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Monopolistic Competition, International Trade and Firm Heterogeneity - a Life Cycle Perspective

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    This paper presents a dynamic international trade model based on monopolistic competition, where observed intra-industry differences at a given point in time reflect different stages of the firm’s life cycle. New product varieties of still higher quality enter the market every period rendering old varieties obsolescent in a process of creative destruction. For given technology (variety) production costs decrease after an infant period due to learning. It is shown that several patterns of exports may arise depending primarily on the size of fixed trade costs. At a given point in time firms therefore differ due to different age, although all firms are symmetric in a life cycle perspective. The paper thus offers an alternative view on firm heterogeneity compared with other recent papers, where productivity differences appear as an outcome of a stochastic process.

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    File URL: http://www.hha.dk/nat/wper/08-7_jdhajum.pdf
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    Paper provided by University of Aarhus, Aarhus School of Business, Department of Economics in its series Working Papers with number 08-7.

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    Length: 39 pages
    Date of creation: 01 May 2008
    Date of revision:
    Handle: RePEc:hhs:aareco:2008_007
    Contact details of provider: Postal: The Aarhus School of Business, Prismet, Silkeborgvej 2, DK 8000 Aarhus C, Denmark
    Phone: +45 89 486396
    Fax: +45 8615 5175
    Web page: http://www.asb.dk/departments/nat.aspx

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    1. Aghion, P. & Howitt, P., 1990. "A Model Of Growth Through Creative Destruction," DELTA Working Papers 90-12, DELTA (Ecole normale supérieure).
    2. Harris, Christopher & Howitt, Peter & Vickers, John & Aghion, Philippe, 2001. "Competition, Imitation and Growth with Step-by-Step Innovation," Scholarly Articles 12375013, Harvard University Department of Economics.
    3. Catia Montagna, 1998. "Efficiency Gaps, Love of Variety and International Trade," Dundee Discussion Papers in Economics 090, Economic Studies, University of Dundee.
    4. Yeaple, Stephen & Helpman, Elhanan & Melitz, Marc, 2004. "Export versus FDI with Heterogeneous Firms," Scholarly Articles 3229098, Harvard University Department of Economics.
    5. Krugman, Paul, 1980. "Scale Economies, Product Differentiation, and the Pattern of Trade," American Economic Review, American Economic Association, vol. 70(5), pages 950-59, December.
    6. Hallak, Juan Carlos, 2006. "Product quality and the direction of trade," Journal of International Economics, Elsevier, vol. 68(1), pages 238-265, January.
    7. C. Lanier Benkard, 2000. "Learning and Forgetting: The Dynamics of Aircraft Production," American Economic Review, American Economic Association, vol. 90(4), pages 1034-1054, September.
    8. Krugman, Paul R., 1979. "Increasing returns, monopolistic competition, and international trade," Journal of International Economics, Elsevier, vol. 9(4), pages 469-479, November.
    9. Aghion, Philippe, et al, 2001. "Competition, Imitation and Growth with Step-by-Step Innovation," Review of Economic Studies, Wiley Blackwell, vol. 68(3), pages 467-92, July.
    10. Aghion, Philippe & Howitt, Peter, 1992. "A Model of Growth Through Creative Destruction," Scholarly Articles 12490578, Harvard University Department of Economics.
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