Abstract
Identity Diffusion Among Adolescents - Validation of the Inventory of Personality Organization in a Clinical Adolescent Sample (IPO-A) The main objective of the current study was to analyze the psychometric properties of the German version of the Inventory of Personality Organization for Adolescents (IPO-A). The instrument consisting of 91 items is based on the theoretical structural model by Kernberg and investigates the severity of identity diffusion, reality testing and defense mechanisms in order to determine the level of personality organization. The factor structure, the internal consistency and the convergent validity was measured among 144 inpatients aged between 13 and 18 years drawn from the Child and Adolescent Psychiatry of the University Clinic of Cologne. The investigation revealed a five factor structure: identity diffusion, reality testing, defense mechanisms, aggression and instability of goals. Moreover, testing the psychometric properties of the instrument showed a high internal consistency and meaningful significant correlations with well-validated youth self-report instruments assessing personality pathology and psychopathology. Thus, the results indicate that the IPO-A can be considered to be a reliable instrument that measures personality organization and identity diffusion in adolescents with personality disorders.
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