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Psychiatry Res. 1994 May;52(2):173-9.

Factor structure of the negative symptom assessment.

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  • 1Department of Veterans Affairs Medical Center, Allen Park, MI 48101.


The factor structure of the Negative Symptom Assessment (NSA), a standardized negative symptoms rating scale, was systematically evaluated in a group of 223 inpatients with schizophrenia. Confirmatory factor analyses found that a six-factor model best described the NSA. More specifically, the domains of Communication, Emotion/Affect, Social Involvement, Motivation, Gross Cognition, and Retardation characterized the rating scale. This latent structure of the NSA is consistent with a multidimensional conceptualization of negative symptoms.

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