Elsevier

Psychiatry Research

Volume 44, Issue 2, November 1992, Pages 153-165
Psychiatry Research

Empirical assessment of the factorial structure of clinical symptoms in schizophrenia: Negative symptoms

https://doi.org/10.1016/0165-1781(92)90049-9Get rights and content

Abstract

The factor structure of the Scale for the Assessment of Negative Symptoms (SANS) was examined in a confirmatory factor analysis that used the LISREL procedure. Four models of negative symptom factors were tested in 130 hospitalized schizophrenic patients. A three-factor model of diminished expression, social dysfunction, and disorganization generated by the authors yielded a superior fit to the data relative to the two-factor model of Liddle (1987b) and a unifactorial severity model. A four-factor model based on the original subscale formulation of the SANS failed to fit the data.

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    a

    Richard S.E. Keefe, Ph.D., Seth H. Apter, Ph.D., and James Schmeidler, Ph.D., are Assistant Professor; Philip D. Harvey, Ph.D., Department of Psychiatry, Mount Sinai School of Medicine, New York, NY.

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    Philip D. Harvey, Ph.D., and Michael Davidson, M.D., are Associate Professors; Department of Psychiatry, Mount Sinai School of Medicine, New York, NY.

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    Mark F. Lenzenweger, Ph.D., is Assistant Professor, Psychopathology Area, Department of Human Development, Cornell University, Ithaca, NY.

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    Richard C. Mohs Ph.D., is Professor, and Department of Psychiatry, Mount Sinai School of Medicine, New York, NY.

    d

    Kenneth L. Davis, M.D., is Professor and Chairman, Department of Psychiatry, Mount Sinai School of Medicine, New York, NY.

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