Learning language in autism: maternal linguistic input contributes to later vocabulary.
Longer mom sentences during play predict bigger child vocabularies six months later, equally for kids with autism and typical peers.
01Research in Context
What this study did
Bang et al. (2015) watched moms and kids play together for 30 minutes. Half the kids had autism, half were typically developing.
The team counted how long each mom's sentences were. Six months later they tested the children's vocabulary.
What they found
Kids whose moms used longer sentences knew more words six months later. This worked the same for both groups.
The link was just as strong for children with autism as for typical kids.
How this fits with other research
Boorom et al. (2022) seems to disagree. They found rigid, stiff talk in autism parent-child pairs. The gap closes when you see they studied babies and toddlers. Janet's team looked at preschool and elementary kids whose language was already growing.
Schneider et al. (2006) and Goldstein et al. (1991) back Janet up. When dads or moms were trained to wait, imitate, or use time delay, the children's word counts went up. Parent style clearly drives child speech.
Syriopoulou-Delli et al. (2012) add another piece. Infant joint attention and play forecast later communication. Mom's sentence length is one more early lever you can watch and tweak.
Why it matters
If you coach parents to stretch their own sentences during play, you give their child more language data to absorb. Model longer utterances, expand on the child's words, and keep the conversation going. This cheap, natural tactic works for autism and typical learners alike.
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02At a glance
03Original abstract
It is well established that children with typical development (TYP) exposed to more maternal linguistic input develop larger vocabularies. We know relatively little about the linguistic environment available to children with autism spectrum disorders (ASD), and whether input contributes to their later vocabulary. Children with ASD or TYP and their mothers from English and French-speaking families engaged in a 10 min free-play interaction. To compare input, children were matched on language ability, sex, and maternal education (ASD n = 20, TYP n = 20). Input was transcribed, and the number of word tokens and types, lexical diversity (D), mean length of utterances (MLU), and number of utterances were calculated. We then examined the relationship between input and children's spoken vocabulary 6 months later in a larger sample (ASD: n = 19, 50-85 months; TYP: n = 44, 25-58 months). No significant group differences were found on the five input features. A hierarchical multiple regression model demonstrated input MLU significantly and positively contributed to spoken vocabulary 6 months later in both groups, over and above initial language levels. No significant difference was found between groups in the slope between input MLU and later vocabulary. Our findings reveal children with ASD and TYP of similar language levels are exposed to similar maternal linguistic environments regarding number of word tokens and types, D, MLU, and number of utterances. Importantly, linguistic input accounted for later vocabulary growth in children with ASD.
Autism research : official journal of the International Society for Autism Research, 2015 · doi:10.1002/aur.1440