RAADS-R
An 80-question self-report questionnaire for adults
RAADS-R autism questionnaire for adults, based on Ritvo et al. 80 questions, about 20 minutes, free private results. A screening result is not a diagnosis.
Test Information
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Guides to understand your result
Research and Validation
These sources describe the original instrument. This website's online implementation is not independently clinically validated.
- Original RAADS-R Validation Study
Ritvo, R. A., Ritvo, E. R., Guthrie, D., Ritvo, M. J., Hufnagel, D. H., McMahon, W., ... & Eloff, J. (2011). The Ritvo Autism Asperger Diagnostic Scale-Revised (RAADS-R): A scale to assist the diagnosis of Autism Spectrum Disorder in adults: An international validation study. Journal of Autism and Developmental Disorders, 41(8), 1076-1089.
- RAADS-R Psychometric Properties
Andersen, L. M., Näswall, K., Manouilenko, I., Nylander, L., Edgar, J., Ritvo, R. A., ... & Bejerot, S. (2011). The Swedish version of the Ritvo Autism and Asperger Diagnostic Scale: Revised (RAADS-R). A validation study of a rating scale for adults. Journal of Autism and Developmental Disorders, 41(12), 1635-1645.
- Limitations in a clinical referral sample
Jones et al. (2021). The Effectiveness of RAADS-R as a Screening Tool for Adult ASD Populations. Autism Research and Treatment.
- RAADS-R original questionnaire and scoring appendix
Original questionnaire, domains and scoring instructions; this online implementation is not independently validated.
Important Notice
This is a screening tool, not a diagnostic instrument. Only a qualified healthcare professional can provide an autism diagnosis. If you have concerns, please consult with a psychologist, psychiatrist, or other qualified professional.
Frequently Asked Questions
What is the RAADS-R?
The RAADS-R is a comprehensive 80-question screening tool designed to identify autistic traits in adults. Developed by Dr. Riva Ariella Ritvo and colleagues, it evaluates 4 key areas — Social Relatedness, Circumscribed Interests, Sensory Motor, and Language.
How accurate is this test?
The original study reported high sensitivity and specificity in its study sample with clinician-supported administration. Those figures do not describe the accuracy of this online self-assessment. RAADS-R cannot confirm or rule out autism; results need developmental history and current experiences for context.
What does my score mean?
The total ranges from 0 to 240. The original study used 65 as a research screening threshold, not a diagnosis or severity rating. We do not use 130 to classify traits as severe. The four subscales summarize groups of answers and do not establish clinical levels of difficulty.
Can this test diagnose autism?
No — this is a screening tool only. An official diagnosis requires a comprehensive evaluation by a qualified healthcare professional, such as a psychologist or psychiatrist who specializes in autism. The RAADS-R can help identify traits that warrant further assessment.
How is RAADS-R different from AQ-10 or AQ-50?
RAADS-R is more comprehensive — 80 questions vs. 10 or 50. It uses a unique 4-point scale that captures how traits change over time (childhood vs. adulthood). Plus, it gives detailed scores across 4 key areas, making it ideal for adults seeking a thorough self-assessment.
Is my data private?
Your answers and scores are processed and stored locally in your browser and are not sent to our servers, GA4, or Umami. We use GA4 and Umami for limited site-usage analytics, including page visits and anonymous test start or completion events; these events do not contain answers or scores. You can remove saved progress and results by clearing this site's browser data.
Can I retake the test?
Yes, you can retake it anytime. However, for the most accurate results, try to answer honestly based on your typical experiences throughout your life — not how you wish to be or think you should answer.
How long does the test take?
The RAADS-R typically takes about 20 minutes. Take your time to read each question carefully and answer honestly. You can pause and resume anytime — your progress is saved in your browser.
Can I share my results with my doctor?
Absolutely! You can print or screenshot your results to share with your healthcare provider. Your subscale scores can be particularly helpful for specialists conducting a comprehensive evaluation.
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