Prosocial behaviors of children with autism spectrum disorder (ASD) during interactions with their typically developing siblings

This observational study focuses on prosocial behaviors of children with autism spectrum disorder (ASD) during an interaction with their older, typically developing sibling (TD-Sibs). Twenty-eight sibling dyads, in which the younger sibling was diagnosed with ASD (ASD-Sibs), were video-recorded at home playing a game of their choice. Video recordings were microanalyzed, measuring frame-by-frame observational indices of prosocial behaviors. Siblings’ interactions were mostly collaborative. During the interaction, the older TD-Sibs initiated more actions and the younger ASD-Sibs imitated more. The frequency of the prosocial behaviors of the ASD-Sib was associated with the frequency of the TD-Sib’s prosocial behaviors. The findings emphasize the importance of sibling interactions as an opportunity for children with ASD to practice prosocial behaviors.