In this preregistered, longitudinal study of early code-switching, 34 US-born, Spanish-English bilingual children were recorded with a bilingual family member at 2;6 and 3;6, in Spanish-designated and English-designated interactions. Children's Spanish and English expressive vocabulary and their exposure to code-switching were measured through…

Purpose: This article aims to describe how exemplar variability can manipulate the word learning environment to maximize within- and cross-language generalization in Spanish--English bilinguals. Furthermore, we examined sources of individual variability that predicted word learning. Method: Nineteen Spanish--English bilingual children participated…

Despite individual differences, all bilinguals share the ability to act in their native language, in their second language, and to switch back and forth between the two languages they know (Van Hell, 1998). Chinese is the largest Asian American ethnic group in the United States. Their use of code-switching is an increasingly important issue in…

An ongoing longitudinal study, 15 years old at the time of publication, is reported. It is a sociolinguistic, developmental study of the acquisition of two languages, Spanish and English, by a boy from birth, with data drawn from direct observation and occasional tape recordings of speech. An introductory chapter outlines the objectives and method…