Specific Factors, Learning, and the Dynamics of Trade*
构建了一个动态一般均衡模型，解释发达国家间贸易增速远超GDP的现象，强调特定技能的学习效应和知识溢出对贸易模式的影响。
In the postwar period, the volume of trade among developed countries has increased at a much higher rate than GDP. This article presents a dynamic general equilibrium model of trade between developed countries that accounts for this pattern of trade dynamics. Countries trade in goods that use good‐specific skilled labor and unskilled labor as factors of production. Specific skills are learned on the job and there exist positive effects in learning. Small initial differences in the distribution of experts in each country generate an increasing pattern of specialization over time. Knowledge spillovers across sectors are crucial determinants of the trade pattern.