[Schizophreniform conditions in adolescent drug users differentiation possibilities using objective personality inventories].

The authors report on schizophreniform states in juvenile drug consumers. The following psychodiagnostic instruments have been used in this investigation: a list of complaints, a self-estimation scale, a psychosis-depression-neurosis inventory (v. Zerssen), the Freiburg personality inventory (FPI, Fahrenberg, Selg and Hampel). According to clinical-psychopathological data in the course of psychosis, three groups of patients (N = 21) have been formed and defined as schizophrenia-, borderline-, intoxication-psychosis-groups. The report describes the procedure of two discriminant analyses by which the said three groups have been selected. In addition to methods of a cross section approach, the necessity of longitudinal observations is discussed by means of an own clinical example, considering also observations described in the literature.