The lay summary of this published systematic review is an excellent introduction to this paper. This peer reviewed published article is a good resource to share when evidencing the effectiveness of ASI for children with Autism.
“Ayres Sensory Integration intervention is one of the most frequently requested and highly utilized interventions in autism. This intervention has specific requirements for therapist qualifications and the process of therapy. This systematic review of studies providing Ayres Sensory Integration therapy to children with autism indicates that it is an evidence‐based practice according to the criteria of the Council for Exceptional Children.”
Stevenson and Carolinas have provided a critique of the publication – you can request it here.
A very helpful response has been provided by the authors comprehensively addressing all the concerns raised – you can request it here.