Measurement of negative symptoms in schizophrenia

J. De Leon, William Wilson, G. M. Simpson

Research output: Contribution to journalReview article

30 Scopus citations

Abstract

This article focuses on the measurement of 'negative symptoms'. Standardized scales used to rate negative symptoms are reviewed and compared, as are the individual items which comprise them. The overlap of negative symptoms, akinesia, and depression is explored, and means are suggested to improve the precision of defining and measuring negative symptoms. Flat affect is the only item present in all negative symptom scales and may overlap with depression and akinesia. Inappropriate affect and attentional disturbance should not be considered negative symptoms. Poverty of speech and anhedonia lack unified definitions, and in some scales, they can also be confounded with depression and akinesia. The psychometric properties of most scales have not been sufficiently studied. The lack of long-term studies of stability of the supposedly enduring negative symptoms is especially worrisome. Carpenter's deficit syndrome consisting of non-secondary negative symptoms lasting more than one year is a promising new step to try and address some of these problems.

Original languageEnglish (US)
Pages (from-to)211-234
Number of pages24
JournalPsychiatric Developments
Volume7
Issue number3
Publication statusPublished - Dec 1 1989
Externally publishedYes

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ASJC Scopus subject areas

  • Psychiatry and Mental health

Cite this

De Leon, J., Wilson, W., & Simpson, G. M. (1989). Measurement of negative symptoms in schizophrenia. Psychiatric Developments, 7(3), 211-234.