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Estimating the Extensive Margin of Trade

João Santos Silva (), Silvana Tenreyro () and Kehai Wei

Economics Discussion Papers from University of Essex, Department of Economics

Abstract: Understanding and quantifying the determinants of the number of sectors or firms exporting in a given country is of relevance for the assessment of trade policies. Estimation of models for the number of sectors, however, poses a challenge because the dependent variable has both a lower and upper bound, implying that the partial effects of the explanatory variables on the conditional mean of the dependent variable cannot be constant and must approach zero as the dependent variable approaches the bounds. We argue that ignoring these bounds by using OLS or count-data models that ignore the upper bound can lead to erroneous conclusions due to the model's misspecification. We propose a flexible specification that accounts for the doubly-bounded nature of the dependent variable. We empirically investigate the problem and the proposed solution, and find significant differences between estimates obtained with the proposed estimator and those obtained with standard approaches.

Keywords: Bounded data; Estimation of trade models; Number of sectors. (search for similar items in EconPapers)
Date: 2012
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Related works:
Working Paper: Estimating the Extensive Margin of Trade (2015) Downloads
Journal Article: Estimating the extensive margin of trade (2014) Downloads
Working Paper: Estimating the extensive margin of trade (2014) Downloads
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