This study examined the impact of learner proficiency on the occurrence and resolution of language-related episodes (LREs) in rehearsal of interactive speaking tasks and on the subsequent use of language items from LREs during performance of the same tasks in front of the class. Forty-eight learners from six intact English as a foreign language…

Situated in the Vietnamese context, this article argues that rather than sideline knowledge of learners in favour of subject matter knowledge and pedagogical content knowledge as the basis of the knowledge base of LTE, prominence should be given to knowledge of learners if teachers' competence to teach responsively is desired.