I also offer testing for children (ages four and up), adolescents, and adults to diagnose autism spectrum disorder (ASD). Assessments are appropriate to diagnose or confirm autism, may help identify areas of strengths and deficits, and can be used to aid early intervention. I use the Autism Diagnostic Observation Schedule (ADOS-2), the gold standard for autism diagnosis. Generally, this is used in conjunction with other measures which may, in some cases, include a school observation.