Since January 2019, the data of the whole sample (4,096 twin families) has been available as Scientific Use Files (SUF). For scientists they are available for free (after application) at the
data catalogue of GESIS where you can also find further information about the application and the content of the SUF.
Currently, the second wave has been published with data from the first two household and telephone surveys, so that longitudinal analyses are already possible. The data of the first Covid-19-related questionnaire from summer 2020 have also been released.
The data of further survey waves will be conditioned in the upcoming years and they will be provided to reserachers. Because of this, comprehensive analyses will be possible (for example on the developmental courses of the twins).
A short flyer containing the most important information on the data release can be downloaded
here.
Please send the filled and signed data application form (please download from GESIS under "Data & Documents") via mail, fax or by mailing route to:
GESIS - Leibniz-Institut für Sozialwissenschaften
Datenservice
Unter Sachsenhausen 6-8
50667 Köln
GERMANY
Fax: ++49-221-47694-8420
Mail: datenservice.das@gesis.org (please contact if you have any questions about the application of the data, too)
The data has been anonymized, so no identification of the participants is possible. The data also has been checked for plausibility and consistency.