Question 1: To what extent is COMPASS able to help all children with ASD, regardless of severity or symptom profile? Recall our study design. For both RCTs, our inclusion criteria were that the children had an IEP that was based on their eligibility of having autism. They also needed to have a confirmed diagnosis of autism based on an evaluation conducted by us. Thus, children in both RCTs received a comprehensive assessment that included measures of autism severity, IQ, language, adaptive behavior, and interfering behavior. These baseline evaluations were conducted prior to group assignment. To answer the first question about the impact of child factors on outcomes, we correlated GAS change with all four child characteristics: autism severity, IQ, language, and adaptive skills (see Table 8.1). Bivariately, consistent with other intervention research in ASD, we found that treatment response was greater for students with less severe symptoms, higher IQ, greater language ability, and greater adaptive functioning.