What is the AQ-50 autism test?

The Autism Spectrum Quotient (AQ-50) is a 50-item self-report questionnaire developed by Baron-Cohen et al. (2001) to measure autistic traits in adults with typical intelligence. A score of 32 or above is the clinical screening threshold.

What is the RAADS-R and why is it the gold standard?

The RAADS-R (Ritvo Autism Asperger Diagnostic Scale-Revised) is an 80-item instrument by Ritvo et al. (2011). It achieves 97% sensitivity and 100% specificity. The clinical threshold is 65 of 240 points.

What does the CAT-Q measure?

The CAT-Q by Hull et al. (2019) measures masking and camouflaging of autistic traits. High CAT-Q with lower AQ/RAADS scores indicates successful masking that may explain a late or missed diagnosis.

No. All answers remain exclusively in your browser session. No data is transmitted to the server, stored in a database, or tracked in any way.

Does this screening replace a clinical autism diagnosis?

No. This is a self-screening tool for informational purposes only. A reliable diagnosis requires clinical evaluation by qualified professionals using validated instruments such as ADOS-2 and ADI-R.

How long does the autism screening take?

Approximately 20 minutes: AQ-50 about 7 minutes, RAADS-R about 12 minutes, and CAT-Q about 4 minutes. Questions auto-advance after each answer.

AQ-50, RAADS-R & CAT-Q: Free Autism Spectrum Screening

Screening Suite

Autism
Spectrum

AQ-50 · RAADS-R · CAT-Q · 155 Items · ~20 min

155 Items total

~20 Min estimated

3 Validated instruments

0 Data transmitted

AQ-50

50 items · ~7 min

Baron-Cohen et al. (2001)

Established screening tool for autistic traits in adults. Binary scoring across five cognitive and social domains.

Social Skills Attention Detail Communication Imagination

Threshold ≥ 32 / 50

Widely used in research and clinical pre-screening worldwide since 2001.

RAADS-R

80 items · ~12 min

Ritvo et al. (2011)

The most validated adult self-report instrument for ASD. Uniquely captures both current and childhood traits.

Language Social Sensory-Motor Interests

Threshold ≥ 65 / 240 Sensitivity 97 %

Gold standard for diagnosing ASD in adults.

CAT-Q

25 items · ~4 min

Hull et al. (2019)

Measures how much autistic traits are masked. Explains why many people go undiagnosed for decades.

Compensation Assimilation Masking

Score range 25 – 175 Triangulation

High CAT-Q with lower AQ/RAADS scores indicates successful masking.

1

AQ-50

50 items

2

RAADS-R

80 items

3

CAT-Q

25 items

Results

Radar Chart

This screening does not replace a medical or psychological diagnosis. A clinical evaluation by qualified professionals is required for a reliable assessment.

All answers remain exclusively in your browser. No data is transmitted, stored on a server, or tracked in any way. No cookies.

Results

Screening Report

AQ-50 0 /50

RAADS-R 0 /240

CAT-Q 0 /175

Domain	Score	Max	%

AQ-50, RAADS-R & CAT-Q: Free Autism Spectrum Screening

AutismSpectrum

Screening Report

Autism
Spectrum