Internalization
The LMM with baseline internalization as a covariate, randomized group as a between-subjects factor, study phase (T2 and T3) as a within-subjects factor, three 2-way interactions, and one 3-way interaction found a nonsignificant effect of group (The preplanned ANCOVAs showed a significant effect of randomized group on internalization both at T2 (In line with previous results, the post hoc repeated measures ANOVAs showed no significant effect of time in the control group (Trait internalization over time for both groups. *Significant analysis of covariance effect of the randomized group at a specific time point.