Childhood Academic Performance: A Potential Marker of Genetic Liability to Autism.
Janna Guilfoyle, Molly Winston, John Sideris and 5 others
PMID 35194728WHAT IT FOUND
Unaffected siblings of children with autism showed lower childhood performance in language usage and capitalization compared to controls.
These subtle language differences were linked to higher autism severity in their affected sibling and specific personality traits in their mothers.
Key findings
01Siblings of individuals with ASD demonstrated lower performance than controls in capitalization and language usage/expression subtests, despite having higher verbal IQ scores.
02Slower development in language subtests among unaffected siblings was associated with increased social affect symptom severity in their siblings with ASD.
03Mothers' rigid personality style was associated with slower language development in their unaffected children, while fathers' rigid style was associated with faster reading and math development.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
The sample size of unaffected siblings was small (29). Participants were recruited from Iowa and were mostly Caucasian, limiting generalizability. Both groups had higher-than-average IQ scores, which may mask deficits relative to the general population. The study is observational and cannot determine causality or the specific genetic mechanisms involved. Archival data were sparse at the earliest and latest grade levels.
Declared interests
All authors declared no conflicts of interest.
The easy way to misread this
Do not interpret these findings as evidence that unaffected siblings have a clinical language disorder. The differences were subtle, restricted to specific subtests, and the siblings performed within the average range on current standardized measures of achievement.