Background: In the context of large-scale educational assessments, the effort required to code open-ended text responses is considerably more expensive and time-consuming than the evaluation of multiple-choice responses because it requires trained personnel and long manual coding sessions. Aim: Our semi-supervised coding method eco (exploring…

Creative activities are typically thought to be positively associated with creative ability, whether because more creative individuals select into creative activities, or because those activities support the development of creativity, or both. However, the PISA 2022 creative thinking report revealed an unexpected finding: Creative ability was…

The aim of this paper is to discuss the role of coding and observation manuals in classroom studies. While observation manuals have been a part of the methodological toolkit for measuring various aspects of instruction for decades, the field has also been suffering from "paradigm wars," fragmentation and local production of instruments.…

The "PISA 2009 Technical Report" describes the methodology underlying the PISA 2009 survey. It examines additional features related to the implementation of the project at a level of detail that allows researchers to understand and replicate its analyses. The reader will find a wealth of information on the test and sample design,…