International Social Survey Programme

Data Access

Data Download

The GESIS data catalogue provides complete ISSP data and documentation materials, including variable reports/ codebooks, basic questionnaires (in English), and country specific materials as printable PDF files. Downloads are available free of charge after registration.

In addition to the data access, the GESIS data catalogue offers study descriptions containing substantial and methodological information. Each data set version has a unique persistent Digital Object Identifier (DOI) which is an important element for the correct citation of a data set. Errata are always assigned to a data set version and need to be taken into consideration when analyzing this data. For errata and version history, please see the study description, section 'Errata in current version', of the corresponding dataset.

The GESIS online data portal ZACAT provides ISSP data and documentation. Its main purpose of use is to enable users to perform basic online analyses. ZACAT is publically available and free of charge. For information on the use of ZACAT, see ZACAT user guide.


ZACAT provides simple as well as detailed search facilities over all questions and variables of the ISSP series [see a step-by-step guide (627 kB) using Eurobarometer as example].

Example - Ref.: Recommendation on citation of research data:
ISSP Research Group (2019): International Social Survey Programme: Social Networks and Social Resources - ISSP 2017. GESIS Data Archive, Cologne. ZA6980 Data file Version 2.0.0,