Effectiveness of Pleasure Perception Training Group Therapy on Adolescents With Depression and Analysis of Factors Associated With Non‐Suicidal Self‐Injurious Behaviors

Objective This study is designed to explore the effectiveness of pleasure perception training group (PPTG) therapy on adolescents with depression and the factors that influence the presence of non‐suicidal self‐injurious behavior (NSSI). Methods A hundred and twenty adolescent depression patients were randomly assigned to either a control group ( n = 60, routine treatment) or an observation group ( n = 60, PPTG plus routine treatment) for two months. Outcome included depression (CDI), emotional intelligence (EIS), and self‐injury (OSI) scores. Patients were stratified into NSSI and Non‐NSSI groups based on NSSI history. Univariate and multifactorial logistic regression analyses were conducted to explore potential risk factors for NSSI. Results Post‐treatment, CDI scores decreased and EIS scores significantly increased in both groups, with greater changes in the observation group ( p < 0.05). OSI scores decreased in patients with NSSI, with lower scores in the observation group ( p < 0.05). Regression analysis identified family history of psychiatric disorders, left‐behind experience, childhood family dysfunction, childhood abuse, and exposure to school bullying as independent risk factors for NSSI (OR > 1, p < 0.05). Conclusion PPTG therapy effectively reduces depressive symptoms, enhances emotional regulation, and lowers NSSI in adolescents with depression. Several psychosocial factors independently increase NSSI risk.