Autism Diagnostic Observation Schedule (ADOS-2)
What does Autism Diagnostic Observation Schedule mean?
The Autism Diagnostic Observation Schedule, Second Edition, or ADOS-2, is a standardized assessment tool used by trained professionals to observe how a child communicates, interacts socially, plays, and whether they show any restricted or repetitive behaviours associated with autism. During the assessment, a clinician guides your child through a series of structured activities and conversations designed to create natural opportunities for observation. The ADOS-2 is considered one of the most widely used tools in autism assessment and is often part of a broader evaluation that includes other measures and caregiver input.
Why this term matters
Understanding that the ADOS-2 may be part of your child's assessment can help you feel more prepared and less anxious about what to expect on the day. Results from the ADOS-2 often contribute to the diagnostic report that schools, therapists, and funding programs may ask for when your family is seeking support.
Canadian context
The ADOS-2 is used by psychologists, psychiatrists, and other trained clinicians across Canada, though wait times and who administers it can vary significantly by province, territory, and whether you are accessing assessment publicly or privately. If you are unsure whether an upcoming assessment includes the ADOS-2, it is always okay to ask the assessing team what tools they plan to use.
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