Three syndrome concept of schizophrenia. A factor analytic study

A K Malla; R M Norman; P Williamson; L Cortese; F Diaz

doi:10.1016/0920-9964(93)90049-o

Three syndrome concept of schizophrenia. A factor analytic study

Schizophr Res. 1993 Aug;10(2):143-50. doi: 10.1016/0920-9964(93)90049-o.

Authors

A K Malla¹, R M Norman, P Williamson, L Cortese, F Diaz

Affiliation

¹ Department of Psychiatry, University of Western Ontario, London, Canada.

PMID: 8398946
DOI: 10.1016/0920-9964(93)90049-o

Abstract

One hundred and fifty-five DSM-IIIR schizophrenic patients were assessed for positive and negative symptoms using Andreasen's Scale for Assessment of Positive Symptoms (SAPS) and the Scale for Assessment of Negative Symptoms (SANS). Interrelationships of individual positive and negative symptoms were examined using a factor analysis. Results of the factor analysis are consistent with Liddle's proposition that there are three syndromes underlying symptomatology in schizophrenia: disorganization; psychomotor poverty and reality distortion.

MeSH terms

Adolescent
Adult
Affective Symptoms / diagnosis
Affective Symptoms / psychology
Attention
Delusions / diagnosis
Delusions / psychology
Factor Analysis, Statistical
Female
Humans
Male
Middle Aged
Motor Activity
Perceptual Distortion
Psychiatric Status Rating Scales / statistics & numerical data*
Psychometrics
Reality Testing
Schizophrenia / diagnosis*
Schizophrenia, Disorganized / diagnosis
Schizophrenia, Disorganized / psychology
Schizophrenic Psychology*
Syndrome
Thinking
Verbal Behavior