Neurocognitive and behavioral outcomes of younger siblings of children with autism spectrum disorder at age five.
Live conversation, not test scores, reveals social-language gaps in BAP siblings.
01Research in Context
What this study did
Meier et al. (2012) watched young learners brothers and sisters of kids with autism. Half carried the broader autism phenotype (BAP).
Each child played a 10-minute toy game with an adult. The team also gave the Preschool Language Scale. They compared the two scores.
What they found
On the test, BAP and typical kids scored the same. In the toy chat, kids with BAP took fewer turns, gave shorter answers, and needed more prompts.
Naturalistic play caught social gaps that the test missed.
How this fits with other research
Chuthapisith et al. (2007) saw no verbal IQ drop in preschool siblings. E et al. show that by age five, subtle social-language issues surface, but only in real talk.
Muller et al. (2022) found parents with high BAP over-rate autism symptoms. Together these papers warn: scores from checklists or parents can hide BAP—watch the child live.
Chien et al. (2017) reported more school behavior problems in older siblings. E’s early social-language findings may explain the pathway: weak conversation skills at five can grow into classroom trouble later.
Why it matters
If you assess siblings for early signs, add a short play chat. A five-minute conversation sample can flag pragmatic issues that standardized language tests miss. Clip a mic to the child’s shirt, press record, count turns and prompts. If numbers are low, start social-language goals early and recheck in three months.
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02At a glance
03Original abstract
Younger siblings of children with autism spectrum disorder (ASD; high-risk siblings) are at elevated risk for developing the broader autism phenotype (BAP), which consists of subclinical features of ASD. We examined conversational skills in a naturalistic context and standardized assessments of pragmatic language and communication skills in high-risk and low-risk school-age children with BAP (n = 22) and ASD (n = 18) outcomes, as well as comparison children without ASD or BAP (n = 135). Children with BAP characteristics exhibited lower conversational skills than comparison children, but did not differ on any of three standardized measures. Only the conversational ratings significantly predicted membership in the BAP versus Comparison group. This suggests that naturalistic tasks are crucial when assessing social-communication difficulties in children with a family history of ASD. LAY SUMMARY: The broader autism phenotype (BAP) consists of subclinical features of autism spectrum disorder (ASD) and is more common among family members of those with ASD. School-age children with BAP characteristics exhibited lower conversational skills than comparison children, but did not differ on standardized language measures tapping similar abilities. This suggests that naturalistic tasks may be more sensitive to the social-communication difficulties seen in some children with a family history of ASD than the standardized language tests used in most evaluations.
Journal of autism and developmental disorders, 2012 · doi:10.1007/s10803-011-1263-4