Thank you for your feedback!
We understand that the question about education levels may have been confusing, especially when trying to map the German school system to the categories provided.
The answer options in our survey are based on ISCED 2011 – the International Standard Classification of Education, developed by UNESCO. This is a globally recognized framework used to ensure that education levels can be compared across countries, despite differences in national education systems.
To help clarify, here is how the German terms you mentioned generally correspond to ISCED categories:
- Grundschule → Primary Education
- Hauptschule / Realschule → Lower Secondary Education
- Gymnasium (until Abitur) → Upper Secondary Education
- Studium (university studies) → depending on the degree (Bachelor’s degree or equivalent tertiary education level / Master’s degree or equivalent tertiary education level Doctoral degree or equivalent tertiary education level)
Thank you for completing the survey and for your thoughtful feedback. The similarity between some questions is intentional and follows common scientific practice when measuring complex or abstract concepts. Using multiple, slightly varied items that target the same construct increases the reliability and validity of the data by capturing subtle nuances and reducing the influence of random response variation. While your suggestion to show only a subset of such items through adaptive platforms is valid and worth exploring, fixed item sets are generally preferred in research settings to ensure consistent and robust measurement. We appreciate your input and will consider it in future survey design improvements.