One in nine people between the ages of 18 and 64 in the US, and every second foreign-born person in this age bracket, speaks Spanish at home. And whereas around 80 percent of adult immigrants in the US from non-English speaking countries other than Mexico are proficient in English, only about 50...

This study develops and estimates a model of the naturalization process in the US. The model is based on both the characteristics of immigrants and features of their countries of origin. The empirical analysis is based on the 2000 US Census. Both the characteristics of immigrants and the...

"A critical period for language learning is often defined as a sharp decline in learning outcomes with age. This study examines the relevance of the critical period to English proficiency among immigrants in the US. It uses microdata from the 2000 US Census, a model of language acquisition from...

"This paper analyzes the effect on earnings of the matching of English language skills to occupational requirements. It uses data from the Occupational Information Network (O*NET) database and a "Realized Matches" procedure to quantify expected levels of English skills in each of over 500...