A widely used test for diagnosing autism may miss children whose parents are not concerned that their child may have the condition, according to a new study1.
The tool, called the Autism Diagnostic Interview-Revised (ADI-R), is a 93-item questionnaire that caregivers fill out. It is often used with another test, called the Autism Diagnostic Observation Schedule (ADOS), that clinicians complete. Results on the two tests usually agree, but children who score high on the ADOS sometimes score low on the ADI-R.
The study provides a possible explanation for this mismatch: Some parents do not recognize autism features in their children, or do not consider them to be problematic.
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