Simulating normal MMPI profiles as a favourable prognostic sign in schizophrenia

Abstract

An attempt was made to assess the validity of simulating normal MMPI profiles as a prognostic sign in schizophrenia. A reliable and valid system was used to establish the criterion diagnosis of schizophrenia through the use of a standardized structured interview and a diagnostic system based on the use of discriminant function analysis with non-pathognomonic symptom combination. Outcome criteria used included a variety of measures of schizophrenic thought disorder. The results indicated that the ability to simulate a normal MMPI profile upon request is a favourable prognostic sign. Weaknesses of the study are discussed.