Positive Mental Well-Being: A Validation of a Rasch-Derived Version of the Warwick-Edinburgh Mental Well-Being Scale

Stephen Houghton, Lisa Wood, Ida Marais, Michael Rosenberg, Renee Ferguson, Simone Pettigrew

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)
775 Downloads (Pure)

Abstract

This study presents a Rasch-derived short form of the Warwick-Edinburgh Mental Well-Being Scale for use as a screening tool in the general population. Data from 2,005 18- to 69-year-olds revealed problematic discrimination at specific thresholds. Estimation of model fit also deviated from Rasch model expectations. Following deletion of 4 items, the 10 remaining items indicated the data fitted the model. No items showed differential item functioning, thereby making comparisons of overall positive mental well-being for the different age, gender, and income groups valid and accurate. Cronbach’s alpha and Rasch Person Separation Index indicated a strong degree of reliability. Overall, the 10-item scale challenges researchers and clinicians to reconsider the assessment of positive mental well-being.
Original languageEnglish
Pages (from-to)371-386
Number of pages16
JournalAssessment
Volume24
Issue number3
DOIs
Publication statusPublished - 2015

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