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A Unified Explanation of Trade Liberalization Effects Across Models of Imperfect Competition

Author

Listed:
  • Alfaro, Martin

    (University of Alberta, Department of Economics)

  • Lander, David

    (Peking University)

Abstract

This paper reconciles for the first time the wide range of outcomes arising in studies of trade liberalizations. We define an imperfect-competition model encompassing the major variants of monopolistic competition (Krugman, Melitz, and Chaney) and Cournot (with free and restricted entry). This model reveals that seemingly disparate outcomes are not due to market structure, as usually conjectured, but differences in marginal entrants' features. Thus, once we reconcile these differences, the same outcomes emerge across all models. By identifying assumptions on marginal entrants that generate pro-competitive, anti-competitive, or null effects, we also explain why puzzling outcomes arise in some standard frameworks.

Suggested Citation

  • Alfaro, Martin & Lander, David, 2019. "A Unified Explanation of Trade Liberalization Effects Across Models of Imperfect Competition," Working Papers 2019-16, University of Alberta, Department of Economics.
  • Handle: RePEc:ris:albaec:2019_016
    as

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    File URL: https://sites.ualberta.ca/~econwps/2019/wp2019-16.pdf
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    References listed on IDEAS

    as
    1. 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..
    2. Marc J. Melitz & Gianmarco I. P. Ottaviano, 2008. "Market Size, Trade, and Productivity (DOI:10.111/j.1467-937x.2007.00463.x)," Review of Economic Studies, Oxford University Press, vol. 75(3), pages 985-985.
    3. Venables, Anthony J., 1985. "Trade and trade policy with imperfect competition: The case of identical products and free entry," Journal of International Economics, Elsevier, vol. 19(1-2), pages 1-19, August.
    Full references (including those not matched with items on IDEAS)

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    More about this item

    Keywords

    imperfect competition; unilateral liberalization; import competition; export opportunities;
    All these keywords.

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • F10 - International Economics - - Trade - - - General
    • F12 - International Economics - - Trade - - - Models of Trade with Imperfect Competition and Scale Economies; Fragmentation
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets

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