“…In fact, voluntary migration-particularly of the youngest and brightest people-is often motivated by the search for better employment opportunities that match their educational level (Docquier et al, 2014;Greenwood, 1975Greenwood, , 1985Williams et al, 2018), resulting in higher job satisfaction (Abreu et al, 2015) and higher salaries (Jewell & Faggian, 2014). While a number of studies have considered the impact of spatial mobility on the education-job match of university graduates (Dolton & Silles, 2008;Iammarino & Marinelli, 2015), the literature on PhD holders is still in its infancy (Alfano, D'Uva, et al, 2019;Alfano et al, 2021;Di Cintio & Grassi, 2017;Ghosh & Grassi, 2020).…”