This study develops a theoretical framework for the study of the tendency for immigrant groups to be geographically concentrated. Testing the model for Australia shows that the extent of geographic concentration of immigrant groups is negatively related to age at migration, duration of residence...

This paper is concerned with the determinants of English language proficiency (speaking, reading and writing) among immigrants. It presents a model of immigrant destination language acquisition based on economic incentives, exposure to the destination language, and efficiency in second language...