Longitudinal word learning studies which control for experience can advance understanding of language learning and potential intra- and inter-language relationships in developing bilinguals. We examined novel word learning in both the first (L1) and the second (L2) languages of bilingual children. The rate and shape of change as well as the role…

This research investigated the use of a measure of expressive vocabulary to monitor the development of preschoolers learning English. Over 1200 preschoolers whose primary language was Somali, Hmong, Spanish, or English were assessed three times during one year using an Individual Growth and Development Indicator (IGDI) for Picture Naming, a…

Previous studies show that young monolingual children's ability to "fast map" new word forms is closely associated with both their age and existing vocabulary knowledge. In this study we investigate potential relationships between age, fast mapping skills and existing vocabulary knowledge in both languages of developing bilingual preschool…

This study examined how providing either primary- or English-language storybooks for home reading followed by classroom storybook reading and vocabulary instruction in English influenced English vocabulary acquisition. Participants in the study were preschool children (N = 33), from low socioeconomic status families, whose primary language was…

This study documented English acquisition by a group of Hmong adult immigrants over a period of one year, and explored the factors that appeared to be affecting their progress. Based on three measures (a test of listening comprehension, communication, fluency, reading, and writing; a pictured English vocabulary recognition test; and a written…