Economic Integration and Convergence: A Second Decomposition Method
研究美国区域间收入趋同与分化的来源，通过分解区域收入差异为行业工资和行业结构两部分，发现产业结构的变动是19和20世纪美国区域人均收入趋同与分化的重要原因。
In this Journal , Sukkoo Kim investigates the sources of income convergence and divergence across regions in the United States. Kim argues that there are two sources of income convergence in regional economies linked by trade: convergence in regional wage rates and convergence in regional industry mixes. Using U.S. regional data on industry mix and worker income by industry, Kim decomposes differences in regional incomes into industry wage and industry-mix components. From his decompositions, Kim concludes that changing regional industrial structures “played an important role in causing the divergence and convergence of U.S. regional income per capita” in both the nineteenth and twentieth centuries..