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Dyadic surveys aim to interview pairs of respondents, such as partners in a relationship. In dyadic surveys, it is often necessary to obtain the anchors’ consent to contact their partners and invite them to a survey. If the survey is operated in self-administered modes, no interviewer is present to improve the consent rate, for example, by providing convincing arguments and additional information. To overcome the challenges posed by self-administered modes for dyadic surveys and to improve consent rates, it is important to identify aspects that positively influence the likelihood of anchors giving consent to contact their partners. Ideally, these aspects are in the hands of the researchers, such as the survey design and aspects of the questionnaire. Thus, in this study, we analyzed the relationship between anchors’ survey experience and their willingness to consent to surveying their partners in self-administered modes. Based on data from the German Family Demography Panel Study (FReDA), we found that the anchors’ perceptions of the questionnaire as “interesting” or “too personal” were related to consent rates. These relationships were consistent across different survey modes and devices. Effects of other aspects of the questionnaire, such as “important for science” and “diverse” varied between modes and devices. We concluded with practical recommendations for survey research and an outlook for future research. * This article belongs to a special issue on “Family Research and Demographic Analysis – New Insights from the German Family Demography Panel Study (FReDA)”.

This article introduces the evolution, framework, objectives, and design of the new data infrastructure “FReDA – The German Family Demography Panel Study”, which has been funded by the German Federal Ministry of Education and Research (BMBF) since 2020. FReDA is rooted in the Generation and Gender Survey (GGS) and the German Family Panel (pairfam). FReDA was initiated to facilitate research on family and demography by providing a comprehensive panel study allowing for international comparisons as well as dyadic analyses through a multi-actor design. The survey covers major fields of family research, such as fertility behaviour, reproductive health, work-family conflict, dyadic division of work, gender roles, intimate relations, separation and divorce, parenting and intergenerational relations, social inequalities, family attitudes, and well-being. FReDA interviews are conducted in a self-administered web-based (CAWI) or paper-based (PAPI) manner. The infrastructure consists of two different samples. First, the new FReDA-GGS survey started in early 2021, with a wave 1 study population of individuals aged 18 to 49 years and their partners. Second, the FReDA-pairfam survey will continue the 14-wave pairfam sample from 2022 onwards. The questionnaires of both samples will be harmonised as FReDA evolves. Data accessibility, organisation, and future perspectives of the data infrastructure are described and discussed in the paper’s conclusions.