The current study investigated the extent to which L2 learners' productive vocabulary knowledge could predict multiple dimensions of spontaneous speech production. A total of 39 English as a foreign language (EFL) participants with varying L2 proficiency levels first completed a productive vocabulary knowledge task (Lex30). Their spontaneous…

This study identified robust predictors of expressive skills in academic English as a foreign language. The participants were 92 Korean-speaking learners of English. The field test of the Pearson Test of English Academic was used as a secondary data analysis. Four communicative skills (reading, writing, listening, and speaking) and six enabling…

This study investigated how task-based learning (TBL) developed the verbal competence of Chinese learners of English as a foreign language (EFL) by employing qualitative and quantitative analyses. We compared the impromptu oral presentations on reading texts of 76 intermediate EFL learners given respectively in the beginning and the end of the…

This cross-sectional study investigated the bilingual lexical skills of 175 US school-age children (5 to 18 years old) with Cantonese, Mandarin, or Korean as their heritage language (HL), and English as their dominant language. Primary study goals were to identify potential patterns of development in bilingual lexical skills over the elementary to…

We use a time-course analysis to examine the roles of vocabulary size and executive control in bilinguals' verbal fluency performance. Two groups of bilinguals and a group of monolingual adults were tested in English with verbal fluency subtests from the Delis-Kaplan Executive Function System. The two bilingual groups were equivalent in their…

There is a growing awareness of the importance of academic vocabulary, and more generally, of academic language proficiency, for students' success in school. There is also a growing body of research on the nature of the demands that academic language places on readers and writers, and on interventions to help students meet these demands. In this…