ABSTRACT
Dysfunctional, impairing and/or maladaptive thinking, feeling, behaving, and relating are of substantial concern to many different professions, the members of which will hold an equally diverse array of beliefs regarding etiology, pathology, and intervention. It is imperative that these persons be able to communicate meaningfully with one another. The primary purpose of an official diagnostic nomenclature is to provide this common language of communication (Kendell, 1975; Sartorius et al., 1993).
