Talents and Cultures: Immigrant Inventors and Ethnic Diversity in the Age of Mass Migration

Francesco Campo, Mariapia Mendola, Andrea Morrison and Gianmarco Ottaviano

Journal of the European Economic Association, 2022, vol. 20, issue 5, 1971-2012

Abstract: We investigate the importance of co-ethnic networks and diversity in determining immigrant inventors’ settlements in the United States by following the location choices of thousands of them across counties during the Age of Mass Migration. To do so, we combine a unique United States Patent and Trademark Office historical patent dataset on immigrants who arrived as adults with Census data and exploit exogenous variation in both immigration flows and diversity induced by former settlements, WWI, and the 1920s Immigration Acts. We find that co-ethnic networks play an important role in attracting immigrant inventors. Yet, we also find that immigrant diversity acts as an additional significant pull factor. This is mainly due to externalities that foster immigrant inventors’ productivity.

Date: 2022
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Working Paper: Talents and cultures: immigrant inventors and ethnic diversity in the age of mass migration (2022)
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