Parent-Coached Sibling-Mediated Intervention for Social Communication in Children with Autism Spectrum Disorder: A Pilot Single-Case Study

This pilot study examined the effects of parent-delivered training and coaching in the Speak, Play and Listen intervention, implemented with neurotypical (NT) siblings to support the social communication development of children with autism spectrum disorder (ASD). Three families, each consisting of a parent, an NT child, and a child with ASD aged 5–12 years, participated in the study. A single-case multiple-probe design was employed to evaluate changes in sibling social interactions. Results showed increases in positive social communication behaviors across all three sibling dyads. Semi-structured interviews indicated that family members perceived the intervention goals, procedures, and outcomes as acceptable, feasible, and socially meaningful. The study highlights the importance of considering family-wide participation, implementation fidelity, and family capacity when designing and delivering interventions for children with ASD.