The Impact of Childhood Trauma on Self-Harm Behavior Among Secondary Vocational School Students: The Sequential Mediating Role of Rumination and Psychological Inflexibility

Objective To explore the relationship between childhood trauma and self-injurious behavior among secondary vocational school students, and the chain mediating role of rumination and psychological inflexibility therein. Methods In April 2021, an online questionnaire survey was conducted among 3,963 secondary vocational school students using the Childhood Trauma Questionnaire (CTQ), the 10-item Rumination Response Scale (RRS-10), the Acceptance and Action Questionnaire-II (AAQ-II) combined with the Chinese version of the Cognitive Fusion Questionnaire (CFQ), and the Adolescent Non-Suicidal Self-Injury Questionnaire. SPSS 23.0 and Mplus 8.3 software were used for data analysis. Common method bias testing, between-group differences...