Search

Response probabilities are used in adaptive and responsive survey designs to guide data collection efforts, often with the goal of diversifying the sample composition. However, if response probabilities are also correlated with measurement error, this approach could introduce bias into survey data. This study analyzes the relationship between response probabilities and data quality in grid questions. Drawing on data from the probability-based GESIS panel, we found low propensity cases to more frequently produce item nonresponse and nondifferentiated answers than high propensity cases. However, this effect was observed only among long-time respondents, not among those who joined more recently. We caution that using adaptive or responsive techniques may increase measurement error while reducing the risk of nonresponse bias.

The worldwide spread of the COVID-19 pandemic has disrupted the fieldwork of surveys. The data collection efforts via the face-to-face mode have been affected especially, including the ongoing surveys that were in the field during the COVID-19 outbreak and the planned surveys scheduled for fieldwork later in 2020. We provide an account of how COVID-19 has impacted two family studies in Germany: “The German Family Panel” (pairfam) and the “Generations and Gender Survey” (GGS) both of which will be part of the “Family Research and Demographic Analysis” (FReDA) infrastructure. Based on pairfam, we illustrate the effects of the pandemic on ongoing data collection and the measures taken to proceed with fieldwork, and we report on a special COVID-19 survey. Based on FReDA-GGS, we outline how COVID-19 has affected our planned survey schedules, what future challenges are expected when fieldwork becomes possible again, and how we have adapted our plans accordingly.