Exports and the Structure of Immigrant-Based Networks: The Role of Geographic Proximity
研究美国国内外的移民网络结构如何影响各州出口，发现本地移民人口对出口的促进作用大于外州同族移民，且对新移民群体效果更强。
This study empirically investigates the structure of immigrant based networks, both internationally and intranationally within the United States and how they affect U.S. export volume. Specifically, we examine the relationship between state populations of immigrant groups and the volume of state exports to the home country of the immigrant group. We compare the estimated effects of local immigrant populations on state exports to the effects of out-of-state populations of the same immigrant group and find the former effect to be greater than the latter. In addition, we find that the network effects are greatest for newer immigrant groups. © 2005 President and Fellows of Harvard College and the Massachusetts Institute of Technology.