This paper identifies the migration policies that emerge when both the sending country and the receiving country wield power to set migration quotas, when controlling migration is costly, and when the decision of how much human capital to acquire depends, among other things, on the migration...

Migrant scientists outperform domestic scientists. The result persists after instrumenting migration for reasons of work or study with migration in childhood to minimize the effect of selection. The results are consistent with theories of knowledge recombination and specialty matching.

Results presented in this paper based on the new database on immigrants and expatriates in OECD countries, show that (i) the percentage of the foreign-born in European OECD countries is generally higher than the percentage of foreigners; (ii) international migration is quite selective towards...

This paper reviews four decades of economics research on the brain drain, with a focus on recent contributions and on development issues. We first assess the magnitude, intensity, and determinants of the brain drain, showing that brain drain (or high-skill) migration is becoming a dominant...

Increasing international migration and changing immigrant populations in OECD countries make international comparable data on migrant populations essential. These data should be updated regularly to capture a detailed picture of migrant populations. This document presents the first results of...

Increasing international mobility makes international comparable data even more important, to depict global migration patterns and its characteristics, not only in receiving countries but also in origin countries. This paper provides a detailed picture of immigrant and emigrant populations...

We draw a distinction between the social integration and economic assimilation of migrants, and study an interaction between the two. We define social integration as blending into the host country’s society, and economic assimilation as acquisition of human capital that is specific to the host...

Growing international migration and diverse characteristics of migrant populations make internationally comparable high-quality data on migrants essential. Regular update of these data is crucial to capture the changes in size and composition of migrant populations. This document presents the...

Recent research suggests that the welfare gains that would result from removing restrictions on international migration are large. The long-run impact of a higher level of international migration on the global economy is potentially even larger if it triggers an increase in the global growth...

This chapter discusses the research in economics on refugees and asylum seekers. Section 1 describes the trends in asylum seeking by source and host country. Section 2 presents a conceptual framework on why refugees might differ from other types of immigrants, and provides a new analysis...