Ethnic Scientic Communities and International Technology Di¤usion
نویسنده
چکیده
This study explores the importance of tacit knowledge transfer for international technology di¤usion by examining ethnic scienti c communities in the US and their ties to their home countries. US ethnic research communities are quanti ed by applying an ethnic-name database to individual patent records. International patent citations con rm knowledge di¤uses through ethnic networks, and manufacturing output in foreign countries increases with an elasticity of approximately 0.3 to stronger scienti c integration with the US frontier. To address reverse-causality concerns, reduced-form speci cations exploit exogenous changes in US immigration quotas. Consistent with a model of sector reallocation, output growth in less developed economies is facilitated by employment gains, while more advanced economies experience sharper increases in labor productivity. The ndings suggest tacit knowledge channels partly shape the e¤ective technology frontiers of developing economies. JEL Classi cation: F22, J44, J61, O31, O32, O33, O41, O57.
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