This literature study deals with the issue of how to conceptualize the supervisory behaviour of mentor teachers in mentoring dialogues by systematically examining empirical literature on key aspects of mentor teachers' behaviour during dialogues with prospective teachers. From the findings a model is derived which can be used to study mentor teachers' behaviour in mentoring dialogues. The model may be helpful in the further development of the quality of mentor teachers' behaviour in mentoring dialogues. (Contains 1 figure.)