Spanish Version of the Climate Change Anxiety Scale (CCAS-S): Adaptation and Validation Study.

The Climate Change Anxiety Scale (CCAS), developed by Clayton and Karazsia (2020), assesses the negative emotional impact of climate change on well-being. However, its psychometric properties have not yet been sufficiently explored for Spanish spoken in Spain and Spanish culture. This research introduces the Spanish version of the CCAS (CCAS-S), examines its psychometric properties, and provides validity evidence supporting its intended purpose. Two studies were conducted: first, the original version of the CCAS was translated into Spanish using a committee approach to translation design; second, 806 participants completed the CCAS-S along with additional assessment instruments to gather validity evidence. The 13-item Spanish version showed adequate reliability and internal structure validity evidence for the two-dimensional model, aligning with theoretical expectations. Nevertheless, a refined 10-item version distinguishing metacognitive impairment, emotional distress, and functional interference dimensions optimized the scale's intended purpose. The study discusses the conditions for using the CCAS-S measures and its practical implications.