A Naturalistic Behavioral Intervention to Increase Interaction between Siblings with and without Autism

Area of Science:

• Developmental Psychology
• Clinical Psychology
• Behavioral Science

Background:

• Sibling involvement in autism spectrum disorder (ASD) interventions shows promise.
• Previous research often excluded siblings or focused on mild ASD cases.
• Outcomes for typically developing siblings in ASD interventions require further investigation.

Purpose of the Study:

• To replicate and extend an intervention package for children with ASD and their siblings.
• To examine the effects of structured, interest-based play on social interaction.
• To assess outcomes for both the child with ASD and the typically developing sibling.

Main Methods:

• A reversal design was employed across two sibling dyads.
• Intervention included structured play, adult instruction, and responsive interaction.
• Social interaction behaviors were measured for both siblings.

Main Results:

• Social interaction significantly increased for children with ASD and their typically developing siblings.
• Behavioral generalization was observed in one sibling dyad.
• High social validity was reported across multiple measures.

Conclusions:

• Interventions incorporating typically developing siblings can enhance social interaction in children with ASD.
• The intervention package is effective and socially valid for sibling dyads.
• Findings support the inclusion of siblings in ASD interventions and suggest future research directions.