Factor structure of the Social Phobia Scale (SPS) and the Social Interaction Anxiety Scale (SIAS) in a clinical sample recruited from the community.
Bifactor model
Factor analysis
Social anxiety
Social interaction anxiety scale
Social phobia scale
Journal
BMC psychiatry
ISSN: 1471-244X
Titre abrégé: BMC Psychiatry
Pays: England
ID NLM: 100968559
Informations de publication
Date de publication:
04 09 2023
04 09 2023
Historique:
received:
01
03
2023
accepted:
26
08
2023
medline:
6
9
2023
pubmed:
5
9
2023
entrez:
4
9
2023
Statut:
epublish
Résumé
The Social Phobia Scale (SPS) and the Social Interaction Anxiety Scale (SIAS) are widely used self-report questionnaires to assess symptoms of social anxiety. While SPS measures social performance anxiety, SIAS measures social interaction anxiety. They are mostly reported simultaneously, but there have not been consistent results of the joint factor structure and therefore no consistent recommendations on how to use and evaluate the questionnaires. This study aimed (1) to evaluate the underlying joint factor structure of the SPS and SIAS and (2) to test whether SPS and SIAS are reliable scales to assess two different aspects of social anxiety. The one-factor, two-factor, and bifactor models were tested in a clinical sample recruited from the community and diagnosed with a social anxiety disorder. Exploratory and confirmatory factor analyses were conducted, bifactor-specific indices were calculated, and the content of the less fitting items was examined. Confirmatory factor analyses showed that the best-fitting model was the bifactor model with a reduced set of items. The bifactor-specific indices showed that the factor structure cannot be considered unidimensional and that SPS and SIAS are reliable subscales. A closer examination of the less fitting item content and implications for future studies are discussed. In conclusion, SPS and SIAS can be reported together as an overall score of social anxiety and are separately reliable measures to assess different aspects of social anxiety. This is a secondary analysis of data from two trials registered under ISRCTN75894275 and ISRCTN10627379.
Sections du résumé
BACKGROUND
The Social Phobia Scale (SPS) and the Social Interaction Anxiety Scale (SIAS) are widely used self-report questionnaires to assess symptoms of social anxiety. While SPS measures social performance anxiety, SIAS measures social interaction anxiety. They are mostly reported simultaneously, but there have not been consistent results of the joint factor structure and therefore no consistent recommendations on how to use and evaluate the questionnaires. This study aimed (1) to evaluate the underlying joint factor structure of the SPS and SIAS and (2) to test whether SPS and SIAS are reliable scales to assess two different aspects of social anxiety.
METHODS
The one-factor, two-factor, and bifactor models were tested in a clinical sample recruited from the community and diagnosed with a social anxiety disorder. Exploratory and confirmatory factor analyses were conducted, bifactor-specific indices were calculated, and the content of the less fitting items was examined.
RESULTS
Confirmatory factor analyses showed that the best-fitting model was the bifactor model with a reduced set of items. The bifactor-specific indices showed that the factor structure cannot be considered unidimensional and that SPS and SIAS are reliable subscales. A closer examination of the less fitting item content and implications for future studies are discussed.
CONCLUSIONS
In conclusion, SPS and SIAS can be reported together as an overall score of social anxiety and are separately reliable measures to assess different aspects of social anxiety.
TRIAL REGISTRATION
This is a secondary analysis of data from two trials registered under ISRCTN75894275 and ISRCTN10627379.
Identifiants
pubmed: 37667274
doi: 10.1186/s12888-023-05142-8
pii: 10.1186/s12888-023-05142-8
pmc: PMC10478387
doi:
Banques de données
ISRCTN
['ISRCTN75894275', 'ISRCTN10627379']
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
646Informations de copyright
© 2023. BioMed Central Ltd., part of Springer Nature.
Références
Psychol Assess. 2006 Jun;18(2):231-7
pubmed: 16768601
Behav Ther. 2007 Jun;38(2):192-206
pubmed: 17499085
J Clin Psychol. 2009 Oct;65(10):1021-35
pubmed: 19437505
Psychol Methods. 2016 Jun;21(2):137-50
pubmed: 26523435
J Pers Assess. 2013;95(2):129-40
pubmed: 23030794
Front Psychol. 2017 Feb 02;8:70
pubmed: 28210232
J Anxiety Disord. 2011 May;25(4):579-83
pubmed: 21353456
Behav Res Ther. 1998 Apr;36(4):443-53
pubmed: 9670604
Depress Anxiety. 2009;26(2):E71-81
pubmed: 19152346
Psychiatry Res. 2019 Mar;273:725-731
pubmed: 31207859
Behav Res Ther. 1998 Apr;36(4):455-70
pubmed: 9670605
J Consult Clin Psychol. 2018 Jun;86(6):493-504
pubmed: 29781648
J Anxiety Disord. 2014 Oct;28(7):633-43
pubmed: 25124500
J Anxiety Disord. 2010 Aug;24(6):596-605
pubmed: 20444573
Behav Res Ther. 2016 Sep;84:14-26
pubmed: 27423374
Behav Res Ther. 2011 Mar;49(3):158-69
pubmed: 21255767
J Affect Disord. 2012 Jan;136(1-2):90-98
pubmed: 21903277