respondent's latent expertise on the cantonal political system, measured in 5 discrete categories (based on latent_expertise_cantonal)

respondent's latent expertise on the cantonal and federal political system together (based on a 2–3 parameter logistic Item Response Theory (IRT) model, also known as Birnbaum model, fed with passed_skill_question_1_federal, passed_skill_question_2_federal, passed_skill_question_3_federal, passed_skill_question_1_cantonal, passed_skill_question_2_cantonal and passed_skill_question_3_cantonal)

respondent's latent expertise on the cantonal and federal political system together, measured in 5 discrete categories (based on latent_expertise)