This dissertation draws on both qualitative and quantitative approaches to investigate the linguistic practices of teachers and children who are learning Mandarin Chinese as a Heritage Language (CHL) in two dual immersion preschools in California. CHL children have been interpreted as novice members in local speech communities who actively explore…

This investigation of English immersion learners explored processes of learning English, patterns of language use, and levels of comprehensibility among 34 predominantly Spanish-speaking 12th graders at the American School of Asuncion in Asuncion, Paraguay. The analysis of data from language learning histories, group interviews, perceived…

This pilot study investigates the performance in French of five English-speaking children, who are enrolled in their sixth year of a primary French immersion program in a Toronto elementary school. From speech data obtained in individual interviews, an analysis is made of the students' control of the French verb system. The subjects are found to…

Examples of the spontaneous speech in French of native English speakers, average age 7.6 years, were collected at the end of their second year in a French immersion program. Results show that the native language strongly influences second language speech production. While vocabulary and pronunciation are of course predominantly French, the…

The Development of Bilingual Proficiency is a large-scale, five-year research project begun in 1981. The final report contains three volumes, each concentrating on specific issues investigated in the research: (1) the nature of language proficiency, including second language lexical proficiency and the development and growth of metaphor…