RAADS-R Scores Explained: Tier Bands & Interpretation
The RAADS-R is the 80-question Ritvo Autism Asperger Diagnostic Scale-Revised, validated by Ritvo et al. (2011) and refined by Hegarty et al. (2025). Scores run 0–240 across four sub-scales: Social Relatedness, Sensory-Motor, Circumscribed Interests, and Language. This guide explains every tier band and how to interpret your score.
Score Bands at a Glance
| 0–64 | Below threshold | Low autism likelihood on this measure. Most non-autistic adults score in this range. |
| 65–105 | Gray zone | Ambiguous. Some traits endorsed but not enough to clearly indicate autism. Cross-checking with another measure is the standard practice. |
| 106–139 | Consistent with autism | Strong screen-positive. Clinical assessment is the recommended next step. |
| 140–240 | Pronounced traits | High specificity for autism on this instrument. Clear screen-positive. |
What the Research Says
The RAADS-R was developed by Ritvo et al. (2011) and validated against autism diagnoses in adult clinical samples. The original threshold of 65 was selected to maximize sensitivity for autism in adult populations where misdiagnosis is common.
Hegarty et al. (2025) refined the RAADS-R scoring after concerns about the gray zone (65–105) producing high false-positive rates in samples with co-occurring anxiety, depression, or ADHD. Their work tightened the gray-zone interpretation and made cross-validation with other instruments (the AQ-10 in particular) the standard practice.
Sub-scale interpretation is often more informative than the total. The four sub-scales — Social Relatedness, Sensory-Motor, Circumscribed Interests, and Language — capture distinct facets of autism. A total of 100 with a Sensory-Motor-led pattern looks different from a total of 100 with a Social Relatedness-led pattern, even though the totals are equal.
Per-Score Interpretations
Frequently Asked Questions
What's a high RAADS-R score?
65 is the lower threshold; 106 begins the 'consistent with autism' band; 140+ is 'pronounced traits'. Scores well into the 140+ range have high specificity for autism.
Is the RAADS-R a diagnosis?
No — it's a screening instrument. Only a clinician can diagnose autism through formal assessment that includes developmental history.
Why does the RAADS-R have four sub-scales?
Autism manifests differently across people. The four sub-scales (Social Relatedness, Sensory-Motor, Circumscribed Interests, Language) help characterize the pattern, not just the total. Sub-scale profiles are useful for clinical conversations.
RAADS-R vs AQ-10?
The AQ-10 is shorter (10 items, ~3 min) and best as a quick first-pass screen. The RAADS-R is longer (80 items, ~20 min) and gives more depth via sub-scales. Cross-validation between them is the standard practice when results are borderline.
How accurate is the RAADS-R in the gray zone?
Less accurate than at the extremes. Hegarty et al. (2025) tightened gray-zone interpretation precisely because of false-positive concerns at 65–105. Cross-validation with another measure helps.
Can my score change over time?
RAADS-R scores are stable in adulthood. Significant changes between attempts (20+ points) are uncommon and usually reflect how you read ambiguous items rather than underlying change.
Why is my AQ-10 low but RAADS-R high?
The two screens probe slightly different things. The AQ-10 leans on social and communication items; the RAADS-R captures sensory-motor and language patterns more deeply. A high RAADS-R with a low AQ-10 often indicates Sensory-Motor-led traits.
How long does the RAADS-R take?
About 20 minutes for the full 80 items. There's no time pressure, so take your time — the instrument is designed to capture how you generally are.