Immigration and Ideas: What Did Russian Scientists “Bring” to the United States?
利用俄罗斯科学家数据和美国对苏联时期出版物的引用，研究了高技能移民如何促进知识扩散，发现移民到来显著增加了对苏联时期工作的引用，且高影响力论文和先前可获取的论文更易产生知识溢出。
This paper examines how high-skilled immigrants contribute to knowledge diffusion using a rich data set of Russian scientists and US citations to Soviet-era publications. Analysis of a panel of US cities and scientific fields shows that citations to Soviet-era work increased significantly with the arrival of immigrants. A difference-in-differences analysis with matched paper pairs also shows that after Russian scientists moved to the United States, citations to their Soviet-era papers increased relative to control papers. Both strategies reveal scientific field-specific effects. Ideas in high-impact papers and papers previously accessible to US scientists were the most likely to "spill over" to natives.