The literature on diffusion of knowledge has shown positive influence of physical and cultural proximity, common language and contiguity on the speed and magnitude of international knowledge flows. Knowledge diffusion is also facilitated by co-location, even temporary one, which helps...

Using a large survey spanning several years and more than 150 countries, we examine the importance of social networks in influencing individuals' intention to migrate domestically or internationally. We distinguish close social networks (composed of friends and family) and broad social networks...