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Distorted Gravity: The Intensive and Extensive Margins of International Trade

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Chaney, Thomas·2008·American Economic Review

Abstract

By considering a model with identical firms, Krugman (1980) predicts that a higher elasticity of substitution between goods magnifies the impact of trade barriers on trade flows. In this paper, I introduce firm heterogeneity in a simple model of international trade. I prove that the extensive margin and the intensive margin are affected by the elasticity of substitution in exact opposite directions. When the distribution of productivity across firms is Pareto, the predictions of the Krugman model with representative firms are overturned: the impact of trade barriers on trade flows is dampened by the elasticity of substitution, and not magnified. (JEL F12, F13)

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Metadata

Authors
Chaney, T.
Venue
American Economic Review
Published
2008-08-01
Volume
98
Issue
4
Pages
1707-1721
ISSN
0002-8282 (ISSN-L)
OpenAlex
W1967014080
Cited by
2,181
References
3
FWCI
239.94
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Distorted Gravity: The Intensive and Extensive Margins of International Trade. https://app.cochat.ai/papers/10.1257/aer.98.4.1707
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Chaney, T. (2008). Distorted Gravity: The Intensive and Extensive Margins of International Trade. American Economic Review. https://doi.org/10.1257/aer.98.4.1707

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.