SHIPPING COSTS, INFORMATION COSTS, AND THE SOURCES OF INDUSTRIAL COAGGLOMERATION*
利用新方法分别估计运输成本和信息成本，分解了美国制造业产业间共同集聚的成因，发现两者均显著影响都市层面的共同集聚，且信息成本对产业内集聚作用更大。
ABSTRACT Direct trade between establishments, coupled with costs of trading goods and information across space, has long been considered a primary determinant of industrial colocation. However, researchers have had difficulty decomposing the effects of interindustry trade into these two cost components. Using new techniques for separately estimating shipping and information costs, this paper provides an empirical framework for identifying the various sources of industrial coagglomeration among U.S. manufacturing industries. My findings suggest that both interindustry shipping costs and information costs influence metropolitan‐level coagglomeration. Additional evidence points to the significant role of direct information costs in determining intraindustry agglomerations.