Macaro has stated that the choice between a monolingual, immersive, target language-only pedagogy versus a non-immersive, multilingual pedagogy is 'probably the most fundamental question facing second language acquisition (SLA) researchers, language teachers, and policymakers'. Recognizing that prior empirical work on monolingual versus…

The present study examined the interaction effects between teachers' choice of language in lexical explanation and second language (L2) learners' proficiency level on the learning of phrasal verbs and listening comprehension in a meaning-focused listening activity. Undergraduate L2 learners with two different levels of proficiency (intermediate…

This study investigated the effect of teacher codeswitching on second language (L2) vocabulary acquisition during listening comprehension activities in a lexical Focus-on-Form context. To date there has been research on teacher beliefs about first language (L1) use, its functions and its distribution in the interaction, but little on its effect on…