AuDHD Test

Comprehensive AuDHD Assessment

The most thorough AuDHD screening available — combining three validated instruments.

2

ASRS-5 — 6 questions assessing ADHD traits

1

RAADS-R — 80 questions assessing autism traits across 4 dimensions

3

CAT-Q — 25 questions assessing camouflaging behaviors

111 questions — approximately 28 minutes

About the Comprehensive AuDHD Assessment

This is the only online assessment that combines three validated instruments to evaluate autism traits, ADHD traits, and camouflaging behavior in a single session.

By combining the RAADS-R (80 questions for autism), ASRS-5 (6 questions for ADHD), and CAT-Q (25 questions for camouflaging), this assessment provides a three-dimensional view of your neurocognitive profile. The camouflaging dimension is crucial — it helps explain why some individuals score below threshold on autism screenings despite having significant autistic traits. If you've already completed our quick screening, your ADHD results carry over automatically.

How Comprehensive Scoring Works

Each of the three instruments is scored independently using its validated scoring method.

The RAADS-R produces a total score (0-240) plus four dimension subscores. The ASRS-5 produces a weighted total score (0-24). The CAT-Q produces a total score (25-175) plus three subscale scores. These scores are then interpreted together to provide a comprehensive profile. The autism/ADHD interpretation follows clinical cutoffs: RAADS-R ≥106 for autism traits, ASRS-5 ≥14 for ADHD traits.

The power of this combined assessment is that it reveals patterns that single instruments miss. For example, high CAT-Q scores alongside borderline RAADS-R scores may indicate masked autism. High scores on both RAADS-R and ASRS-5 suggest co-occurring AuDHD, which affects 50-70% of autistic individuals.

Frequently Asked Questions

Why does this assessment combine three instruments?
Each instrument captures a different dimension that the others miss. The RAADS-R provides comprehensive autism trait assessment across four domains, but cannot detect ADHD. The ASRS-5 accurately screens for ADHD but says nothing about autism. The CAT-Q reveals camouflaging behaviors that may suppress scores on autism screenings. Together, they create a three-dimensional profile that accounts for the complex overlap between autism, ADHD, and masking — giving you and your clinician a much more complete and nuanced picture than any single instrument alone.
Can I take breaks during the 111 questions?
Yes, and we encourage you to do so if needed. The assessment saves your progress, so you can pause and return without losing your answers. We recommend taking a brief break between sections — after the RAADS-R (80 questions), before the ASRS-5 (6 questions), and before the CAT-Q (25 questions). If you've already completed our quick AuDHD screening, your ADHD results are automatically carried over, reducing the total to 105 questions. Answer each question based on your first instinct rather than overthinking, as this tends to produce the most accurate results.
Is 25 minutes too long for accurate results?
Research on assessment fatigue suggests that self-report questionnaires remain reliable for sessions up to 30-40 minutes, so 25 minutes falls well within the accuracy window. That said, fatigue can affect anyone — take breaks if you notice your attention drifting. The assessment is structured to help maintain engagement: the RAADS-R's lifetime perspective keeps you reflecting on meaningful experiences, the ASRS-5 is refreshingly quick at just 6 items, and the CAT-Q's masking focus often sparks personal insight. If you feel fatigued, pause rather than rush through.
How are the three scores combined for interpretation?
Each instrument is scored independently using its own validated scoring method — we never modify or blend the algorithms. The RAADS-R uses 0-3 point scoring across 80 items, the ASRS-5 uses machine-learning-optimized weighted scoring across 6 items, and the CAT-Q uses 7-point Likert scaling across 25 items. After independent scoring, the results are interpreted together as a profile. High CAT-Q scores provide context for borderline autism scores, and the RAADS-R/ASRS-5 combination reveals whether traits point to autism, ADHD, or both.
What is AuDHD and how common is it?
AuDHD refers to the co-occurrence of autism and ADHD in the same individual. Research by Rong et al. (2021) found that 50-70% of autistic individuals also meet criteria for ADHD, making this one of the most common neurodevelopmental co-occurrences. AuDHD creates a unique experience — the need for routine (autism) can conflict with the need for novelty (ADHD), and sensory seeking and sensory avoidance may alternate unpredictably. Understanding the interaction between these conditions is essential for effective support and self-understanding.
Should I do the full assessment or individual tests?
It depends on your goals. If you want a quick initial screening, our individual tests — the AQ-10 for autism (2 minutes) or ASRS-5 for ADHD (1 minute) — provide fast results with validated accuracy. If you want a thorough, multi-dimensional evaluation, this comprehensive assessment gives you and your clinician much more to work with. The camouflaging dimension (CAT-Q) is especially valuable if you suspect masking might affect your screening scores. Many people start with individual tests and then move to the full assessment for a deeper understanding.
Can I share these results with my doctor?
Absolutely, and we encourage it. Your results page can be saved or printed as a reference for your appointment. When sharing with your doctor, emphasize that these are validated screening instruments (RAADS-R, ASRS-5, and CAT-Q) with published research backing. Clinicians familiar with these tools will recognize the scoring and thresholds. If your doctor is less familiar with adult neurodevelopmental screening, the dimensional breakdown and references can help guide the conversation toward appropriate next steps for formal evaluation.
How do I find a clinician experienced with adult AuDHD?
Finding the right clinician makes a significant difference in the diagnostic process. Look for psychologists or psychiatrists who specifically list adult autism and ADHD assessment in their specialties — not just general mental health. Ask whether they use validated diagnostic tools (ADOS-2, ADI-R for autism; clinical interviews for ADHD) and whether they take a neurodiversity-affirming approach. Online directories from autism organizations, ADHD-specific clinician networks, and recommendations from neurodivergent community groups are often the most reliable sources for finding experienced practitioners.

References

Ritvo, R.A., et al. (2011). The RAADS-R. JADD, 41(8), 1076-1085.

Ustun, B., et al. (2017). The WHO ASRS for DSM-5. JAMA Psychiatry, 74(5), 520-527.

Hull, L., et al. (2019). Development and Validation of the CAT-Q. JADD, 49(3), 819-833.

Allison, C., et al. (2012). Toward brief 'Red Flags' for autism screening. JAACAP, 51(2), 202-212.

Rong, Y., Yang, C., Jin, Y., & Wang, Y. (2021). Prevalence of ADHD in ASD: A Systematic Review. Research in ASD, 83, 101759.

Lai, M.-C., et al. (2019). Prevalence of Co-occurring Mental Health Diagnoses in the Autism Population. Lancet Psychiatry, 6(10), 819-829.