CAST Autism Screening for 10-Year-Olds
At 10, social and emotional development begins to accelerate as pre-adolescent changes emerge. Children who have managed autism traits through the primary years may begin to show increasing difficulty as social demands, identity development, and peer awareness intensify.
- Questions
- 31
- Format
- Yes / No
- Time
- ~8 minutes
- Completed by
- Parent or caregiver
- Age range
- 4–11 years
About the CAST
Ten-year-olds are beginning the transition to pre-adolescence — showing growing interest in peer identity, independence, and the dynamics of social belonging. Differences in social understanding that have been partially masked may become harder to sustain as peer expectations grow more sophisticated.
Autistic girls and gender-diverse children are at particular risk of late identification at this age: many have developed effective masking strategies that conceal difficulties from adults while maintaining significant internal distress. The CAST is sensitive to traits across a range of presentations and can identify children for whom masking has been concealing the need for support.
Source: Childhood Autism Spectrum Test — Baron-Cohen et al., Autism Research Centre, Cambridge
Frequently asked questions
- My daughter seems fine at school but is very distressed at home. Could she be autistic?
- This pattern — known as masking or camouflaging — is particularly common in autistic girls. Maintaining the appearance of social competence throughout the school day requires enormous effort, and the resulting distress is often released in the safety of home. The CAST has been shown to identify this presentation, and a positive result would support a referral for comprehensive assessment.
- Is 10 too late for a diagnosis to make a difference?
- Absolutely not. An autism diagnosis at 10 can change the trajectory of secondary school, unlock EHCP support, reduce the risk of misdiagnosis (e.g. anxiety or conduct disorder), and give the child a meaningful framework for understanding themselves. Earlier is always better, but acting now at 10 is far better than waiting.
- What happens if my child screens at risk?
- A positive CAST result means enough traits are present to warrant professional follow-up. The recommended next step is a referral to a paediatric psychologist, developmental paediatrician, or specialist autism assessment service. Bringing printed results to your GP or school SENCO can support the referral conversation.
- Does a positive screen mean my child has autism?
- No. A positive screen is not a diagnosis. Many children who score above the CAST threshold do not receive an autism diagnosis after full evaluation. Only a qualified clinician conducting a comprehensive developmental assessment can diagnose autism spectrum disorder.
- How long does the CAST take?
- Most parents complete the 31 CAST items in 8 to 10 minutes. Your result with a score band and guidance is available immediately after the last question.
Free · Private · Results in under 15 minutes