The Body Shape Questionnaire Is Not Invariant Across Sex: Evidence From Portuguese-Speaking University Students

Roberto da Silva, Wanderson and Swami, Viren and Neves, Angela N. and Marôco, João and Ochner, Christopher and Campos, Juliana A. D. B. (2019) The Body Shape Questionnaire Is Not Invariant Across Sex: Evidence From Portuguese-Speaking University Students. Perceptual and Motor Skills, 126 (3). pp. 462-476. ISSN 1558-688X

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Official URL: https://doi.org/10.1177/0031512519839537

Abstract

The Body Shape Questionnaire (BSQ) is a widely-used measure of body shape concerns that was originally designed for use with women but has more recently been used with boys and men. The latter use may be problematic, given that no previous study has demonstrated sex invariance for BSQ scores. To determine the extent to which BSQ scores are sex invariant, we asked Portuguese-speaking women (n = 1,613) and men (n = 871) to complete the full BSQ (34-items). Confirmatory factor analysis (CFA) indicated that a hypothesized 32-item model of BSQ scores and shorter versions had acceptable fit indices in women and men, separately. However, multi-group CFA showed that these BSQ model scores had configural but not metric, scalar, or strict sex invariance. Differential item analysis indicated significant item-functioning differences on 19 of the 32 retained BSQ items. Thus, BSQ scores are not sex invariant, making problematic the results of previous studies that have compared latent BSQ scores across sex.

Item Type: Journal Article
Keywords: Latent mean comparisons, Sex differences, Measurement invariance, Confirmatory factor analysis, Portuguese students
Faculty: Faculty of Science & Engineering
Depositing User: Viren Swami
Date Deposited: 04 Mar 2019 16:50
Last Modified: 14 Nov 2019 16:08
URI: http://arro.anglia.ac.uk/id/eprint/704151

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