Immigration is one of the most important policy debates in Western countries. However, one aspect of the debate is often mischaracterized by accusations that higher levels of immigration lead to higher levels of crime. The evidence, based on empirical studies of many countries, indicates that...

The Roma are the largest ethnic minority in Europe - as well as one of the most disadvantaged. A triple vicious circle is at play: Substandard socio-economic outcomes reinforce each other; they fuel negative attitudes and perceptions, leading to ill-chosen policies; and segmentation is...

Empirical studies have found that achieving superdiversity - a substantial increase in the scale and scope of minority ethnic and immigrant groups in a region - can provide certain economic benefits, such as higher levels of worker productivity and innovation. Superdiversity can also provide a...

Border enforcement of immigration laws attempts to raise the costs of illegal immigration, while interior enforcement also lowers the benefits. Border and interior enforcement therefore reduce the net benefits of illegal immigration and should lower the probability that an individual will decide...

As global migration flows increase, so do the number of migrant students in host country schools. Yet migrants' achievement scores lag well behind those of their nativeborn schoolmates. Performance gaps are explained largely by differences in migrant parents' socio-economic background, cultural...

Language proficiency is a key driver of immigrant integration. It increases job opportunities and facilitates social and political participation. However, despite its vital importance, many immigrants never reach adequate proficiency in the host country language. Therefore, insights into the...

Many countries are experiencing increasing inflows of immigrant students. This raises concerns that having a large share of students for whom the host country language is not their first language may have detrimental effects on the educational outcomes of native children. However, the evidence...

In today's globalized world, people are increasingly mobile and often need to communicate across different languages. Learning a new language is an investment in human capital. Migrants must learn the language of their destination country, but even non-migrants must often learn other languages...