Migration is a key feature of a modern and open society. A new feature is that migration shows a high degree of heterogeneity and hence has various complex impacts on the economy. This paper aims to map out the causes and consequences of heterogeneous immigration flows. It sets out a policy...

In the age of migration, many developed countries face an increasing heterogeneity of their residents. Migrant flows often lead to political discussion about the impact of migrants on labour markets, economic growth, and urban agglomeration processes, and consequently many of these causalities...

We design a conceptual framework for linking two approaches: the literature on absorptive capacity and the literature on spatial knowledge spillovers. Regions produce new knowledge, but only part of it is efficiently adopted in the economy; the share of efficiently adopted technology depends on...