Early gesture, early vocabulary, and risk of language impairment in preschoolers.
Fewer gestures and words at 15 months warn of later language impairment—track both to catch risk early.
01Research in Context
What this study did
The team watched 15-month-olds during play and counted each child’s gestures and words.
They came back when the kids were 3 to 4½ years old and gave full language tests.
The study mixed children with and without early delays to see who later met criteria for language impairment.
What they found
Children who showed fewer gestures and smaller vocabularies at 15 months were more likely to score in the language-impaired range years later.
The link stayed strong even after the researchers accounted for overall development.
How this fits with other research
Riva et al. (2021) saw the same pattern in babies at high risk for autism: low gesture use at 12–18 months went hand-in-hand with later ASD symptoms, extending the warning sign to an even younger window.
Laister et al. (2021) flipped the lens forward: toddlers who entered Early Start Denver Model with richer gestures made bigger language gains after one year, showing the same early marker can also forecast therapy response.
Bello et al. (2018) found that Italian toddlers still scoring low on vocabulary at 29 months usually stayed delayed five months later, giving a cross-linguistic echo that gesture plus word counts are worth watching.
Sutherland et al. (2017) stretched the timeline the other way: smaller 24-month vocabularies predicted slightly higher adult autistic-trait scores 18 years later, hinting that early word gaps may cast a very long shadow.
Why it matters
You can spot risk before the second birthday. During intake, ask parents to show typical play and tally gestures along with words. If both are low, flag for speech referral and start parent-coaching on modeling gestures during daily routines. Early action can shift the trajectory.
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02At a glance
03Original abstract
BACKGROUND: Gesture precedes vocabulary development and may be an early marker of later language impairment. AIMS: Using data from the National Institute of Child Health and Human Development Study of Early Child Care and Youth Development, this study examined the contribution of children's (N=1064) early gestures and early vocabularies to their risk of language impairment in preschool years. METHODS AND PROCEDURES: At age 15 months, maternal reports on children's use of gestures and vocabulary comprehension and production skills were measured using the MacArthur Communicative Development Inventories. At age 3 and 4.5 years, children's language skills were assessed using the Reynell Developmental Language Scale and Preschool Language Scale-3, respectively. OUTCOMES AND RESULTS: After controlling for child, maternal, and family sociodemographic factors, children at later risk for language impairment were found to exhibit significantly less early gesture use and vocabulary skills relative to their typically developing peers. Early use of gestures was also significantly correlated with early vocabulary skills. CONCLUSIONS AND IMPLICATIONS: The effect of early gesture on children's later risk of language impairment was indirect and mediated by early vocabulary production. Early gesture may have the potential to serve as an early diagnostic tool and play a role in early intervention.
Research in developmental disabilities, 2016 · doi:10.1016/j.ridd.2016.06.012