In the full mediation model, Time 1 peer victimization was no longer a significant predictor of Time 3 aggression, controlling for Time 1 symptoms and Time 1 emotion dysregulation, when Time 2 emotion dysregulation was added to the model, β=−0.02, p=.729 (see Fig. 1). Sobel’s z-test revealed a significant indirect effect of peer victimization on aggression through emotion dysregulation, z=2.27, p=0.023. This model accounted for the covariation between Time 1 aggression, emotion dysregulation, and peer victimization and explained 67.4% of the variance in emotion dysregulation (R2) and 22.1% of the variance in aggressive behavior. This model fit the data well, χ2(162)=521.77, p<0.001, CFI=0.96, and RMSEA=0.04 (90% CI: 0.04–0.05).
