On the Friday (week 0, time point A) preceding the beginning of the project (week 1), all students were informed about the PBL project and were instructed to discuss and choose an existing product to adapt for new target groups. They filled in the questionnaires. In weeks 4 (time point B) and 8 (time point C), the instructions focused on the task of the upcoming week. After this, the students again filled in the questionnaires. Time points A, B and C are all during the teaching period, before a final exam in week 9.