Effectiveness trial of a selective dissonance-based eating disorder prevention program with female college students: Effects at 2- and 3-year follow-up

This novel multisite effectiveness trial found that the enhanced dissonance intervention and improved training and supervision procedures produced an average effect size at 3-year follow-up that was 290% and 160% larger than effects observed in the high school effectiveness trial and efficacy trial respectively. Yet, the lack of eating disorder onset effects may imply that factors beyond pursuit of the thin ideal now contribute to eating disorder onset.