Psychometric properties and cross‐cultural adaptation of the Japanese version of the Affective Reactivity Index: A community‐based study of adolescent irritability
Community-based analysis reveals reliable self-reports of irritability in adolescents, suggesting strong construct validity for the Affective Reactivity Index.
Key Points
Reliability of the Affective Reactivity Index was confirmed with scores of α = 0.86 for self-reports and α = 0.82 for parent-reports.
Construct validity was assessed through examining associations between depressive symptoms and emotional problems, reinforcing the index's effectiveness.
Item response theory analysis validated psychometric properties in a Japanese context, supporting cross-cultural adaptation efforts.
Findings point to the importance of culturally adapted tools for assessing adolescent irritability in both clinical and research frameworks.