Ritvo Autism Asperger Diagnostic Scale-Revised (RAADS-R)
For each statement, the RAADS-R asks not just whether it's currently true, but also whether it was true before age 16 -- since autistic traits develop in childhood, even when they're only recognized in adulthood. This test is meant for adults (16+) and takes 15-30 minutes depending on reading speed.
Comparison basis: 🏥 Clinical sample · Cut-off from the validation literature
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80 statements · ~20 min
Important for interpretation
Screening is not diagnosis. A score above the cut-off of 65 does not mean "autism" — it means a professional assessment may be worthwhile. A low score does not rule autism out either; strong "masking" can lower it (see the CAT-Q). Current research raises real questions about the RAADS-R's diagnostic specificity, and the total score bundles four different trait areas rather than being a single "autism score." An actual diagnosis relies on instruments such as the ADOS-2 and ADI-R together with clinical judgement.
Worksheet pack for this topic
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