German Internet Panel

The German Internet Panel (GIP) is a long-term longitudinal study at the University of Mannheim. The GIP researches individual attitudes and preferences that are relevant in political and economic decision-making processes. For this purpose, more than 3,500 people across Germany are regularly interviewed online on wide range of topics since 2012.

Research questions from scientists at the University of Mannheim and external scientists can be integrated into the bimonthly GIP studies.

If you are interested in collecting data for your research via the GIP, please contact us:

We will be happy to discuss with you whether and when the questions of your planned project can be integrated into the GIP and what the costs would be.

Overview of the GIP

Using GIP Data

Information on data use and data access

Ask your own questions in the GIP

Information on how to proceed

Results with the GIP

Publications and selected results of our surveys

About Us

Our work and the GIP team


Interview, April 2024

Interview of the Mannheim Center for Data Science (MCDS) with Dr. Tobias Rettig

Rettig & Blom, 2024

Investigating Respondent Attention to Experimental Text Lengths

Rettig & Struminskaya, 2023

Memory Effects in Online Panel Surveys: Investigating Respondents’ Ability to Recall Responses from a Previous Panel Wave

Cornesse, Blom, Sohnius, González Ocanto, Rettig & Ungefucht 2023

Experimental Evidence on Panel Conditioning Effects when Increasing the Surveying Frequency in a Probability-Based Online Panel


German Internet Panel

German Internet Panel

University of Mannheim
University Library
Schloss Schneckenhof
68161 Mannheim