Validation of the Dutch Version of the Brief Negative Symptom Scale
Received 8 July 2020
Accepted for publication 19 September 2020
Published 29 October 2020 Volume 2020:16 Pages 2563—2567
Checked for plagiarism Yes
Review by Single anonymous peer review
Peer reviewer comments 2
Editor who approved publication: Dr Roger Pinder
Birgit L Seelen-de Lang,1 Christien E Boumans,2 Henk LI Nijman3
1Flexible Assertive Community Treatment-Team, GGZ Oost Brabant, Boekel, the Netherlands; 2Long-Term Clinical Care, GGZ Oost Brabant, Boekel, the Netherlands; 3Behavioural Science Institute, Radboud University, Nijmegen, the Netherlands
Correspondence: Birgit L Seelen-de Lang
GGZ Oost Brabant, PO Box 3, Boekel 5427 ZG, the Netherlands
Tel +31 6 52612286
Purpose: The Brief Negative Symptom Scale (BNSS) was developed to measure negative symptoms of schizophrenia. However, the Dutch translation of this instrument, called the “Korte Schaal voor Negatieve Symptomen” (KSNS), has not yet been validated. This study investigates the validity and reliability of this Dutch version of the instrument.
Patients and Methods: The Psychotic Symptom Rating Scale (PSYRATS), Calgary Depression Scale for Schizophrenia (CDSS), the Health of the Nation Scale (HoNOS) and the KSNS were used for routine outcome monitoring to measure symptoms in 28 patients with a psychotic disorder who were being treated on a long-stay ward.
Results: The internal consistency of the KSNS is fair to good. The inter-rater reliability is excellent. The concurrent validity is moderate but acceptable. The correlations between the KSNS and scales for depression and positive symptoms were not significant, which indicate good divergent validity.
Conclusion: Despite the small sample size of the current study, we conclude that the BNSS, called the KSNS in Dutch, appears to be a reliable and valid tool for investigating negative symptoms in detail in patients with psychotic disorders.
Keywords: BNSS, Dutch translation, negative symptoms, schizophrenia, validation
This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.Download Article [PDF] View Full Text [HTML][Machine readable]