A new rating scale for negative symptoms: the Motor-Affective-Social Scale

Psychiatry Research
Fabien TrémeauLeslie Citrome

Abstract

The commonly used rating scales for negative symptoms in schizophrenia have shown good reliability, but disagreement persists regarding both the content definition and the validity of several items. Instead, authors have recommended rating the specific behaviors that are defined as negative symptoms. To surmount these shortcomings, we developed a new rating scale for negative symptoms: the Motor-Affective-Social Scale (MASS). During a 5-minute structured interview, hand coverbal gestures, spontaneous smiles, voluntary smiling, and questions asked by the interviewer were counted and rated on 101 inpatients with a diagnosis of schizophrenia or schizoaffective disorder. Information on social behavior was obtained from nursing staff. The scale consisted of a total of eight items. The MASS showed high internal consistency (Cronbach alpha coefficient=0.81), inter-rater reliability, and test-retest reliability (intra-class correlation coefficient=0.81). Convergent validity analyses showed high correlations between MASS scores and scores on the Scale for the Assessment of Negative Symptom (SANS), and the negative symptoms subscale of the Positive and Negative Syndrome Scale (PANSS). The MASS showed excellent psychometric properties, pr...Continue Reading

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Citations

Jul 13, 2013·Psychiatry Research·Jonathan Del-MonteDelphine Capdevielle
Mar 11, 2016·Schizophrenia Research·Tania M LincolnJohn Lyne
May 27, 2008·Schizophrenia Research·Fabien TrémeauDaniel Javitt
Mar 9, 2012·Schizophrenia Research·Fabien TrémeauDaniel C Javitt
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Jul 1, 2019·European Neuropsychopharmacology : the Journal of the European College of Neuropsychopharmacology·Armida MucciSilvana Galderisi

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