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Dynamic Selection and the New Gains from Trade with Heterogeneous Firms

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  • Thomas Sampson

    (LSE)

Abstract

This paper develops an open economy growth model in which firm heterogeneity increases the gains from trade. Technology spillovers from incumbent firms to entrants cause the productivity threshold for firm survival to grow over time as competition becomes tougher. By raising the profits of exporters, trade increases the entry rate and generates a dynamic selection effect that leads to higher growth. The paper shows that the gains from trade can be decomposed into: static gains that equal the total gains from trade in an economy without technology spillovers, and; dynamic gains that are strictly positive. Since trade raises growth through selection, not scale effects, the positive growth effect of trade vanishes when firms are homogeneous. Thus, firm heterogeneity creates a new source of dynamic gains from trade. Calibrating the model to the U.S. economy implies that dynamic selection approximately triples the gains from trade.

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  • Thomas Sampson, 2013. "Dynamic Selection and the New Gains from Trade with Heterogeneous Firms," 2013 Meeting Papers 125, Society for Economic Dynamics.
  • Handle: RePEc:red:sed013:125
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    References listed on IDEAS

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    1. Krugman, Paul, 1980. "Scale Economies, Product Differentiation, and the Pattern of Trade," American Economic Review, American Economic Association, vol. 70(5), pages 950-959, December.
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    5. Costas Arkolakis & Arnaud Costinot & Andres Rodriguez-Clare, 2012. "New Trade Models, Same Old Gains?," American Economic Review, American Economic Association, vol. 102(1), pages 94-130, February.
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    Cited by:

    1. Ottaviano, Gianmarco & Pessoa, João Paulo & Sampson, Thomas & Van Reenen, John, 2014. "The costs and benefits of leaving the EU," CFS Working Paper Series 472, Center for Financial Studies (CFS).
    2. Kamil Kotlinski, 2018. "The economic consequences of leaving European Union by Great Britain," Ekonomia i Prawo, Uniwersytet Mikolaja Kopernika, vol. 17(2), pages 157-167, June.

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    More about this item

    JEL classification:

    • F12 - International Economics - - Trade - - - Models of Trade with Imperfect Competition and Scale Economies; Fragmentation
    • F43 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Economic Growth of Open Economies
    • O41 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - One, Two, and Multisector Growth Models

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