From drains to bridges: The role of internationally mobile PhD students in linking non-mobile with foreign scientists

• 成果类型: Article
• 署名作者: Ito, Rodrigo; Chavarro, Diego; Ciarli, Tommaso; Cowan, Robin; Visentin, Fabiana
• 署名单位: Maastricht University; Maastricht University; Universidade Estadual de Campinas; University of Sussex; Universites de Strasbourg Etablissements Associes; Universite de Strasbourg; Stellenbosch University
• 刊物名称: JOURNAL OF DEVELOPMENT ECONOMICS
• ISSN/ISSBN: 0304-3878
• DOI: 10.1016/j.jdeveco.2025.103577
• 发表日期: 2025
• 关键词: International scientific mobility; Co-authorship networks; diaspora; Triadic closure; colombia

摘要

Internationally mobile scientists, by engaging with foreign counterparts during their time abroad, often become conduits for knowledge and access to international networks. While the direct benefits of such mobility to the individuals are well-documented, this paper investigates how these benefits may extend to their non-mobile colleagues in the country of origin who collaborate with them. We investigate the internationalization of a scientific system by analyzing the role that Colombian scientists who pursue a PhD abroad play in connecting non-mobiles with foreign scientists. Combining data from CVs, scholarship programs, and OpenAlex publications, we reconstruct the mobility path of 19,158 Colombian scientists and their co-authorship networks from 1990 to 2021. We show that co-authoring with mobile scientists is a way for non-mobile scientists to establish coauthorship links with foreign scientists. While the diaspora has traditionally been viewed as a brain drain, we find that not only returnees but also diaspora scientists connect local with foreign scientists. However, foreign collaborations appear largely dependent on the continued mediation of mobile scientists.