Effects of a Family-Implemented LEGO Intervention on Social Interactions for Children on the Autism Spectrum in China.

This study evaluated the effects of a LEGO-based intervention, implemented collaboratively by grandparents and parents at home, on social interactions of four children aged 6–7 years on the autism spectrum in China. Using a multiple probe design, caregivers were trained via virtual sessions to apply structured LEGO play strategies that assign roles (Engineer, Builder, Supplier) to promote communication and collaboration. Results showed improvements in the children’s spontaneous social initiations and responses, which were maintained for at least 7 weeks post-intervention and generalized to unstructured free play and family activities. The intervention also reduced inappropriate interactions for most participants, and caregivers reported high acceptability, satisfaction, and feasibility of the approach. The study highlights the potential of virtual caregiver training involving both grandparents and parents to support social skill development in children on the autism spectrum within home settings, particularly in contexts where grandparents are primary caregivers and professional services are limited.