This article explores how the past mobilities of academics affect their current research output (and its multidisciplinarity). Five types of mobility are used simultaneously in the analysis. Field mobility and transnational educational mobility are associated with academics' educational path, whereas transnational job mobility, intra-sectoral job mobility and inter-sectoral job mobility refer to their career path. The analysis is based on a representative sample of academics based in Hong Kong and Macau. Results show that intra-sectoral job mobility (up to a threshold) and transnational job mobility positively affect research output and its multidisciplinarity, whereas inter-sectoral job mobility, field mobility and transnational educational mobility exert slight or no effect. Nested analyses of Science, Technology, Engineering and Mathematics (STEM) and non-STEM academics as well as experienced and junior academics offer further insight into the roles of these mobilities. Impacts of mobile experience were stronger among junior than senior academics, and in STEM fields than non-STEM fields. The article discusses these findings along with the significance of considering mobilities rather than mobility when analysing academic trajectories and the determinants of academic research production.

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• Educational Sciences - Social Sciences