SOEP Research: Survey Methodology and Data Science

Validating an Index of Selection Bias for Proportions in Non-probability Samples

Fast online surveys without sampling frames are becoming increasingly important in survey research. Their recruitment methods result in non-probability samples. As the mechanism of data generation is always unknown in such samples, the problem of non-ignorability arises making vgeneralisation of calculated statistics to the population of interest highly questionable. Sensitivity analyses provide a ...

Revision and Cross-cultural Adaptation of the Human Values Scale for Self-completion Modes

Since its first round, the European Social Survey (ESS) has included a 21-item measure of ten basic human values shared across cultures, known as the Human Values Scale (HVS), developed by Shalom H. Schwartz. Recently, the scale has been revised to a new 20-item HVS with shorter, simpler items (usually only one sentence instead of two sentences per item in the past version) and introducing a single ...

Gratitude in Fundraising: Do ‘Thank You in Advance’ and Handwritten Thank You Notes Impact Fundraising Success?

While almost all charities rely on a set of donor appreciation strategies, their effectiveness for the success of fundraising campaigns is underresearched. Through two preregistered field studies conducted in collaboration with a leading German opera house (N = 10,000), we explore the significance of expressing gratitude and examine two different approaches to doing so. Our first study investigates ...

SOEP Annual Report 2024

Immigration, Segregation, and Attitudes Toward Immigrants: A Longitudinal Multiscalar Analysis across Egohoods

Evidence on how proximity to ethnic outgroups shapes attitudes toward immigration remains inconclusive. We suggest this may be driven, in part, by the fact that studies rarely account for the role of residential segregation. We argue that how the minority-share in an environment affects majority-group attitudes will depend on how segregated groups are from one another. To explore this, we undertake ...

Effects of Changing the Incentive Strategy on Panel Performance: Experimental Evidence From a Probability-Based Online Panel of Refugees

This study investigated how changing the mode of incentive administration between two panel waves, spaced six months apart, affected longitudinal survey response. A split-ballot incentive experiment was used to compare shifting from an unconditional pre-paid incentive mode in the first wave to a conditional post-paid mode in the second wave, versus consistently using a conditional post-paid mode across ...

Post-Migration Stress Mediates Associations Between Potentially Traumatic Peri-Migration Experiences and Mental Health Among Middle Eastern Refugees in Germany

Background On their way to host countries, refugees are often exposed to severe adversity, including cumulative experiences of fraud, extortion, robbery, detention, and shipwrecks, as well as prolonged, life-threatening small boat crossings. However, little research has examined the long-term impact of such peri-migration stressors on subsequent stress and mental health after arrival. This study explored ...

SOEPcampus@DIW Berlin 2025

On November 17 and 18, 2025, we are organizing a two-day workshop on the Socio-Economic Panel (SOEP) at DIW Berlin. In addition to presentations on the composition, data structure, sampling design, and weighting strategy, hands-on sessions will offer a practical approach to the data and its potential. The workshop is aimed at researchers at all qualification levels who want to work with SOEP data...

Learn to use the SOEP over lunch

The German Socio-Economic Panel Study is a representative panel study for the German population, collecting data on a broad variety of topics of everyday life, including general well-being, household composition, educational aspirations and educational status, income and occupational biographies, leisure time activities, housing, health, political orientation and more. With its long running panel...

Register now for the online workshop series SOEPcampus: Learn to use the SOEP over lunch

In Nov/Dec 2025 our online over lunch seminar series returns with one last workshop this year. The workshop provides a comprehensive, practical introduction to the data of the Socio-economic Panel (SOEP) on three Wednesdays during lunchtime. Participants will learn about the study's content, data structure, sample selection, and weighting strategy, along with an overview of the study documentation. To ...