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Measurement invariance of a body dysmorphic disorder symptom questionnaire across sex: The Body Image Questionnaire - Child and Adolescent Version
Schneider, Sophie C. Baillie, Andrew J. Mond, Jonathan Turner, Cynthia M. Hudson, Jennifer L.
Schneider, Sophie C.
Baillie, Andrew J.
Mond, Jonathan
Turner, Cynthia M.
Hudson, Jennifer L.
Abstract
Measures of body dysmorphic disorder symptoms have received little psychometric evaluation in adolescent samples. This study aimed to examine cross-sex measurement invariance in the Body Image Questionnaire–Child and Adolescent version (BIQ-C) to establish whether observed sex differences in total scores may be meaningful or due to differences in measurement properties. A sample of 3,057 Australian high school students completed the initial screening item of the measure (63.2% male, Mage = 14.58 years, SD = 1.37, range = 12-18 years). Of these participants, 1,512 (49.5%) reported appearance concerns and thus completed the full measure. Partial scalar measurement invariance was established among a revised two-factor, 9-item version of the BIQ-C (BIQ-C-9). Females reported significantly greater latent factor variance, higher BIQ-C-9 total and factor scores, and higher scores on most individual BIQ-C-9 items. The measure can be used with caution to compare body dysmorphic disorder symptoms between male and female adolescents, though sex-specific cutoff scores should be used.
Keywords
body dysmorphic disorder, measurement invariance, sex differences, adolescent, screening
Date
2018
Type
Journal article
Journal
Assessment
Book
Volume
25
Issue
8
Page Range
1026-1035
Article Number
ACU Department
Relation URI
Source URL
Event URL
Open Access Status
License
File Access
Controlled