Brief Report: Evaluation of the Short Quantitative Checklist for Autism in Toddlers (Q-CHAT-10) as a Brief Screen for Autism Spectrum Disorder in a High-Risk Sibling Cohort.

Raza et al. (2019) tested a 10-question parent form called Q-CHAT-10. They gave it to parents of baby brothers and sisters of kids with autism. These babies are high-risk because autism runs in families.

Parents filled out the form when babies were 18 months old and again at 24 months. Later the team checked which toddlers got an autism diagnosis.

Scores on the Q-CHAT-10 were higher for toddlers who later got an autism diagnosis. The short form caught most true cases, but it also flagged some toddlers who did not have autism.

In plain words: the tool is good at finding risk, yet you will see false alarms.

Scarpa et al. (2013) saw the opposite pattern in rural, low-income families. Their M-CHAT gave lots of false positives among parents with less schooling. Sarah’s group worked with well-educated families who already knew about autism. Same kind of checklist, different setting, different accuracy—context matters.

Earlier work by Stancliffe et al. (2007) and Yama et al. (2012) showed longer CHAT forms work in high-risk toddlers. Sarah’s 10-item version keeps the power while saving time, building on those older studies.

Marlow et al. (2019) reviewed brief screens for low-resource countries. They included Q-CHAT-10 as a tool that could travel well because it is short and free.

If you screen baby siblings in early-intervention clinics, keep Q-CHAT-10 in your pocket. It takes two minutes and spots most future ASD cases. Always pair it with a follow-up interview or second tool; expect some toddlers to score high who turn out to be typical. Use the extra time you saved to plan next steps instead of doing a 20-minute form.