Migration is an important aspect of human society. It has existed throughout history, but in modern times it takes a new form. We propose a new approach to the world migration phenomenon as two complex directed networks (immigration and emigration) were countries represents network nodes, and...

Immigration is one of the most emotional topics in the political arena, which is an issue that has not gone unnoticed by economists. Recent studies usually examine sub-national areas to take advantage of the widely varying local concentrations of immigrants. Yet, there is no consensus on the...

Llull presents a cross-country analysis of the impact of immigration on productivity and employment. Push-distance interactions provide relevant and exogenous variation for identification. Results suggest that a 1 percentage point increase in the share of immigrants in the population reduces GDP...