Data access K²ID-SOEP

A scientific use file of the K2ID-SOEP data will be made available after the end of the project. Users can obtain access via the Research Data Center of the SOEP (Socio-Economic Panel Study). Only registered SOEP users are allowed to use data from the K2ID-SOEP extension study. When requesting access to the SOEP, users may indicate if they wish to receive the K²ID-SOEP data. For more information, please contact Michaela Engelmann ( or the principal investigators of the study, Professor C. Katharina Spiess ( or Professor Pia S. Schober (


Citation guidelines

Researchers working with the K²ID-SOEP extension study are obligated to mention their use of the data within their publication, e.g., in the acknowledgements, by using the following reference:

“This paper uses data from the K²ID-SOEP extension study (doi: 10.5684/k2id-soep-2013-15/v1). The K²ID-SOEP extension study was funded by the Jacobs Foundation.”

In addition, all publications based on the K²ID-SOEP extension study are required to cite the following reference:

Pia S. Schober, C. Katharina Spieß, Juliane F. Stahl, Gundula Zoch and Georg F. Camehl (2017): "The Early Childhood Education and Care Quality in the Socio-Economic Panel (SOEP-ECEC Quality) Study - K²ID-SOEP Data”, Data Documentation 91, Berlin: DIW Berlin.