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date: 18 February 2025

Gravity Models and Empirical Tradelocked

Gravity Models and Empirical Tradelocked

  • Scott BaierScott BaierCollege of Business, Clemson University
  • , and Samuel StandaertSamuel StandaertInstitute on Comparative Regional Integration Studies, United Nations University

Summary

The gravity model of international trade states that the volume of trade between two countries is proportional to their economic mass and a measure of their relative trade frictions. Perhaps because of its intuitive appeal, the gravity model has been the workhorse model of international trade for more than 50 years. While the initial empirical work using the gravity model lacked sound theoretical underpinnings, the theoretical developments have highlighted how a gravity-like specification can be derived from many models with varying assumptions about preferences, technology, and market structure. Along the strengthening of the theoretical roots of the gravity model, the way in which it is estimated has also evolved significantly since the start of the new millennium. Depending on the exact characteristics of regression, different estimation methods should be used to estimate the gravity model.

Subjects

  • International Economics

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