Intervention participants showed significant post-test reductions in only one of the six variables with both Studies 1 and 2 ( i.e. , pressure to be thin and negative affect , respectively ) , though post-test effect sizes suggested medium reductions in eating disorder risk factors and symptoms ( Study 1 : M d = .40 ; Study 2 : M d = .65 ) ; reductions at 3-month follow-up in Study 2 were not evident ( M d = .19 ) .