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The brief negative symptom scale: validation of the German translation and convergent validity with self-rated anhedonia and observer-rated apathy.
BMC Psychiatry 2016; 16(1):415BP

Abstract

BACKGROUND

Negative symptoms are considered core symptoms of schizophrenia. The Brief Negative Symptom Scale (BNSS) was developed to measure this symptomatic dimension according to a current consensus definition. The present study examined the psychometric properties of the German version of the BNSS. To expand former findings on convergent validity, we employed the Temporal Experience Pleasure Scale (TEPS), a hedonic self-report that distinguishes between consummatory and anticipatory pleasure. Additionally, we addressed convergent validity with observer-rated assessment of apathy with the Apathy Evaluation Scale (AES), which was completed by the patient's primary nurse.

METHODS

Data were collected from 75 in- and outpatients from the Psychiatric Hospital, University Zurich diagnosed with either schizophrenia or schizoaffective disorder. We assessed convergent and discriminant validity, internal consistency and inter-rater reliability.

RESULTS

We largely replicated the findings of the original version showing good psychometric properties of the BNSS. In addition, the primary nurses evaluation correlated moderately with interview-based clinician rating. BNSS anhedonia items showed good convergent validity with the TEPS.

CONCLUSIONS

Overall, the German BNSS shows good psychometric properties comparable to the original English version. Convergent validity extends beyond interview-based assessments of negative symptoms to self-rated anhedonia and observer-rated apathy.

Authors+Show Affiliations

Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Lenggstrasse 31, 8032, Zurich, Switzerland. martinbischof@gmail.com.Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Lenggstrasse 31, 8032, Zurich, Switzerland.Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Lenggstrasse 31, 8032, Zurich, Switzerland. Laboratory for Social and Neural Systems Research, Department of Economics, University of Zurich, Bluemlisalpstrasse 10, 8006, Zurich, Switzerland.Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Lenggstrasse 31, 8032, Zurich, Switzerland. Laboratory for Social and Neural Systems Research, Department of Economics, University of Zurich, Bluemlisalpstrasse 10, 8006, Zurich, Switzerland.Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Lenggstrasse 31, 8032, Zurich, Switzerland.Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Lenggstrasse 31, 8032, Zurich, Switzerland.Department of Psychology, State University of New York at Binghamton, Binghamton, NY, 13902-6000, USA.Laboratory for Social and Neural Systems Research, Department of Economics, University of Zurich, Bluemlisalpstrasse 10, 8006, Zurich, Switzerland.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27876020

Citation

Bischof, Martin, et al. "The Brief Negative Symptom Scale: Validation of the German Translation and Convergent Validity With Self-rated Anhedonia and Observer-rated Apathy." BMC Psychiatry, vol. 16, no. 1, 2016, p. 415.
Bischof M, Obermann C, Hartmann MN, et al. The brief negative symptom scale: validation of the German translation and convergent validity with self-rated anhedonia and observer-rated apathy. BMC Psychiatry. 2016;16(1):415.
Bischof, M., Obermann, C., Hartmann, M. N., Hager, O. M., Kirschner, M., Kluge, A., ... Kaiser, S. (2016). The brief negative symptom scale: validation of the German translation and convergent validity with self-rated anhedonia and observer-rated apathy. BMC Psychiatry, 16(1), p. 415.
Bischof M, et al. The Brief Negative Symptom Scale: Validation of the German Translation and Convergent Validity With Self-rated Anhedonia and Observer-rated Apathy. BMC Psychiatry. 2016 Nov 22;16(1):415. PubMed PMID: 27876020.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The brief negative symptom scale: validation of the German translation and convergent validity with self-rated anhedonia and observer-rated apathy. AU - Bischof,Martin, AU - Obermann,Caitriona, AU - Hartmann,Matthias N, AU - Hager,Oliver M, AU - Kirschner,Matthias, AU - Kluge,Agne, AU - Strauss,Gregory P, AU - Kaiser,Stefan, Y1 - 2016/11/22/ PY - 2016/05/19/received PY - 2016/11/07/accepted PY - 2016/11/24/entrez PY - 2016/11/24/pubmed PY - 2017/6/7/medline KW - Assessment KW - Negative symptoms KW - Rating scale KW - Schizophrenia SP - 415 EP - 415 JF - BMC psychiatry JO - BMC Psychiatry VL - 16 IS - 1 N2 - BACKGROUND: Negative symptoms are considered core symptoms of schizophrenia. The Brief Negative Symptom Scale (BNSS) was developed to measure this symptomatic dimension according to a current consensus definition. The present study examined the psychometric properties of the German version of the BNSS. To expand former findings on convergent validity, we employed the Temporal Experience Pleasure Scale (TEPS), a hedonic self-report that distinguishes between consummatory and anticipatory pleasure. Additionally, we addressed convergent validity with observer-rated assessment of apathy with the Apathy Evaluation Scale (AES), which was completed by the patient's primary nurse. METHODS: Data were collected from 75 in- and outpatients from the Psychiatric Hospital, University Zurich diagnosed with either schizophrenia or schizoaffective disorder. We assessed convergent and discriminant validity, internal consistency and inter-rater reliability. RESULTS: We largely replicated the findings of the original version showing good psychometric properties of the BNSS. In addition, the primary nurses evaluation correlated moderately with interview-based clinician rating. BNSS anhedonia items showed good convergent validity with the TEPS. CONCLUSIONS: Overall, the German BNSS shows good psychometric properties comparable to the original English version. Convergent validity extends beyond interview-based assessments of negative symptoms to self-rated anhedonia and observer-rated apathy. SN - 1471-244X UR - https://www.unboundmedicine.com/medline/citation/27876020/The_brief_negative_symptom_scale:_validation_of_the_German_translation_and_convergent_validity_with_self_rated_anhedonia_and_observer_rated_apathy_ L2 - https://bmcpsychiatry.biomedcentral.com/articles/10.1186/s12888-016-1118-9 DB - PRIME DP - Unbound Medicine ER -