This article presents the results of a general population study that used three different modes of data collection administered sequentially. The study began with a letter that contained the link to an online survey. Those who did not respond were interviewed by phone or face-to-face. The article focuses on the cost of the study related to…

This paper analyses the quality of information collected by a self-administered survey responded to by a general population, who were offered the possibility of answering using the post or Internet. The analysis will be focused on the use of three grid questions with using rating scales with 6, 6 and 8 items, respectively. There was a polar point…

In this paper, I examine whether generalized trust and education, as well as social security policies of welfare state institutions matter for cross-national differences in subjective well-being (SWB), because knowledge on this issue is still lacking. For this purpose I integrated the insights of two sociological theories: Social Function…

The Teacher Education and Development Study in Mathematics (TEDS-M), conducted under the aegis of the International Association for the Evaluation of Educational Achievement (IEA), was designed to inform policy and practice in mathematics teacher education. For educational policymakers, TEDS-M contributes data on institutional arrangements that…