BackgroundEuropean countries, and especially Germany, are currently very much affected by human migration flows, with the result that the task of integration has become a challenge. Only very little empirical evidence on topics such as labor market participation and processes of social integration of migrant subpopulations is available to date from large-scale population surveys. The present paper provides an overview of the representation of the migrant population in the German Programme for the International Assessment of Adult Competencies (PIAAC) sample and evaluates reasons for the under-coverage of this population.MethodsWe examine outcome rates and reasons for nonresponse among the migrant population based on sampling frame data, and we also examine para data from the interviewers’ contact protocols to evaluate time patterns for the successful contacting of migrants.Results and ConclusionsThis is the first time that results of this kind have been presented for a large-scale assessment in educational research. These results are also discussed in the context of future PIAAC cycles. Overall, they confirm the expectations in the literature that factors such as language problems result in lower contact and response rates among migrants.

中文翻译：

---

大规模评估调查中的移民人口覆盖率。来自德国PIAAC的经验

背景技术欧洲国家，尤其是德国，目前受到人口迁移的巨大影响，结果融合的任务已成为一项挑战。迄今为止，大规模人口调查仅提供了很少的关于劳动力市场参与和移民亚人群社会融合过程等主题的经验证据。本文概述了德国成人能力国际评估计划（PIAAC）样本中移民人口的代表性，并评估了该人口未覆盖率的原因。基于抽样框架数据的移民人口，结果和结论这是首次将此类结果用于教育研究的大规模评估。这些结果还将在未来的PIAAC周期中进行讨论。总体而言，他们证实了文献中的期望，即语言问题等因素会导致移民之间的接触和回应率降低。