Methods: 30 adolescents with ASD and their parents participated in a 12-week manualized social skills intervention as part of the UCLA PEERS Program. Parents completed the Vineland Adaptive Behavior Scale, Second Edition (Vineland-II) at pretest and the Social Skills Rating Scale (SSRS) at pre and posttest.
Results: The change in SSRS was examined using three separate multiple regressions. In each case, posttest SSRS scores was the outcome variable, pretest SSRS scores were entered on the first step of the regression, and one of the three Vineland-II scales (Daily Living Skills, Communication, or Socialization) was entered on the second step to determine if pretest levels of adaptive functioning significantly predicted change in SSRS. Levels of adaptive functioning at pretest were not found to significantly predict change in SSRS. However, separate post-hoc analyses examining only posttest SSRS scores and adaptive functioning revealed that both Daily Living Skills (B = 0.45, SEB = 0.20, β = .39, p = .03) and Communication Skills (B = 0.83, SEB = 0.37, β = .39, p = .03) significantly predicted social skills functioning at posttest, but Socialization did not (B = 0.38, SEB = 0.31, β = .22, p = .23).