Questionnaire scales that are mixed-worded, i.e. include both positively and negatively worded items, often suffer from issues like low reliability and more complex latent structures than intended. Part of the problem might be that some responders fail to respond consistently to the mixed-worded items. We investigated the prevalence and impact of…

This study aimed at examining the suitability of questionnaire instruments commonly used in large-scale assessments for measuring non-cognitive school effectiveness criteria. It focused on questions of reliability and validity for capturing changes in students within schools across time and the instruments' sensitivity to school effects. The aim…