The modified weight bias internalization scale: psychometric validation of three versions in a sample of university students

Jenkins, P. ORCID: https://orcid.org/0000-0003-1673-2903 and Baysen, L. (2025) The modified weight bias internalization scale: psychometric validation of three versions in a sample of university students. Eating and Weight Disorders-Studies on Anorexia Bulimia and Obesity, 30. 28. ISSN 1124-4909 doi: 10.1007/s40519-025-01741-4 (In Press)

Abstract/Summary

Purpose: The Modified Weight Bias Internalization Scale (WBIS-M) is perhaps the most frequently used measure of internalised weight bias and has growing support for its psychometric properties. However, there is a lack of clarity regarding how many items are necessary for adequate interpretation of the WBIS-M and limited study of internalised weight bias in young adults. The aims of this study are to evaluate different versions of the WBIS-M, assessing structural and convergent validity. Methods: The current study recruited 205 university students (aged 18–46, mean body mass index = 22.60kg/m2) in the UK and examined the factor structure, reliability, and convergent validity of the WBIS-M, looking at 11-item, 10-item, and 9-item versions. Results: Confirmatory factor analysis suggested that a 10-item version of the WBIS-M showed acceptable structural validity and expected correlations with relevant constructs (depression, anxiety, weight status, and eating pathology). Estimates of internal consistency reliability were high for all three versions. Conclusion: Given potential problems with one item, the 10-item WBIS-M presents a measure of internalised weight bias with sound psychometric properties in young adults.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/122025
Identification Number/DOI	10.1007/s40519-025-01741-4
Refereed	Yes
Divisions	Life Sciences > School of Psychology and Clinical Language Sciences > Department of Psychology
Publisher	Springer
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