Evaluating the Effectiveness of Multiple Open Student Models in EER-Tutor
Open Student Models (OSM) are beneficial for improving students' domain knowledge and meta-cognitive skills. The way in which the student model is displayed may be an important factor which has not been investigated adequately in the context of Intelligent Tutoring Systems (ITS). In our study, the control group had skill meters, while the experimental group additionally could access the OSM represented as a concept list, concept hierarchy or a concept map. The results show that OSM do have a positive effect on students' learning. However, the students showed clear preferences towards simpler representations than the more complex ones.