The dimensional-categorical hybrid model of personality disorders in DSM-5 from an adolescent psychiatric perspective - criticism and critical outlook]

By applying the dimensional-categorical hybrid model, Chapter III of the DSM-5 proposes a central innovation in the classification of personality disorders, the aim being a reduction of comorbidity and improvement of the construct as well as the discremental validity and stability of the diagnosis. The well-known categorical classification of personality disorders in Chapter II, however, remains valid. Based on the hybrid model the essential aspects of a personality disorders are as follows: the dimensional assessment of levels of personality functioning regarding disturbances in self (identity and self-direction) and interpersonal (empathy and intimacy) aspects on the one hand, and the existence of pathological personality traits on the other. Beside five higher-order traits, 25 specific trait facets are described. Moreover, a reduction in the number of personality disorder types is proposed, reflecting six instead of ten categories which are empirically best validated. The abandoned age limitation for the assessment of a personality disorder in Chapter III can be regarded as a clear statement with respect to the possibility and necessity of diagnosing and treating personality pathology in adolescence. By presenting an additional dimensional approach with a detailed description of personality functioning as well as specific pathological personality traits, the new hybrid model seems to principally be a useful approach for clinical purposes as well as research questions.