2.3.4. Social Behavior

Social Responsiveness Scale, Second Edition (SRS-2) [18]. The SRS-2 measures challenges with social interactions and communication. There are five subscales of the SRS-2 including Social Awareness, Social Cognition, Social Communication, Social Motivation, and Restricted Interests/Repetitive Behavior that produce a total score. The current study used parent report on the School-Age Form (ages 4–18). Parents were asked to rate their child's behavior over the last six months. Internal consistency correlations for the SRS-2 are high in the publisher's norming sample, which includes children with and without ASD (α = 0.95–0.97) [18]. Similarly, high internal consistency has also been reported in smaller samples of children with DS (α = 0.94–0.96) [19]. SRS-2 T-scores have a mean of 50 and a standard deviation of 10. Because both raw scores and T-scores had comparable results and there were no problems with score distributions identified, T-scores were used for all analyses.
