Gravity, log of gravity and the "distance puzzle"
Estimations of gravity equations specified in logarithm generally conclude that the distance elasticity of trade has increased over time despite globalization. In contrast, building on Santos Silva and Tenreyro (2006), this elasticity is estimated to have been stable around 0.65-0.70 since the 1960s. Moreover, although FTAs tend to cover neighboring countries, this main result is robust to different treatments of FTA effects. The main estimated change refers to the impact of colonial linkages, which has been at least halved. This paper brings also several important methodological contributions to the analysis of gravity equations, including broad support for the Poisson PML estimator.
|Date of creation:||03 Jul 2009|
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|Note:||View the original document on HAL open archive server: http://halshs.archives-ouvertes.fr/halshs-00401386|
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- Joao Santos Silva & Silvana Tenreyro, 2005.
"The log of gravity,"
LSE Research Online Documents on Economics
3744, London School of Economics and Political Science, LSE Library.
- Lionel Fontagne & Soledad Zignago, 2007. "A Re-evaluation of the Impact of Regional Agreements on Trade Patterns," Economie Internationale, CEPII research center, issue 109, pages 31-51.
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