• Critical thinking dispositions are essential in nursing education and clinical judgment. • This study validates a reliable Greek CTDS with confirmed two-factor structure. • The scale enables rapid assessment to guide teaching strategies and improve practice. Critical thinking is a core competency in nursing, directly influencing clinical judgment, decision-making, and patient safety. Although several instruments assess critical thinking dispositions, few are brief, culturally adaptable, and validated for Greek nursing students. The Critical Thinking Disposition Scale (CTDS) offers a concise and reliable measure but had not been previously translated or validated in Greek. This study provides the first Greek translation, cultural adaptation, and psychometric validation of the CTDS. Using a rigorous forward–backward translation process and expert review, the scale was adapted to ensure conceptual and linguistic equivalence. A sample of 159 undergraduate nursing students completed the Greek CTDS and the Ten Item Personality Inventory to examine reliability and convergent validity. The Greek CTDS demonstrated strong internal consistency (α = 0.81–0.83), excellent test–retest reliability (ICC = 0.91), and a confirmed two-factor structure through confirmatory factor analysis. Significant correlations with Openness to Experience support its convergent validity. The Greek version of the CTDS is a brief, reliable, and culturally equivalent instrument for assessing critical thinking dispositions. Its robust psychometric properties support its use in the evidence-based evaluation of educational interventions and the advancement of clinical judgment within Greek nursing education. Furthermore, it provides a stable benchmark for future cross-cultural research in healthcare settings.
Fradelos et al. (Wed,) studied this question.