M-CHAT-R Autism Screening for 30-Month-Olds
30 months is the final month of the M-CHAT-R's validated age range. Completing the checklist now and acting on the result promptly ensures your child benefits from the best available early screening before transitioning to age-appropriate instruments.
- Questions
- 20
- Format
- Yes / No
- Time
- ~5 minutes
- Completed by
- Parent or caregiver
- Age range
- 16–30 months
About the M-CHAT-R
At 30 months, children who are developing typically use multi-word sentences, engage in complex imaginative play, show clear awareness of others' emotions, and have a well-developed social communication system. Social interactions with peers are increasingly cooperative and reciprocal.
For parents completing the M-CHAT-R for the first time at 30 months, the result is still valid and actionable. If positive, initiating a referral immediately is important — the formal assessment process can take time, and starting it now gives the earliest possible access to diagnosis and support.
Source: Modified Checklist for Autism in Toddlers, Revised — Robins, Fein & Barton (2009)
Frequently asked questions
- Is it too late to use M-CHAT-R at 30 months?
- 30 months is the upper boundary of the validated range — so right now is still appropriate. If the result is positive, act on it promptly. For children who have already passed 30 months, the Q-CHAT (ages 2–4) may be the next suitable screening tool.
- What happens after 30 months if there are still concerns?
- For children aged 2 to 4, the Q-CHAT is the next validated screening instrument. For children aged 4 and above, the CAST is appropriate. The exact tool matters less than ensuring a formal autism assessment is sought — early or timely identification enables earlier access to support.
- What happens if my child screens at risk?
- A positive screen means enough reported behaviours are present to warrant further evaluation. The recommended next step is a referral to a developmental paediatrician, paediatric psychologist, or specialist autism diagnostic service. Early referral leads to earlier access to support.
- Does a positive screen mean my child has autism?
- No. A positive screen is not a diagnosis. Many children who screen positive do not receive an autism diagnosis after full evaluation. Only a qualified clinician carrying out a comprehensive assessment can diagnose autism spectrum disorder.
- How long does the screening take?
- Most parents complete the M-CHAT-R in 3 to 5 minutes. Results and guidance are available immediately after the last question.
Free · Private · Results in under 15 minutes