Abstract

The applicability of the prototype model to the DSM-III personality disorders was examined by attempting to isolate prototype cases (both high interclinician agreement and fast diagnostic reaction time). Twenty clinicians assigned diagnoses to 30 cases selected to represent the 11 personality disorders. Prototype cases were located for seven of the personality disorders. Also examined were differences among the clinicians according to profession (psychology/psychiatry) and level of experience (student/faculty). No difference was found according to profession using reaction time or agreement data, but interprofessional diagnostic differences were noted on individual cases. Experience had a significant effect on diagnostic speed, but not on agreement. A multidimensional scaling solution yielded a circumplex ordering of the personality disorders.

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