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"Gravity Model Specification and the Effects of the Canada-U.S. Border"
by Howard J. Wall

There is a well-established literature finding that the Canada-U.S. border has a large dampening effect on trade, is asymmetric, and differs across provinces. In this paper, I demonstrate that the standard gravity model used to obtain these results provides biased estimates of the volume of trade. I attribute this to heterogeneity bias and reestimate the effects of the border using a gravity model that allows for heterogeneous gravity equations. Doing so does not alter the general results of existing studies, although it does yield a border effect that is 40 percent larger, reverses the border's asymmetry, and indicates very different provincial effects.

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Category > International
Category > Regional Economics
Author > Howard J. Wall
Research Papers and Publications: JEL Code > F14
Research Papers and Publications: JEL Code > F15
Research Papers and Publications: JEL Code > R10


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