The brief negative symptom scale: psychometric properties

Brian Kirkpatrick, Gregory P Strauss, Linh Nguyen, Bernard A Fischer, David G Daniel, Angel Cienfuegos, Stephen R Marder, Brian Kirkpatrick, Gregory P Strauss, Linh Nguyen, Bernard A Fischer, David G Daniel, Angel Cienfuegos, Stephen R Marder

Abstract

The participants in the NIMH-MATRICS Consensus Development Conference on Negative Symptoms recommended that an instrument be developed that measured blunted affect, alogia, asociality, anhedonia, and avolition. The Brief Negative Symptom Scale (BNSS) is a 13-item instrument designed for clinical trials and other studies that measures these 5 domains. The interrater, test-retest, and internal consistency of the instrument were strong, with respective intraclass correlation coefficients of 0.93 for the BNSS total score and values of 0.89-0.95 for individual subscales. Comparisons with positive symptoms and other negative symptom instruments supported the discriminant and concurrent validity of the instrument.

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Source: PubMed

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