discrimination.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
Bibliographic InfoPaper provided by Institute of Social and Economic Research, Osaka University in its series ISER Discussion Paper with number 0800.
Date of creation: Jan 2011
Date of revision:
Other versions of this item:
- Takanori Adachi & Noriaki Matsushima, 2011. "The Welfare Effects of Third-Degree PriceDiscrimination in a Differentiated Oligopoly," KIER Working Papers 800, Kyoto University, Institute of Economic Research.
- D43 - Microeconomics - - Market Structure and Pricing - - - Oligopoly and Other Forms of Market Imperfection
- L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms
- L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
This paper has been announced in the following NEP Reports:
- NEP-ALL-2011-02-19 (All new papers)
- NEP-BEC-2011-02-19 (Business Economics)
- NEP-CIS-2011-02-19 (Confederation of Independent States)
- NEP-COM-2011-02-19 (Industrial Competition)
- NEP-IND-2011-02-19 (Industrial Organization)
- NEP-MKT-2011-02-19 (Marketing)
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Neven, D. & Phlips, L., 1984.
"Discriminating oligopolists and common markets,"
CORE Discussion Papers
1984022, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
- Schwartz, Marius, 1990. "Third-Degree Price Discrimination and Output: Generalizing a Welfare Result," American Economic Review, American Economic Association, vol. 80(5), pages 1259-62, December.
- I�aki Aguirre & Simon Cowan & John Vickers, 2010.
"Monopoly Price Discrimination and Demand Curvature,"
American Economic Review,
American Economic Association, vol. 100(4), pages 1601-15, September.
- Cowan, Simon & Vickers, John & Aguirre Pérez, Iñaki, 2009. "Monopoly Price Discrimination and Demand Curvature," IKERLANAK 2009-39, Universidad del País Vasco - Departamento de Fundamentos del Análisis Económico I.
- Jerry A. Hausman & Jeffrey K. MacKie-Mason, 1988.
"Price Discrimination and Patent Policy,"
RAND Journal of Economics,
The RAND Corporation, vol. 19(2), pages 253-265, Summer.
- Kenneth S. Corts, 1998. "Third-Degree Price Discrimination in Oligopoly: All-Out Competition and Strategic Commitment," RAND Journal of Economics, The RAND Corporation, vol. 29(2), pages 306-323, Summer.
- Layson, Stephen K, 1998. "Third-Degree Price Discrimination with Interdependent Demands," Journal of Industrial Economics, Wiley Blackwell, vol. 46(4), pages 511-24, December.
- Asplund, Björn Marcus & Eriksson, Rickard & Strand, Niklas, 2002.
"Price Discrimination in Oligopoly: Evidence from Swedish Newspapers,"
CEPR Discussion Papers
3269, C.E.P.R. Discussion Papers.
- Asplund, Marcus & Eriksson, Rickard & Strand, Niklas, 2001. "Price Discrimination in Oligopoly: Evidence from Swedish Newspapers," Working Paper Series in Economics and Finance 468, Stockholm School of Economics, revised 01 Jan 2007.
- Simon Cowan, 2007.
"The welfare effects of third-degree price discrimination with non-linear demand functions,"
Economics Series Working Papers
364, University of Oxford, Department of Economics.
- Simon Cowan, 2007. "The welfare effects of third-degree price discrimination with nonlinear demand functions," RAND Journal of Economics, RAND Corporation, vol. 38(2), pages 419-428, 06.
- Stole, Lars A., 2007. "Price Discrimination and Competition," Handbook of Industrial Organization, Elsevier.
- Adachi, Takanori, 2002. "A Note on 'Third-Degree Price Discrimination with Interdependent Demands.'," Journal of Industrial Economics, Wiley Blackwell, vol. 50(2), pages 235, June.
- Holmes, Thomas J, 1989. "The Effects of Third-Degree Price Discrimination in Oligopoly," American Economic Review, American Economic Association, vol. 79(1), pages 244-50, March.
- Belleflamme,Paul & Peitz,Martin, 2010. "Industrial Organization," Cambridge Books, Cambridge University Press, number 9780521681599, December.
- Layson, Stephen, 1988. "Third-Degree Price Discrimination, Welfare and Profits: A Geometrical Analysis," American Economic Review, American Economic Association, vol. 78(5), pages 1131-32, December.
- Ikeda, Takeshi & Toshimitsu, Tsuyoshi, 2010. "Third-degree price discrimination, quality choice, and welfare," Economics Letters, Elsevier, vol. 106(1), pages 54-56, January.
- Liu Qihong & Serfes Konstantinos, 2011. "Third-Degree Price Discrimination," Journal of Industrial Organization Education, De Gruyter, vol. 5(1), pages 1-23, March.
- Krishnendu Ghosh Dastidar, 2006. "On Third-Degree Price Discrimination In Oligopoly," Manchester School, University of Manchester, vol. 74(2), pages 231-249, 03.
- Xavier Vives, 2001. "Oligopoly Pricing: Old Ideas and New Tools," MIT Press Books, The MIT Press, edition 1, volume 1, number 026272040x, January.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Fumiko Matsumoto).
If references are entirely missing, you can add them using this form.