Group-based social skills interventions (GSSIs) are widely used for
treating social competence among youth with autism spectrum disorder (ASD), but
their efficacy is unclear. Previous meta-analysis of the literature on
well-designed trials of GSSIs is limited in size and scope, collapsing across
highly heterogeneous sources (parents; youths; teachers; observers; behavioral
tasks). The current meta-analysis of randomized control trials (RCTs) was
conducted to ascertain overall effectiveness of GSSIs and differences by
reporting sources. Nineteen RCTs met inclusion criteria. Results show that
overall positive aggregate effects were medium (g = 0.51,
p < 0.001). Effects were large for self-report
(g = 0.92, p < 0.001), medium for
task-based measures (g = 0.58, p <
0.001), small for parent- and observer-report (g = 0.47 and
0.40, respectively, p < 0.001), and nonsignificant for
teacher-report (p = 0.11). Moderation analyses of self-report
revealed the effect was wholly attributable to youth reporting that they learned
about skilled social behaviors (social knowledge; g = 1.15,
p < 0.01), but not that they enacted them (social
performance; g = 0.28, p = 0.31). Social
skills interventions presently appear modestly effective for youth with ASD, but
may not generalize to school settings or self-reported social behavior.