Please use this identifier to cite or link to this item: https://observatorio.fm.usp.br/handle/OPI/29557
Title: The Brief Negative Symptom Scale: Validation in a multicenter Brazilian study
Authors: MEDEIROS, Heydrich Lopes Virgulino deVASCONCELOS, Selene CordeiroELKIS, HelioMARTINS, Diana RochaLEITE, Raissa Miranda de AlexandriaALBUQUERQUE, Ana Carla Leite deFREITAS, Rosana RamosSCARDOELLI, Maria AliceSARNO, Elaine DiNAPOLITANO, IsabelOLIVEIRA, Graca MariaVIZZOTTO, AdrianaSILVA, Antonio Medeiros Peregrino daLIMA, Murilo Duarte da Costa
Citation: COMPREHENSIVE PSYCHIATRY, v.85, p.42-47, 2018
Abstract: Background: Negative symptoms are a core feature of schizophrenia. The Brief Negative Symptom Scale (BNSS) is a scale developed to measure negative symptoms in schizophrenia. Methods: The present study aimed to examine the construct validity of BNSS, by using convergent and divergent validities as well as factor analysis, in a Brazilian sample of 111 outpatients diagnosed with schizophrenia by DSM-5. Patients were evaluated by the Brazilian version of the BNSS and positive and negative subscales of the Positive and Negative Syndrome Scale (PANSS). Results: Assessment of patients by both instruments revealed an excellent internal consistency (Cronbach's alpha = 0.938) or inter-rater reliability (ICC = 0.92), as well as a strong correlation between BNSS and Marder negative PANSS (r = 0.866) and a weak correlation of the instrument with the positive PANSS (r = 0.292), thus characterizing convergent and discriminant validities, respectively. The exploratory factor analysis identified two distinct factors, namely, motivation/pleasure and emotional expressivity, accounting for 68.63% of the total variance. Conclusion: The study shows that the Brazilian version of the BNSS has adequate psychometric properties and is a reliable instrument for the assessment of negative symptoms in schizophrenia, either for clinical practice or research.
Appears in Collections:Artigos e Materiais de Revistas Científicas - FM/MPS
Artigos e Materiais de Revistas Científicas - HC/IPq

Files in This Item:
File Description SizeFormat 
art_MEDEIROS_The_Brief_Negative_Symptom_Scale_Validation_in_a_2018.PDF
  Restricted Access
publishedVersion (English)201.5 kBAdobe PDFView/Open Request a copy

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.