A meta-analysis of 25 intervention studies found 3 studies that reported sensory integration therapy as effective, 8 studies that reported mixed results, and 14 studies that indicated no benefits, suggesting that current evidence does not support the use of sensory integration therapy in education and treatment of children with autism spectrum disorders.
Lang, R., O’Reilly, M., Healy, O., Rispoli, M., Lydon, H., Streusand, W., . . . Giesbers, S. (2012). Sensory integration therapy for autism spectrum disorders: A systematic review. Research in Autism Spectrum Disorders, 6, 1004–1018.