Germany – Public-opinion polling services – Durchführung und Betreuung einer internationalen vergleichenden Bevölkerungsbefragung

The subject of the contract is the conception, programming, implementation and evaluation of an international comparative, longitudinal online panel survey in Germany, Sweden and the United States. The survey comprises three waves, which are to be conducted in the years 2027, 2029 and 2031. The contract includes in particular the questionnaire review and harmonisation, translation and linguistic validation, programming of the national online questionnaires, piloting, sample planning, recruitment and surveying of participants, panel management and re-contact, data preparation and weighting, as well as the creation of harmonised datasets, codebooks and reports.