Studied the effect of content knowledge on learners' participation in interactions between nonnative speakers. Measures of participation included amount of talk, conversational fillers, back channels, topic moves, clarification questions, and confirmation and comprehension checks. Findings support the relationship between knowledge and…

Investigates teacher reformulation of student talk in order to determine the manner in which teachers affect student meaning and expression. Findings indicate that reformulation is a device used by teachers to control classroom dialog and that teachers disproportionately perform the language functions most commonly associated with higher-order…