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Trade and Variety in a Model of Endogenous Product Differentiation

Author

Listed:
  • Oliver Lorz

    (RWTH Aachen University)

  • Matthias Wrede

    (Philipps-University Marburg)

Abstract
This paper sets up a model of endogenous product differentiation to analyze the variety effects of international trade. In our model multi-product firms decide not only about the number of varieties they supply but also about the degree of horizontal differentiation between these varieties. Firms can raise the degree of differentiation by investing variety-specific fixed costs. In this setting, we analyze how trade integration, i.e. an increase in market size, influences the number of firms in the market, the number of product varieties supplied by each firm, and the degree of differentiation.

Suggested Citation

  • Oliver Lorz & Matthias Wrede, 2009. "Trade and Variety in a Model of Endogenous Product Differentiation," MAGKS Papers on Economics 200902, Philipps-Universität Marburg, Faculty of Business Administration and Economics, Department of Economics (Volkswirtschaftliche Abteilung).
    • Handle: RePEc:mar:magkse:200902
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    File URL: https://www.uni-marburg.de/en/fb02/research-groups/economics/macroeconomics/research/magks-joint-discussion-papers-in-economics/papers/2009-papers/02-2009_lorz.pdf
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    References listed on IDEAS

    as
    1. Nocke, Volker & Yeaple, Stephen, 2008. "Globalization and the Size Distribution of Multiproduct Firms," CEPR Discussion Papers 6948, C.E.P.R. Discussion Papers.
    2. Ulrich Doraszelski & Michaela Draganska, 2006. "Market Segmentation Strategies Of Multiproduct Firms," Journal of Industrial Economics, Wiley Blackwell, vol. 54(1), pages 125-149, March.
    3. Marc J. Melitz & Giancarlo I. P. Ottaviano, 2021. "Market Size, Trade, and Productivity," World Scientific Book Chapters, in: Firms and Workers in a Globalized World Larger Markets, Tougher Competition, chapter 4, pages 87-108, World Scientific Publishing Co. Pte. Ltd..
    4. Carsten Eckel, 2006. "Trade and Diversity: Is There a Case for ‘Cultural Protectionism?’," German Economic Review, Verein für Socialpolitik, vol. 7(4), pages 403-418, November.
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    8. Allanson, Paul & Montagna, Catia, 2005. "Multiproduct firms and market structure: An explorative application to the product life cycle," International Journal of Industrial Organization, Elsevier, vol. 23(7-8), pages 587-597, September.
    9. John Baldwin & Wulong Gu, 2009. "The Impact of Trade on Plant Scale, Production-Run Length and Diversification," NBER Chapters, in: Producer Dynamics: New Evidence from Micro Data, pages 557-592, National Bureau of Economic Research, Inc.
    10. Andrew B. Bernard & Stephen J. Redding & Peter K. Schott, 2011. "Multiproduct Firms and Trade Liberalization," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 126(3), pages 1271-1318.
    11. Carsten Eckel, 2009. "Endogenous Sunk Costs, Flexible Manufacturing and the Productivity Effects of International Trade," Scandinavian Journal of Economics, Wiley Blackwell, vol. 111(2), pages 369-386, June.
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    Cited by:

    1. Shon M. Ferguson, 2015. "Endogenous Product Differentiation, Market Size and Prices," Review of International Economics, Wiley Blackwell, vol. 23(1), pages 45-61, February.
    2. Luciano Fanti & Luca Gori, 2024. "A product innovation game with managerial delegation," Managerial and Decision Economics, John Wiley & Sons, Ltd., vol. 45(2), pages 770-783, March.
    3. Irlacher, Michael, 2014. "Multi-Product Firms, Endogenous Sunk Costs, and Gains from Trade through Intra-Firm Adjustments," Discussion Papers in Economics 21023, University of Munich, Department of Economics.

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    More about this item

    Keywords

    Product differentiation; multi-product firms; international trade.;
    All these keywords.

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • F12 - International Economics - - Trade - - - Models of Trade with Imperfect Competition and Scale Economies; Fragmentation
    • L25 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Firm Performance

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