Regional Integration and Trade: Controlling for Varying Degrees of Heterogeneity in the Gravity Model
Regional Integration and Trade: Controlling for Varying Degrees of Heterogeneity in the Gravity Model
复制标题
区域一体化与贸易：在引力模型中控制不同程度的异质性
DOI：
10.1111/j.1467-9701.2009.01180.x
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
M. Stack
中科院分区：
文献类型：
--
作者：
M. Stack
20世纪90年代区域贸易协定（rta）的激增促使人们重新对研究区域一体化对贸易的影响感兴趣。利用1992-2003年期间12个欧盟国家对20个经合组织贸易伙伴的双边出口流量的面板数据集，欧洲区域一体化的贸易效应（由欧盟假人表示）通过一系列固定效应（FE）规范进行了检验，其中每一个都被认为是重力模型的正确计量经济学规范。通常（时变）经济变量较少，固定效应丰富，有限元规范允许重力模型中不同程度的异质性。本文估计了两种重力模型：传统贸易决定因素的重力模型和新贸易理论决定因素的重力模型。两种重力模型都提供了合理的系数估计，尽管它们在传统重力模型的FE规范中有所不同。两个重力模型都一致地表明，随着模型中异质性程度的增加，欧盟虚拟系数的大小下降并变得不显著。这表明，在重力框架内评估贸易政策影响时，计量经济学规范的根本重要性。
The proliferation of regional trade agreements (RTAs) in the 1990s prompted a renewal of interest in studying the effect of regional integration on trade. Using a panel dataset of bilateral export flows from 12 EU countries to 20 OECD trading partners over the period 1992–2003, the trade effect of European regional integration, denoted by an EU dummy, is examined across a number of fixed effects (FE) specifications, each of which has been claimed as the correct econometric specification of the gravity model. Typically parsimonious in (time-varying) economic variables and abundant in fixed effects, the FE specifications allow for varying degrees of heterogeneity in the gravity model. Two gravity models are estimated: a gravity model of traditional trade determinants and a gravity model of new trade theory (NTT) determinants. Both gravity models provide reasonable coefficient estimates, although they vary somewhat across the FE specifications for the traditional gravity model. Both gravity models are congruent in suggesting that the coefficient of the EU dummy declines in magnitude and becomes insignificant as an increasing degree of heterogeneity is admitted into the model. This suggests the fundamental importance of the econometric specification when evaluating trade policy effects within a gravity framework.
影响因子：
8
作者：
BERGSTRAND, JH
通讯作者：
BERGSTRAND, JH