Validating the Reactive–Proactive Aggression Questionnaire (RPQ) in South Korean Adults: A Psychometric and Cultural Adaptation Study

This study validated the Reactive–Proactive Aggression Questionnaire (RPQ) in South Korea setting using factor analysis, structural equation modeling, and differential item functioning. Differences in aggression type, reliability, and item difficulty suggest culturally specific response patterns among South Korean population, highlighting the importance of adapting psychological assessments for meaningful cross-cultural comparisons.