Phase 3: Data collection

The phase of the data collection and preparation requires a specific know-how. Our experience with methodologically exacting national and international survey programs is a natural component of the services we offer.


Support in every process stage of developing instruments

Survey Operations

Guidance and help with control and quality assurance in the field


Collect survey data within a probability-based mixed-mode access panel

Best-Practice Data Collection: Surveys by GESIS

  • ALLBUS: Die Allgemeine Bevölkerungsumfrage – The German General Social Survey
  • GLES: The German Longitudinal Election Study is the largest long-term German election study.
  • PIAAC: The Programme for the International Assessment of Adult Competencies of the OECD measures adult skill levels across 30 countries.
  • ISSP: The International Social Survey Programme; social science relevant topics from 47 countries.
  • EVS: The European Values Study describes value change in 47 countries.
  • ESS: The European Social Survey is a social science survey examining the social and political attitudes of citizens in 30 European countries
  • GESIS Panel: The GESIS Panel offers the social science community a unique opportunity to collect survey data within a probability-based mixed-mode access panel.