A VALIDATED MEASUREMENT MODEL AND CUT-OFF SCORES FOR ASSESSING STUDENTS' CREATIVITY AND INNOVATION

Abstract

This This study aimed to develop and validate a Creativity and Innovation (C&I) scale for 1,290 Thai high school students, based on a three-component framework: Think Creatively, Work Creatively with Others, and Implement Innovation. The scale demonstrated excellent content validity (CVR = 0.99) and high reliability (0.953 overall). Item Response Theory (IRT) using a Graded Response Model (GRM) showed that most items have very high discriminatory power. A second-order Confirmatory Factor Analysis (CFA) confirmed the three-component structure with excellent model fit (χ² = 52.337, RMSEA = 0.017, CFI = 0.999). Additionally, Latent Class Analysis (LCA) successfully identified four distinct student subgroups with varying C&I behavioral patterns. The four-class model was the most accurate (Entropy = 0.958). This research provides a robust psychometric tool and a practical framework for classifying students, which can inform tailored interventions to foster creativity and innovation.