Although the impact of non-cognitive factors, such as math anxiety, math test-taking anxiety, and attitudes toward mathematics, has been extensively studied, this area remains partially unexplored in the realm of national assessments. This research focuses on the analysis of the validity and reliability of an 11-item questionnaire introduced by…

Five studies document the validity of a new 8-item scale designed to measure "positivity," defined as the tendency to view life and experiences with a positive outlook. In the first study (N = 372), the psychometric properties of Positivity Scale (P Scale) were examined in accordance with classical test theory using a large number of…