Nature and Assessment of Personality Pathology and Diagnosis.

This article demonstrates the contribution of Otto Kernberg's object relations theory of personality pathology to the current understanding of the nature and assessment of personality pathology and diagnosis. The article introduces recent advances in psychiatric nosology and presents differing views on the meaning of the general severity criterion common to all personality pathology (i.e., level of personality functioning as described in criterion A of the Alternative DSM-5 Model for Personality Disorders). Next, the significance of Kernberg's theory to recent nosological advances is discussed, with a focus on two important features: first, a definition of personality that goes beyond signs and symptoms to include structural motivational components, in the domains of self- and interpersonal functioning, that are common to all personality manifestations and that fulfill an intrapsychic, organizing function; second, identity formation and consolidation as the ultimate end point of healthy personality functioning. That these cornerstone features of Kernberg's theory, articulated more than 50 years ago, align with the most up-to-date conceptualization of personality pathology confirms that Kernberg's theory represents an idea whose time has finally come.