Psychoticism and thought disorder in psychiatric patients.

Schizophrenic patients, whether thought-disordered or not, were found to perform worse than other patients when sorting schematic faces, but not when sorting equivalent abstract material. This information-processing deficit was found to be related to self-rated psychoticism scores as well as to factor scores on the factor of schizophrenia derived from the analysis of psychiatrists' ratings of the patients on a large number of symptoms.