Many of the questions were taken or adapted from existing publications about prior ideas on acoustics at other education levels. This enables comparison of our results with those from the literature, where applicable, despite possible differences in education level. In addition, every question was examined and discussed previously by all four authors and other experienced colleagues, and after its use in the first of the three semesters mentioned above, only minor corrections were deemed necessary after evaluating the coherence between answers and questions, in order to ensure the reliability of the questionnaire.