Journal
CHILD PSYCHIATRY & HUMAN DEVELOPMENT
Volume 51, Issue 3, Pages 453-460Publisher
SPRINGER
DOI: 10.1007/s10578-020-00956-z
Keywords
Functional impairment; Disability; Self-report; Parent-report; Psychometric evaluation
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Funding
- King's College London
- Medical Research Council (MRC) Clinical Research Training Fellowship [MR/N001400/1]
- MRC [MR/N001400/1] Funding Source: UKRI
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The Work and Social Adjustment Scale (WSAS) is a brief global measure of functional impairment that is widely used in adult health. We have adapted the WSAS for its use in youth, the WSAS-Youth version (WSAS-Y) and WSAS-Parent version (WSAS-P). This study evaluated the psychometric properties of the scale. The internal consistency, factor structure, convergent and divergent validity, test-retest reliability and sensitivity to change of the WSAS-Y/P were studied in 525 children and adolescents with obsessive-compulsive disorder and related disorders receiving treatment. The internal consistency of the WSAS-Y/P was excellent across diagnostic groups and time-points. Exploratory factor analysis extracted a single-factor of functional impairment, explaining in excess of 85% of the variance. The test-retest reliability was adequate. The WSAS-Y/P correlated more strongly with other measures of functional impairment than with measures of symptom severity, indicating good convergent/divergent validity. Finally, the WSAS-Y/P was highly sensitive to change after treatment.
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