Happy Being Me in the UK: A controlled evaluation of a school-based body image intervention with pre-adolescent children

► We evaluated a school-based body image intervention for pre-adolescent children. ► We examined changes in body image at post-intervention and 3-month follow-up. ► Post-intervention measures revealed some positive outcomes for girls and boys. ► 3-month follow-up revealed that many outcome effects were not maintained. ► Mixed gender, pre-adolescent school-based body image interventions have potential. This study evaluated an adapted version of ‘Happy Being Me’, a school-based body image intervention, with girls and boys aged 10–11 years. Forty-three children participated in a three-week intervention, and 45 children formed a control group. Both groups completed measures of body satisfaction, risk factors for negative body image, eating behaviors, self-esteem, and intervention topic knowledge, at baseline, post-intervention, and 3-month follow-up. For girls, participation in the intervention resulted in significant improvements in body satisfaction, appearance-related conversations, appearance comparisons, eating behaviors and intervention topic knowledge at post-intervention, although only the change in body satisfaction was maintained. There was also a significant decrease in internalization of cultural appearance ideals from baseline to follow-up. For boys, participation in the intervention resulted in significant improvements in internalization and appearance comparisons at post-intervention; however, neither of these changes were sustained at follow-up. There were no improvements in the control group over time.