Brandi Tanner, Ph.D. August 19, 2018 Autism Testing Evaluation for Autism Spectrum Disorder: The Benefits of Early Diagnosis and Intervention Brandi Tanner, Ph.D. August 19, 2018 Autism Testing If you suspect that your child might have Autism Spectrum Disorder (ASD), then you shouldn’t wait to get more information. Early diagnosis and intervention lead to much better outcomes than if you wait longer to get an evaluation.