Effects of interactivity of written practice on incidental vocabulary

Dialogue-based computer-assisted language learning (CALL) allows a learner to practice an L2 by discussing with a computer. By offering a fully controllable meaning-focused learning environment, it also allows to conduct research on the effectiveness of different modalities of interaction. In this study, we compare the effects of the interactivity of the writing activity on the incidental vocabulary acquisition. Interactive learning activities are often assumed to generate more learning outcomes than non-interactive ones (Chi, 2009).