Motivational–addictive profiles of nonsuicidal self-injury in Chinese youth: a cluster analysis with validation using external correlates (opens in new tab)

BackgroundNonsuicidal self-injury (NSSI) is heterogeneous, yet clinically useful exploratory subgrouping remains limited. We examined whether motivational and addiction-like features could delineate meaningful data-driven NSSI profiles and relate to clinically relevant outcomes.MethodsWe clustered six motive dimensions of the Ottawa Self-Injury Inventory (OSI; F1–F6) and an addiction-like score in adolescents (N = 311; age range: 12–21 years; mean age = 15.15 years, SD = 2.60). A three-cluste...