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

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posted on 2023-08-30, 16:05 authored by Wanderson Roberto da Silva, Viren Swami, Angela N. Neves, João Marôco, Christopher Ochner, Juliana A. D. B. Campos
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.

History

Refereed

  • Yes

Volume

126

Issue number

3

Page range

462-476

Publication title

Perceptual and Motor Skills

ISSN

1558-688X

Publisher

SAGE

File version

  • Accepted version

Language

  • eng

Legacy posted date

2019-03-04

Legacy creation date

2019-03-01

Legacy Faculty/School/Department

Faculty of Science & Engineering

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