Childhood Autism Spectrum Test

The CAST entails a questionnaire of 39 items, commonly filled out by a parent or caregiver of a child aged 4 to 18 years. Typically, it takes around 20 to 30 minutes to finish, assuming they know what to tick for all items.

The CAST score helps identify potential autism traits. Scores of 15 or above suggest significant developmental differences, prompting referral for further evaluation. It’s a screening tool—not a diagnostic assessment.

The Childhood Autism Spectrum Test can be used by healthcare professionals, educators, and caregivers to screen children aged 4–11 for autism traits, with interpretation ideally handled by trained clinicians.

The Childhood Autism Spectrum Test can be used by healthcare professionals, educators, and caregivers to screen children aged 4–11 for autism traits, with interpretation ideally handled by trained clinicians.