Psychometric properties of measures of sociocultural influence and internalization of appearance ideals across eight countries.

The aim of the current study was to examine the psychometric properties of two well-established measures of sociocultural influence and internalization of the thin/low body fat ideal and muscular ideal. Data from 6272 emerging adults (68.9 % female), aged 18-30 years from Australia, Belgium, Canada, China, Italy, Japan, Spain, and the U.S. were included in this study. Participants completed measures of pressure from mother, fathers, peers, and media, to both increase muscles and lose weight, as well as internalization of the thin/low body fat ideal and muscular ideal. Overall, support for partial invariance was found across the scales. In addition, group level differences were found between countries as well as along demographic factors including gender, age, body mass index, and socioeconomic status. These findings make an important contribution by identifying these scales as useful tools that will support future cross-country and cross-cultural examinations of explanatory models of the development of body image and eating concerns grounded within sociocultural theories.

Development and testing of a model for risk and protective factors for eating disorders and higher weight among emerging adults: A study protocol.

Research has demonstrated that eating disorders (ED) and higher weight have lifetime co-occurrence suggesting that they may be best considered within a common etiological model. Although we know that body dissatisfaction is likely to be a risk factor for both outcomes, other proposed risk and protective factors for each condition have not been adequately explored. The current paper tests a conceptual model that is based on a review of the existing literature from both areas of scholarship. It considers biological, sociocultural, psychological, and behavioral factors that may contribute to both outcomes. The model will be tested in a longitudinal design with an initial sample of 600 emerging adults (aged 18-30) per country in nine different countries (total sample = 5400 participants). Questionnaires will be completed online on two occasions, 12 months apart. The first full phase of the study commenced in July 2018, the same time Body Image was approached to publish this protocol paper (the final revised paper was submitted in September 2019), and data collection will be finalized in December 2019. Multi-group path analysis will identify the biopsychosocial predictors - both cross-sectionally and longitudinally - of both ED and higher weight, and how these vary across countries and gender.