AGGLOMERATION, CONGESTION, AND U.S. REGIONAL DISPARITIES IN EMPLOYMENT GROWTH
研究了2001-2010年美国就业增长地区差异的原因，发现拥挤效应在都市县中超过集聚效应，产业多样性和人力资本是主要影响因素，空间溢出效应表明政策需区域协调。
ABSTRACT Wide regional disparities exist in U.S. employment growth. To identify the causes of this disparities, we assess the relative contribution of locational characteristics to regional employment growth in the United States from 2001 to 2010 by estimating an employment growth model with the spatial‐lag effect. Results show that, at the margin, congestion effects dominate localized scale externalities in urban counties. A diverse industrial structure and rich human capital are the main factors that contribute to regional disparities in employment growth. Significant spatial‐lag effects indicate that spatial targeting and regional coordination are necessary to maximize the effectiveness of employment growth policies.