Validation of the Norwegian version of the Social Functioning Scale (SFS) for schizophrenia and bipolar disorder
Article first published online: 19 JUL 2010
© 2010 The Authors. Scandinavian Journal of Psychology © 2010 The Scandinavian Psychological Associations
Scandinavian Journal of Psychology
Volume 51, Issue 6, pages 525–533, December 2010
How to Cite
HELLVIN, T., SUNDET, K., VASKINN, A., SIMONSEN, C., UELAND, T., ANDREASSEN, O. A. and MELLE, I. (2010), Validation of the Norwegian version of the Social Functioning Scale (SFS) for schizophrenia and bipolar disorder. Scandinavian Journal of Psychology, 51: 525–533. doi: 10.1111/j.1467-9450.2010.00839.x
- Issue published online: 24 NOV 2010
- Article first published online: 19 JUL 2010
- Received 27 January 2010, accepted 3 May 2010
- Social functioning;
- Social Functioning Scale;
- bipolar disorder;
Hellvin, T., Sundet, K.,Vaskinn, A., Simonsen, C.,Ueland, T., Andreassen, O.A. & Melle, I. (2010). Validation of the Norwegian version of the Social Functioning Scale (SFS) for schizophrenia and bipolar disorder. Scandinavian Journal of Psychology 51, 525–533.
Studies of social functioning in severe mental disorders are disadvantaged by the multitude of different assessment instruments in use. The present study aims to establish reliability and validity of the Norwegian version of the Social Functioning Scale (SFS) and to examine social functioning in bipolar disorder (BD) compared to schizophrenia (SZ) and healthy controls (HC). SFS, a 76 item questionnaire divided into seven subscales measuring various aspects of daily life functioning, was administered to samples diagnosed with BD (n = 100) or SZ (n = 100) and to HC (n = 100), recruited from the ongoing Tematic Organized Psychosis (TOP) study. Reliability analyses prove adequate psychometric properties both for the composite full scale score (α: 0.81) as well as for the seven subscale scores (α: 0.60–0.88). Principal component analysis of the subscales confirms a one-component structure, explaining 59% of the variance. Although significantly correlated with the Global Assessment of Functioning, our results indicate that the SFS measures different aspects of social functioning, is less influenced by demographic and clinical characteristics, but differentiates at the same time significantly BD from SZ. Thus, SFS adds valuable information as a supplement to standard clinician-rated assessment tools of social functioning, suited both for research and clinical work.