Effectiveness of a dissonance-based eating disorder prevention program for ethnic groups in two randomized controlled trials

Abstract

Objective: As young women from certain ethnic minority groups have reported less pursuit of the thin ideal and body dissatisfaction than European American young women we tested whether a dissonance-based prevention program designed to reduce thin-ideal internalization among women with body dissatisfaction is less effective for the former relative to the later groups. We also tested whether intervention effects are larger when participants from minority groups worked with a facilitator matched versus not matched on ethnicity.

Method: In Study 1, 426 female undergraduates (M age=21.6, SD=5.6) were randomized to clinician-led Body Project groups or an educational control group. In Study 2, 189 female undergraduates were randomized to peer-led Body Project groups or a waitlist control condition.

Results: Although there was some variation in risk factor scores across ethnic groups, ethnic minority participants did not demonstrate consistently higher or lower risk relative to European American participants. Intervention effects did not significantly differ for participants from minority groups versus European American participants in either trial. There was no evidence that effects were significantly larger when minority participants and facilitators were matched on ethnicity.

Conclusions: Results suggest that the Body Project is similarly effective for African American, Asian American, European American, and Hispanic female college students, and when participants and facilitators are matched or not on minority ethnicity status, implying that this prevention program can be broadly disseminated in this population.

Keywords: Body dissatisfaction; Dissonance; Eating disorder; Ethnicity; Prevention.