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Development and initial psychometric properties of the Warwick-Edinburgh Mental Wellbeing Scale-Intellectual
K Scior1, M Patel1, A Goldsmith-Sumner1
1Research Department of Clinical, Educational and Health Psychology, University College London, London, UK.
Summary
The Warwick-Edinburgh Mental Wellbeing Scale (WEMWBS) was adapted for individuals with intellectual disabilities (ID). The adapted WEMWBS-ID and its short version show promising psychometric properties for virtual administration.
Area of Science:
- Psychology
- Psychometrics
- Intellectual Disability Research
Background:
- The Warwick-Edinburgh Mental Wellbeing Scale (WEMWBS) lacks validation in intellectual disability (ID) populations.
- Adaptation of WEMWBS is needed to assess mental wellbeing in individuals with mild to moderate IDs.
Purpose of the Study:
- To develop and validate adapted versions of the WEMWBS and its short form (SWEMWBS) for individuals with mild to moderate intellectual disabilities (ID).
- To assess the psychometric properties of the WEMWBS-ID and SWEMWBS-ID, including reliability and validity.
Main Methods:
- Revised WEMWBS items and response options with expert input and added visual aids.
- Administered adapted scales virtually to individuals aged 16+ with mild to moderate IDs.
- Evaluated internal consistency, test-retest reliability, and convergent validity with Rosenberg Self-Esteem Scale.
Main Results:
- WEMWBS-ID demonstrated good internal consistency (ω = 0.77–0.87) and excellent test-retest reliability (ICC = .88).
- SWEMWBS-ID showed moderate reliability (ICC = .67) and variable internal consistency (ω = 0.36–0.74).
- Both versions exhibited good convergent validity with self-esteem measures (r = .48–.60).
Conclusions:
- The WEMWBS-ID and SWEMWBS-ID show promising psychometric properties for virtual administration.
- Further research with larger, representative samples is recommended to confirm findings.
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