Cross-Country Measurement Invariance and Effects of Sociodemographic Factors on Body Weight and Shape Concern-Related Constructs in Eight Countries.

The aim of this study was to examine the cross-country invariance of five well-established measures of body weight and shape concern-related attitudes and behaviors (i.e., drive for leanness, drive for muscularity, strategies to increase muscle, strategies to lose weight, and weight and shape concerns). A secondary objective was to examine the effects of several sociodemographic factors (age, BMI, socioeconomic status, and gender) on item and latent factor scores of these constructs. A total of 6272 emerging adults (4218 women; M = 21.46, SD = 3.11) from Australia, Belgium, Canada, China, Italy, Japan, Spain, and the U.S. completed a self-report online survey as part of a larger study. Overall, support for partial invariance both across countries and in terms of the considered sociodemographic factors was found for reduced versions of the five measures. Significant differences in latent means were found across countries, these being of greater magnitude for drive for leanness and strategies to lose weight. The considered sociodemographic factors (most notably BMI and gender) were associated with the latent mean scores of the assessed constructs. The present study contributes to current literature by providing cross-cultural invariant versions of several measures of relevance in the field of body image.