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Positive Mental Well-Being.

Stephen Houghton1,2, Lisa Wood1, Ida Marais1

  • 11 The University of Western Australia, Perth, Western Australia, Australia.

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|October 17, 2015
PubMed
Summary
This summary is machine-generated.

A new 10-item scale, derived using Rasch analysis, offers a reliable tool for screening positive mental well-being in the general population. This validated short form ensures accurate comparisons across diverse demographic groups.

Keywords:
RaschWarwick-Edinburgh Mental Well-Being Scalepositive mental well-being

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Area of Science:

  • Psychometrics
  • Mental Health Research
  • Population Health

Background:

  • The Warwick-Edinburgh Mental Well-Being Scale (WEMWBS) is a widely used measure of positive mental well-being.
  • Existing scales may require adaptation for efficient screening in large general populations.
  • Rasch analysis provides a robust framework for developing and validating measurement instruments.

Purpose of the Study:

  • To develop and validate a short form of the Warwick-Edinburgh Mental Well-Being Scale (WEMWBS) using Rasch methodology.
  • To create a reliable screening tool for positive mental well-being suitable for the general population.
  • To ensure the psychometric properties of the scale allow for valid comparisons across demographic groups.

Main Methods:

  • Rasch analysis was applied to data from 2,005 adults aged 18-69.
  • Item response theory (IRT) principles were used to evaluate scale performance and identify suitable items.
  • Differential item functioning (DIF) analysis was conducted to assess measurement invariance.

Main Results:

  • A 10-item short form of the WEMWBS was developed after removing 4 items that did not fit the Rasch model.
  • The final 10-item scale demonstrated good model fit and reliability (Cronbach's alpha, Rasch Person Separation Index).
  • No differential item functioning was found, supporting valid comparisons of mental well-being across age, gender, and income groups.

Conclusions:

  • The 10-item Rasch-derived WEMWBS is a psychometrically sound and reliable instrument for screening positive mental well-being.
  • This short form facilitates efficient and accurate assessment in general population research and clinical settings.
  • The development challenges traditional approaches to assessing positive mental well-being, advocating for refined measurement strategies.