It is encouraging that children with autism show a strong response to
early intervention, yet more research is needed for understanding the
variability in responsiveness to specialized programs. Treatment predictor
variables from 47 teachers and children who were randomized to receive the
COMPASS intervention (Ruble et al. in The collaborative model for promoting
competence and success for students with ASD. Springer, New York, 2012a) were
analyzed. Predictors evaluated against child IEP goal attainment included child,
teacher, intervention practice, and implementation practice variables based on
an implementation science framework (Dunst and Trivette in J Soc Sci
8:143–148, 2012). Findings revealed one child (engagement), one teacher
(exhaustion), two intervention quality (IEP quality for targeted and not
targeted elements), and no implementation quality variables accounted for
variance in child outcomes when analyzed separately. When the four significant
variables were compared against each other in a single regression analysis, IEP
quality accounted for one quarter of the variance in child outcomes.