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Childhood Autism Spectrum Test (CAST)

Childhood Autism Spectrum Test (CAST)

In about 7 minutes, it helps you understand how strongly autism related traits show up in a child ages 5 to 11. Simple, focused questions support informed next steps for evaluation or services.

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Questions: 377 minutes

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08:30

October 2, 2025

October 2, 2025
Material has been updated

October 2, 2025
Material has been published

14296 views

1464 completions

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How the Scales are Structured

example score

13/31

Childhood Autism Spectrum Scale (CASS)

Screens for the level of autism spectrum-related traits in a child based on parent-reported behavior and social-communication features.

Within expected range

Elevated autistic traits

0 – 14: Within expected range | 15 – 31: Elevated autistic traits

A score of 13 falls within the expected range (0–14), indicating no elevated level of autism spectrum-related traits on this screening scale.

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DATA-BASED USER COHORTS

Who Usually Takes This Test?

Parents noticing differences

46%OF USERS

Parents of children aged 5–11 who see social, communication, or behavior differences and want a quick, structured first check.

Families awaiting evaluation

34%OF USERS

Caregivers who have a referral or are on a waitlist for an assessment and want to document traits clearly before meeting a specialist.

School and support concerns

20%OF USERS

Parents whose child is struggling with peers, classroom routines, or intense interests and who want to understand whether autistic traits may be contributing.

BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.

RESULTS YOU CAN ACTUALLY USE

What You’ll See After You Finish the Test

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Interpretation

A structured, clinically grounded explanation. Our AI analyzes patterns and relationships between scales to provide a coherent interpretation — without alarmist language.

Statistical
Comparison

See how you compare to others. Your scores are placed in a statistical context, showing percentiles and trends based on anonymized platform data to help you understand what`s typical.

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Recommendations

Actionable guidance tailored to your profile. Receive clear, realistic suggestions you can apply immediately — focused on coping, self-regulation, and realistic next steps.

AI-Detected
Insights

Key patterns you might not notice on your own. Surfacing subtle connections in your responses that help you better understand what may be driving your current results.

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an AI Psychologist

Clarify, reflect, and explore right away. Talk through your outcomes, ask questions, and explore meanings in a calm, non-diagnostic dialogue environment.

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Used in 52+ countries

Benchmarking

See How You Compare

Once you finish the test, your results will be compared with real-world data from people in your country.
Below is a preview of the benchmarks we use to place your score in context.

Child Autism Spectrum Scale (CASS)

Average

17.8

Normal range

13.4 — 22.1

min.

max.

majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.

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CLEAR ANSWERS TO COMMON QUESTIONS

Frequently Asked Questions

Any questions left?

What does this questionnaire measure?

It screens for the presence and level of autism-related traits based on everyday behavior. It focuses on social interaction, communication, and restricted or repetitive interests.

Who is the questionnaire for?

It is intended for children ages 5 to 11. It is completed by a parent or primary caregiver who knows the child well.

How long does it take and how many items are included?

Completion typically takes about 7 minutes. It includes 37 questions.

How should responses be selected?

Choose the option that best matches the child’s usual behavior across settings, not an isolated event. If uncertain, use the most typical pattern observed over time.

How should the results be used?

Scores indicate whether follow-up evaluation or support may be warranted. Results are not a diagnosis and should be interpreted alongside clinical judgment and additional information.

WHAT THE TEST MEASURES

About This Assessment

Childhood Autism Spectrum Test (CAST)

autism

This parent-report screening questionnaire is used to identify elevated autism-related traits in school-age children. The Childhood Autism Spectrum Test (CAST) is intended to provide a structured, first-line estimate of symptom likelihood to inform whether more comprehensive evaluation may be warranted.

Developed by Patrick Bolton, Carol Allison, and Simon Baron-Cohen, it includes 37 items and typically takes about 7 minutes to complete. Items focus on observable behaviors relevant to social communication and interaction, as well as restricted or repetitive patterns of interests and behaviors.

Scores from the Childhood Autism Spectrum Test (CAST) should be interpreted in context with developmental history and other clinical information, and are not diagnostic on their own. Results are commonly used to guide referral decisions and to structure discussion with caregivers about next steps.

Author: Carol Allison, Patrick Bolton, Simon Baron-Cohen

Literature: Scott, F. J., Baron-Cohen, S., Bolton, P., & Brayne, C. The CAST (Childhood Asperger Syndrome Test): Preliminary development of a UK screen for mainstream primary-school children. Autism. 2002.; Williams, J., Scott, F. J., Stott, C., Allison, C., Bolton, P., Baron-Cohen, S., & Brayne, C. The CAST (Childhood Asperger Syndrome Test): Test accuracy. Autism. 2005.; Lord, C., Rutter, M., DiLavore, P. C., Risi, S., Gotham, K., & Bishop, S. Autism diagnostic observation schedule, second edition (ADOS-2) manual. Western Psychological Services. 2012.

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