Non-cognitive skills are routinely measured using self-reports in the context of large-scale international assessments. However questions remain on the adequacy of self-reports to conduct comparisons. Measures that exploit test-taker's behaviour during the completion of questionnaires or of the cognitive tests have been proposed in the literature…

With rising importance of collaborative problem-solving skills (CLPS) for the new information age, the PISA 2015 assessed students' CLPS skills on a large scale. This new attempt to measure CLPS raises an issue of validity. The purpose of this research is to examine evidence for convergent validity of CLPS through investigating the relationships…