Parental recognition of developmental problems in toddlers with autism spectrum disorders.

Chawarska et al. (2007) asked parents when they first noticed something was different about their toddler. The team then linked that timing to the child's social, language, and thinking scores at ages 2 and 4.

They also compared two groups: children later labeled autism versus those labeled PDD-NOS.

Parents who raised concerns earlier had children with stronger social and nonverbal skills years later. Kids whose parents spoke up sooner also talked and played better with others.

The first worry differed by diagnosis. Parents of children with autism most often named social or motor delays first. Parents of children with PDD-NOS most often named speech delays first.

Rojahn et al. (1994) looked at first-birthday home videos and found four clear behaviors—pointing, showing, looking at others, and responding to name—flagged autism with 91% accuracy. Katarzyna’s work moves the lens from video coding to parent voice, showing parent timing matters just as much as expert coding.

Veness et al. (2012) tracked gesture scores in a community sample and showed gesture gaps at 12 and 24 months separated ASD from other delays. The two studies line up: early social markers, whether caught by test or by parent, forecast later skills.

Gordon et al. (2015) counted gestures at 13-15 months and linked lower counts to later ASD diagnosis and poorer language. Again, the message matches—early social and motor signs are signal, not noise.

Davidovitch et al. (2023) described children diagnosed after age 6 who had earlier been called “language delay” or “ADHD.” These late-diagnosed kids often had peer-social problems that were missed. Katarzyna’s data hint that asking about social and motor delays before age 2 could prevent this late route.

At every well-baby visit, ask parents two quick questions: “Any worries about how your child plays with others?” and “Any worries about sitting, walking, or using hands?” Early yes answers point to kids who need closer watch and faster help. The sooner you act, the better the social and thinking gains you can protect.