M-CHAT-R Autism Screening for 16-Month-Olds
16 months marks the start of the M-CHAT-R's validated age range, making it the earliest point at which this evidence-based checklist can reliably screen for autism indicators. Completing it now means acting at the earliest opportunity.
- Questions
- 20
- Format
- Yes / No
- Time
- ~5 minutes
- Completed by
- Parent or caregiver
- Age range
- 16–30 months
About the M-CHAT-R
At 16 months, most children are walking independently and beginning to use single words with clear intention — pointing to objects they want, waving bye-bye, and looking toward familiar sounds. Social behaviours such as joint attention (pointing to show interest and then checking back to a caregiver's face) are key milestones at this age.
The M-CHAT-R at 16 months specifically probes whether a child is sharing attention with others, responding to their name, and showing objects to caregivers. These behaviours are among the earliest and most reliable social communication indicators, often noticeable to attentive parents before any formal assessment.
Source: Modified Checklist for Autism in Toddlers, Revised — Robins, Fein & Barton (2009)
Frequently asked questions
- Is 16 months the right age to start autism screening?
- Yes — 16 months is the lower boundary of the M-CHAT-R's validated range, and earlier identification is consistently associated with better outcomes. If you have observed differences in your child's social engagement, eye contact, or communication, there is no benefit to waiting.
- My 16-month-old isn't saying many words. Is that a concern?
- At 16 months, a vocabulary of around 3 to 10 recognisable words is typical, though there is considerable variation. The M-CHAT-R focuses on social communication — pointing, name response, joint attention — rather than word count alone, making it useful even for children with limited verbal output.
- 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