Online CAST autism screening
The Childhood Autism Spectrum Test (CAST) is a screening questionnaire designed to help identify traits commonly associated with autism in children between the ages of 4 and 11. It was developed by researchers at the Autism Research Centre at the University of Cambridge and is completed by parents or caregivers based on their child’s everyday behavior and communication. The CAST includes a series of questions that focus on social interaction, communication, and behavioral patterns. While it is not a diagnostic tool, it can help highlight whether a child may benefit from further evaluation by a qualified professional.
How the CAST works
Who completes the CAST?
The CAST is typically completed by a parent, caregiver, or teacher who knows the child well and is familiar with their everyday behavior across different settings.
How long does the CAST take?
What does the CAST assess?
The CAST covers topics such as:
- Social interaction, such as engaging or playing with other children
- Verbal and nonverbal communication
- Use of imagination during play
- Repetitive behaviors or strong, narrow interests
CAST scoring
The CAST includes 37 yes-or-no questions that focus on behaviors and communication patterns commonly associated with autism spectrum disorder. After the questionnaire is completed, responses are reviewed and scored to determine whether a child shows characteristics that may be associated with autism and could benefit from further evaluation.
How the M-CHAT scoring works
Each response receives a score of 0 or 1, depending on whether it reflects a potential sign or trait of autism. The total score can range from 0 to 31. Only 31 of the 37 questions are scored; the remaining 6 are control questions.
Score range
Interpretation
Recommended action
0-14
Low likelihood of autism traits
No further action needed unless other concerns exist
15-30
Possible autism traits
Follow up with a professional autism evaluation
+31
High likelihood of autism
Immediate clinical assessment is recommended
What to expect after the CAST
Once you complete the Childhood Autism Spectrum Test, the team at Action Behavior Centers is here to guide you every step of the way.
1. Review of your child’s CAST results
Within one business day, a Clinic Admissions Associate (CAA) will contact you to review your child’s results and discuss any concerns you may have.
2. Comprehensive evaluation
If a child’s CAST results suggest traits commonly associated with autism, a follow-up evaluation may be recommended. One commonly used assessment is the Autism Diagnostic Observation Schedule, Second Edition (ADOS-2), a structured, in-person evaluation administered by trained clinicians.
After the assessment is completed, the results are reviewed and shared with the child’s healthcare provider. The provider considers this information alongside clinical observations and other relevant history to determine whether a diagnosis is appropriate and to guide next steps.
3. Personalized autism care plan
If a child receives a diagnosis of autism spectrum disorder, HEMYS supports families in understanding what comes next. Our team helps guide you through the early steps of care, which may include:
- Reviewing insurance coverage and verifying available benefits
- Meeting with a Board Certified Behavior Analyst® (BCBA®) to discuss your child’s strengths, needs, and priorities
- Developing individualized ABA therapy goals tailored to your child’s development and family goals
HEMYS ABA programs are designed to support growth across communication, daily living, and social skills. Therapy is delivered in a caring, structured environment that emphasizes consistency, collaboration, and meaningful progress.
CAST autism screening tool
Please answer the following questions based on how your child typically behaves. The CAST should be completed by someone who has observed the child across different settings and situations, such as at home, school, or during play.
If you have noticed a behavior only occasionally, but it is not something your child usually does, please select No. Be sure to choose Yes or No for every question so the results can be reviewed accurately.
Frequently asked questions about the CAST
Why is it important to identify autism early?
Identifying signs of autism spectrum disorder early can help children access supportive services at a time when intervention may be most beneficial. Early support may include evidence-based approaches such as Applied Behavior Analysis (ABA) therapy, which focuses on building communication, learning readiness, and everyday skills through structured, positive strategies.
Parents and caregivers play a key role in recognizing early developmental differences and seeking appropriate guidance. Screening tools like the CAST can help indicate when a child may benefit from further evaluation. Early awareness and timely support can make a meaningful difference in a child’s development and overall well-being.
What happens after I complete the CAST?
Identifying autism spectrum disorder in children early is important because it allows for timely access to early intensive behavioral intervention (EIBI), including HEMYS therapy. HEMYS therapy has been proven through decades of research to help children with autism improve their communication and social skills, prepare them for school, and reduce target behaviors. Caregivers play a vital role in monitoring their child’s development and advocating for their child’s needs.
What is HEMYS therapy?
What happens after I complete the CAST?
After you submit the CAST screening, a member of the HEMYS team will contact you to review the results, typically within one business day. Based on your child’s responses, we may recommend a next step such as a more comprehensive evaluation, including the ADOS-2. This type of assessment can offer additional insight and help determine whether further diagnostic evaluation may be appropriate.