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Psychometric properties of the German version of the Self-Image Scale (SIS-D)

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Brederecke, J, Scott, JL ORCID: 0000-0002-6955-4015, de Zwaan, M, Brahler, E, Neuner, F, Quinn, M ORCID: 0000-0001-8858-6242 and Zimmermann, T 2020 , 'Psychometric properties of the German version of the Self-Image Scale (SIS-D)' , PLoS One, vol. 15, no. 3 , doi: 10.1371/journal.pone.0230331.

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Abstract

Background:The Self-Image Scale is a self-report measure originally developed for use in women with cancer. Two subscales assess appearance satisfaction (self-acceptance) and perceptions of partners’ acceptance of their appearance (partner-acceptance). This study aimed to increase the Self-Image Scale’s utility by 1) confirming the two-factor structure of the German version of the Self-Image Scale, 2) testing measurement invariance across sex and age groups and validity, and 3) gathering general population normative data.Methods:Confirmatory factor analysis methods were used to examine the proposed two-factor model in a random sample of adults from the general German population (N = 1367). Measurement invariance, scale reliability, and validity were assessed.Results:The original factor structure and measurement invariance across sexes and age groups were supported. Women showed significantly lower self-acceptance than men. Adolescent and young adult women showed higher self-acceptance than senior women. For both sexes, partner-acceptance lowered across successive age cohorts. Internal consistencies were good.Conclusions:Results support the use of the German version of the Self-Image Scale in research and clinical practice. Research directions include validation in further diseases, collecting normative data across countries, and dyadic research, particularly exploring partner-acceptance across the life span.

Item Type: Article
Authors/Creators:Brederecke, J and Scott, JL and de Zwaan, M and Brahler, E and Neuner, F and Quinn, M and Zimmermann, T
Keywords: body image, psychometrics, dyadic
Journal or Publication Title: PLoS One
Publisher: Public Library of Science
ISSN: 1932-6203
DOI / ID Number: 10.1371/journal.pone.0230331
Copyright Information:

Copyright 2020 Brederecke et al.Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/

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