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Neuropsychological correlates of the PANSS Cognitive Factor
T S Ehmann1, I Khanbhai, G W Macewan
1Department of Psychiatry, St. Paul's Hospital, Vancouver, Canada.
Objective:
Factor analytic studies of the Positive and Negative Syndrome Scale (PANSS) have consistently isolated a factor that is frequently labeled as 'cognitive'. The present study sought to further explore the factor by examining the relationships between 4 versions of the cognitive factor and a set of neuropsychological tests.
Method:
Thirty-seven inpatients diagnosed with schizophrenia or schizoaffective disorder were assessed with the PANSS and neuropsychological measures.
Results:
Verbal intelligence and verbal memory were found to be most closely associated with cognitive factor scores. A global rating of illness severity showed greater relationships to cognitive variables than any cognitive factor.
Conclusions:
The PANSS cognitive factor may reflect verbal ability and memory, but is not sufficiently comprehensive to be considered as a replacement for direct assessment of cognitive functioning.
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