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Taste for variety and endogenous fluctuations in a monopolistic competition model

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  • Thomas Seegmuller

    (CES - Centre d'économie de la Sorbonne - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique)

Abstract

In past years, imperfect competition has been introduced in several dynamic models to show how mark-up variability, increasing returns (decreasing marginal cost) and monopoly profits affect the occurence of endogenous fluctuations. In this paper, we focus on another possible feature of imperfectly competitive economies : consumers' taste for variety due to endogenous product diversity. introducing monopolistic competition (Dixit and Stiglitz (1977), Benassy (1996)) in an overlapping generations model where consumers have taste for variety, we show that local indeterminacy can occur under the three following conditions : a high substitution between capital and labor, increasing returns arbitrarily small and a not too elastic labor supply. The key mechanism for this result is based on the fact that, due to taste for variety, the aggregate price decreases with the pro-cyclical product diversity which has a direct influence on the real wage and the real interest rate.

Suggested Citation

  • Thomas Seegmuller, 2007. "Taste for variety and endogenous fluctuations in a monopolistic competition model," Post-Print halshs-00143424, HAL.
    • Handle: RePEc:hal:journl:halshs-00143424
    Note: View the original document on HAL open archive server: https://shs.hal.science/halshs-00143424
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    Cited by:

    1. Pavlov, Oscar & Weder, Mark, 2012. "Variety matters," Journal of Economic Dynamics and Control, Elsevier, vol. 36(4), pages 629-641.
    2. Thomas Seegmuller & Leonor Modesto & Teresa Lloyd-Braga, 2008. "Market Imperfections and Endogenous Fluctuations," 2008 Meeting Papers 739, Society for Economic Dynamics.
    3. Lloyd-Braga, Teresa & Modesto, Leonor & Seegmuller, Thomas, 2014. "Market distortions and local indeterminacy: A general approach," Journal of Economic Theory, Elsevier, vol. 151(C), pages 216-247.
    4. Gouel, Christophe & Jean, Sébastien, 2023. "Love of variety and gains from trade," European Economic Review, Elsevier, vol. 158(C).
    5. Vera Ivanova & Philip Ushchev, 2015. "When Ricardo Meets Chamberlin: A Simple Dynamic Model Of Monopolistic Competition," HSE Working papers WP BRP 99/EC/2015, National Research University Higher School of Economics.
    6. Le Riche, Antoine & Lloyd-Braga, Teresa & Modesto, Leonor, 2022. "Intra-industry trade, involuntary unemployment and macroeconomic stability," Journal of Mathematical Economics, Elsevier, vol. 99(C).

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    JEL classification:

    • C62 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Existence and Stability Conditions of Equilibrium
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • E32 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Business Fluctuations; Cycles

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