focus on migration. The fact that knowledge diffusion requires direct human interaction implies that the international … diffusion of knowledge should follow the pattern of international migration. This is what this paper documents. Our main finding … is that migration, and particularly skilled immigration, is a strong and robust driver of productive knowledge diffusion …

migration duration for patterns of selection by integrating two workhorses of the labor literature, a search model and a Roy … cognitive ability. Longer migration episodes lead to stronger positive selection on both education and ability, as its … permanent migration, where search costs are higher. Labor market frictions explain observed complex network-skill interactions. …

focus on migration. The fact that knowledge diffusion requires direct human interaction implies that the international … diffusion of knowledge should follow the pattern of international migration. This is what this paper documents. Our main finding … is that migration, and particularly skilled immigration, is a strong and robust driver of productive knowledge diffusion …