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Love of Variety in Trade Models with Product Differentiation

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  • Kazuhiko Oyamada

Abstract

This paper explores the key role of importer's love of variety in applied general equilibrium models featuring product differentiation. The paper compares the Armington-, Krugman-, and Melitz-type trade specifications. Experimental simulations with the model reveal that as love of variety weakens, based on the empirical evidence revealed by Ardelean (2006), the models with homogeneous firms may generate larger welfare gains than the Melitz-type heterogeneous firm model. This stands in marked contrast to the findings of Melitz and Redding (2013), based on the assumption of maximum valuation on increasing variety.

Suggested Citation

  • Kazuhiko Oyamada, 2020. "Love of Variety in Trade Models with Product Differentiation," Journal of Global Economic Analysis, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University, vol. 5(2), pages 1-62, December.
    • Handle: RePEc:gta:jnlgea:v:5:y:2020:i:2:p:1-62
    DOI: http://dx.doi.org/10.21642/JGEA.050201AF
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    Cited by:

    1. Oyamada,Kazuhiko, 2023. "Behavioral characteristics of mrio-based global age models with variable elasticity of substitution between varieties," IDE Discussion Papers 881, Institute of Developing Economies, Japan External Trade Organization(JETRO).
    2. Gouel, Christophe & Jean, Sébastien, 2023. "Love of variety and gains from trade," European Economic Review, Elsevier, vol. 158(C).

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