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Demand shifts and imperfect competition

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  • Simon GB Cowan
  • Simon Cowan

Abstract

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.

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  • Simon GB Cowan & Simon Cowan, 2004. "Demand shifts and imperfect competition," Economics Series Working Papers 188, University of Oxford, Department of Economics.
    • Handle: RePEc:oxf:wpaper:188
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    10. Bish, Ebru K. & Suwandechochai, Rawee, 2010. "Optimal capacity for substitutable products under operational postponement," European Journal of Operational Research, Elsevier, vol. 207(2), pages 775-783, December.
    11. Leung,Justin H. & Hee Kwon (Samuel) Seo, 2022. "How Do Government Transfer Payments Affect Retail Prices and Welfare ? Evidence from SNAP," Policy Research Working Paper Series 10075, The World Bank.
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    14. Özelkan, Ertunga C. & Lim, Churlzu & Adnan, Ziaul Haq, 2018. "Conditions of reverse bullwhip effect in pricing under joint decision of replenishment and pricing," International Journal of Production Economics, Elsevier, vol. 200(C), pages 207-223.
    15. Alexander Haupt, 2023. "Environmental Policy and Renewable Energy in an Imperfectly Competitive Market," CESifo Working Paper Series 10524, CESifo.
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    17. Özelkan, Ertunga C. & ÇakanyIldIrIm, Metin, 2009. "Reverse bullwhip effect in pricing," European Journal of Operational Research, Elsevier, vol. 192(1), pages 302-312, January.
    18. Wang, Yao-Yu & Wang, Jian-Cai & Shou, Biying, 2013. "Pricing and effort investment for a newsvendor-type product," European Journal of Operational Research, Elsevier, vol. 229(2), pages 422-432.
    19. Ertunga Özelkan & Churlzu Lim, 2008. "Conditions of reverse bullwhip effect in pricing for price-sensitive demand functions," Annals of Operations Research, Springer, vol. 164(1), pages 211-227, November.
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    21. Menezes, Flavio M. & Quiggin, John, 2022. "Market power amplifies the price effects of demand shocks," Economics Letters, Elsevier, vol. 221(C).
    22. Han, Sungill & Chung, Chanjin & Suh, Daeseok, 2011. "Generic Advertising in Concentrated and Differentiated Agricultural Markets," 2011 Annual Meeting, July 24-26, 2011, Pittsburgh, Pennsylvania 103739, Agricultural and Applied Economics Association.
    23. Yuyue Song & Saibal Ray & Tamer Boyaci, 2009. "Technical Note---Optimal Dynamic Joint Inventory-Pricing Control for Multiplicative Demand with Fixed Order Costs and Lost Sales," Operations Research, INFORMS, vol. 57(1), pages 245-250, February.

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    More about this item

    Keywords

    Comparative Statics; Monopoly; Oligopoly; Log-concavity.;
    All these keywords.

    JEL classification:

    • D42 - Microeconomics - - Market Structure, Pricing, and Design - - - Monopoly
    • L12 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Monopoly; Monopolization Strategies
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets

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