Missing Gains from Trade?
Missing Gains from Trade?
复制标题
缺少贸易收益？
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
S. Redding
中科院分区：
文献类型：
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作者：
Marc J. Melitz;S. Redding
从贸易中获得福利收益的理论结果是国际经济学的一个核心原则。在一类满足“引力方程”的贸易模型中，贸易的福利收益可以仅使用开放经济国内贸易份额和贸易相对于可变贸易成本的弹性来计算。用这种定量方法衡量的贸易福利收益通常相对较小。在本文中，我们提出了一个渠道的福利收益，这种定量方法通常抽象：贸易引起的国内生产率的变化。使用一个连续生产模型，其中贸易引起生产的重组，提高国内生产率，我们表明，从贸易的福利收益可以变得任意大。
The theoretical result that there are welfare gains from trade is a central tenet of international economics. In a class of trade models that satisfy a "gravity equation", the welfare gains from trade can be computed using only the open economy domestic trade share and the elasticity of trade with respect to variable trade costs. The measured welfare gains from trade from this quantitative approach are typically relatively modest. In this paper, we suggest a channel for welfare gains that this quantitative approach typically abstracts from: trade-induced changes in domestic productivity. Using a model of sequential production, in which trade induces a reorganization of production that raises domestic productivity, we show that the welfare gains from trade can become arbitrarily large.
影响因子：
3.3
作者：
M. Larch
通讯作者：
M. Larch