Demand shifts and imperfect competition
The effects of demand shifts on output, price and profits in imperfectly competitive industries with no entry or exit are derived. Four types of demand shift are modelled: additive and multiplicative shifts of the demand and inverse demand functions. Necessary and sufficient conditions for output, price and profits to increase with an outward demand shift are derived for each case. Either output or the price, but not both, may fall with a positive demand shift. Profits may also fall for a Cournot oligopoly. Log-concavity of the direct demand function is sufficient for the standard results to go through.
|Date of creation:||01 Mar 2004|
|Date of revision:|
|Contact details of provider:|| Postal: Manor Rd. Building, Oxford, OX1 3UQ|
Web page: http://www.economics.ox.ac.uk/
More information through EDIRC
References listed on IDEAS
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.:
- Edward J Green & Robert H Porter, 1997.
"Noncooperative Collusion Under Imperfect Price Information,"
Levine's Working Paper Archive
1147, David K. Levine.
- Green, Edward J & Porter, Robert H, 1984. "Noncooperative Collusion under Imperfect Price Information," Econometrica, Econometric Society, vol. 52(1), pages 87-100, January.
- Green, Edward J. & Porter, Robert H., 1982. "Noncooperative Collusion Under Imperfect Price Information," Working Papers 367, California Institute of Technology, Division of the Humanities and Social Sciences.
- Rabah Amir & Val E. Lambson, 1998.
"On the Effects of Entry in Cournot Markets,"
CIE Discussion Papers
1998-06, University of Copenhagen. Department of Economics. Centre for Industrial Economics.
- Rabah Amir, 2000. "On the Effects of Entry in Cournot Markets," Econometric Society World Congress 2000 Contributed Papers 1475, Econometric Society.
- AMIR, Rabah & LAMBSON, Val, 1999. "On the effects of entry in Cournot markets," CORE Discussion Papers 1999059, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
- Bulow, Jeremy & Geanakoplos, John & Klemperer, Paul, 1985. "Holding Idle Capacity to Deter Entry [The Role of Investment in Entry Deterrence]," Economic Journal, Royal Economic Society, vol. 95(377), pages 178-82, March.
- Xavier Vives, 2001. "Oligopoly Pricing: Old Ideas and New Tools," MIT Press Books, The MIT Press, edition 1, volume 1, number 026272040x, March.
- Tim Baldenius & Stefan Reichelstein, 2000. "Comparative statics of monopoly pricing," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 16(2), pages 465-469.
- Rotemberg, Julio J & Saloner, Garth, 1986. "A Supergame-Theoretic Model of Price Wars during Booms," American Economic Review, American Economic Association, vol. 76(3), pages 390-407, June.
- Hamilton, Stephen F., 1999. "Demand shifts and market structure in free-entry oligopoly equilibria," International Journal of Industrial Organization, Elsevier, vol. 17(2), pages 259-275, February.
- Schlee, Edward E., 1993. "A curvature condition ensuring uniqueness of Cournot equilibrium, with applications to comparative statics," Economics Letters, Elsevier, vol. 41(1), pages 29-33.
- Friedman, David, 1987. "Cold Houses in Warm Climates and Vice Versa: A Paradox of Rational Heating," Journal of Political Economy, University of Chicago Press, vol. 95(5), pages 1089-97, October.
- Justin P. Johnson & David P. Myatt, 2006.
"On the Simple Economics of Advertising, Marketing, and Product Design,"
American Economic Review,
American Economic Association, vol. 96(3), pages 756-784, June.
- David P. Myatt & Justin P. Johnson, 2004. "On the Simple Economics of Advertising, Marketing, and Product Design," Economics Series Working Papers 185, University of Oxford, Department of Economics.
- Quirmbach, Herman C, 1988. "Comparative Statics for Oligopoly: Demand Shift Effects," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 29(3), pages 451-59, August.
- Glenn Ellison, 1994. "Theories of Cartel Stability and the Joint Executive Committee," RAND Journal of Economics, The RAND Corporation, vol. 25(1), pages 37-57, Spring.
- Seade, J, 1985. "Profitable Cost Increases and the Shifting of Taxation : Equilibrium Response of Markets in Oligopoly," The Warwick Economics Research Paper Series (TWERPS) 260, University of Warwick, Department of Economics.
- Dasgupta, Partha & Stiglitz, Joseph, 1980. "Industrial Structure and the Nature of Innovative Activity," Economic Journal, Royal Economic Society, vol. 90(358), pages 266-93, June.
- Seade, Jesus K, 1980. "On the Effects of Entry," Econometrica, Econometric Society, vol. 48(2), pages 479-89, March.
- F. H. Hahn, 1962. "The Stability of the Cournot Oligopoly Solution," Review of Economic Studies, Oxford University Press, vol. 29(4), pages 329-331.
- Cowan, Simon, 2004. "Optimal risk allocation for regulated monopolies and consumers," Journal of Public Economics, Elsevier, vol. 88(1-2), pages 285-303, January.
- Fluet, Claude & Phaneuf, Louis, 1997. "Price adjustment costs and the effect of endogenous technique on price stickiness," European Economic Review, Elsevier, vol. 41(2), pages 245-257, February.
- Seade, Jesus, 1980. "The stability of cournot revisited," Journal of Economic Theory, Elsevier, vol. 23(1), pages 15-27, August.
When requesting a correction, please mention this item's handle: RePEc:oxf:wpaper:188. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Monica Birds)
If references are entirely missing, you can add them using this form.