The Impact of Long-term Scientific Mobility on the Creation of Persistent Knowledge Networks

<italic>This paper investigates the impact of long-term international scientific mobility - associated with advanced training or research positions - on knowledge network formation and network persistence In particular, it investigates whether and in which conditions relationships established during extended periods of co-location in one organisation play a relevant role in the subsequent knowledge exchange activities of the mobile scientists. Empirical research on the case of Portuguese scientists in three different fields provides evidence on the relevance and persistence of the networks established in those conditions and identifies some factors that increase the likelihood of these effects taking place</italic>.