Fig. 2.

Expected mean per time point and per condition, as based on the fixed part of the multilevel models of the measurements for parents and teachers. Parents: effect sizes in the figures represent significant changes in the specified condition (by symbol), compared to CAU. Significant effect sizes were only present for the comparison between T1 and T2. Teachers: effect sizes in the figures represent significant changes in the social skills training with parent and teacher involvement, compared to CAU (diamond) or compared to SST (square). Each measure is presented in a separate panel. For parent measures: a Vineland Socialization; b ESTIATS; c SSRS-P Cooperation; d SSRS-P Assertion; e SSRS-P Self-Control; f SSRS-P Responsibility. For teacher measures: g SSRS-T Cooperation; h SSRS-T Assertion; i SSRS-T Self-Control