How systematic video reflection in teacher professional development regarding classroom discourse contributes to teacher and student self-efficacy

Recent professional development programs have enhanced teachers' ability to change their classroom discourse behaviour to a more dialogic style. Only a few programs investigate the role of video-based reflections in supporting teachers to change their practice. This study focuses on effects of the 'Dialogic Video Cycle' (DVC) on teacher self-efficacy as a prominent factor in teaching behavior. Additionally, changes in teachers' practice and the impact of the DVC on student self-efficacy were examined. Compared with a non-video reflection group, the video reflection group showed a positive trend in teacher self-efficacy and significant effects on practice changes. In the video reflection group, student self-efficacy also showed a positive trend. Video transcripts from the DVC workshops underline the role of teachers' self-beliefs.