Psychopharmacology and the Classification of Functional Psychoses

By Thomas A. Ban and Bertalan Petho

Classification and Clinical Psychopharmacology 

The practical need for developing a new system of classifying functional psychoses is closely linked to psychopharmacologic progress. It was in response to this need that the two most extensively employed diagnostic systems, the ICD-9 and the DSM-III, were introduced for general use. In addition, several research diagnostic criteria were developed. One of them, the Diagnostic Criteria of Research (DCR) served as the starting point for the development of the proposed classification of functional psychoses.