Mixed-mode surveys are popular as they can save costs and maintain (or improve) response rates relative to single-mode surveys. Nevertheless, it is not yet clear how design decisions like survey mode or questionnaire length impact measurement quality. In this study, we compare measurement quality in an experiment of three distinct survey designs…

Humanitarian events are increasing globally, both in number and intensity. In response, the international community spends approximately US $30 billion annually to alleviate both the immediate consequences of these climatic, geographic, and human-induced events but also to support mitigation and recovery. Over the past two decades, the…

Social research methodologists have postulated that the transparency of survey procedures and data processing is mandatory for assessing the Total Survey Error. Recent analyses of data from cross-national surveys have demonstrated an increase in the quality of documentation reports over time and significant differences in documentation quality…

Policy evaluation studies, which assess the effect of an intervention, face statistical challenges: in real-world settings treatments are not randomly assigned and the analysis might be complicated by the presence of interference among units. Researchers have started to develop methods that allow to manage spillovers in observational studies;…

The Schwarz or Bayesian information criterion (BIC) is one of the most widely used tools for model comparison in social science research. The BIC, however, is not suitable for evaluating models with order constraints on the parameters of interest. This article explores two extensions of the BIC for evaluating order-constrained models, one where a…

The focus within the European tradition of democratic education has increasingly been on personal traits or character traits, values, and skills, rather than on broad structural features or systemic issues. This is reflected in a recent publication by the Council of Europe titled "Competences for Democratic Culture: Living Together as Equals…