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Trade across Countries and Manufacturing Sectors with Heterogeneous Trade Elasticities

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  • Stefano Bolatto

    ()
    (University of Turin and CERIS-CNR)

Abstract

Multi-sector versions of the international trade model of Eaton and Kortum (2002) usually re- strict trade elasticities to be identical across sectors, with potentially distorting effects on the estimates of the model parameters. This paper allows for heterogeneous sectoral trade elasticities and quanti.es them by estimating an equation for bilateral market shares, with tariffs and standard gravity variables used to model trade barriers. Results show that sectors differ significantly in the size of trade elasticities. The paper proves that this heterogeneity matters at least in three different respects. First, it matters when inferring measures of relative productivity from trade and production data. Secondly, it matters when considering the trade-induced reallocations of production within and between sec- tors. When assessing their relative contribution to the productivity gains that each country obtains from opening to trade, gains turn out to be largely due to the reallocation within sectors, especially for richer countries. Finally, accounting for the heterogeneity in elasticities is crucial when running general equilibrium counterfactual studies, such as that performed in this paper, which assesses the effects on aggregate of sector-specific technology shocks.

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Paper provided by Centro Studi Luca d\'Agliano, University of Milano in its series Development Working Papers with number 360.

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Handle: RePEc:csl:devewp:360

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Keywords: Eaton-Kortum model; technological heterogeneity; gravity equations; trade elasticities; export costs; productivity gains from trade; reallocation between and within sectors.;

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