Reduced engagement of visual attention in children with autism spectrum disorder.
Christopher S McLaughlin, Hannah E Grosman, Sylvia B Guillory and 9 others
PMID 33966481WHAT IT FOUND
Children with autism showed reduced engagement of visual attention across both social and nonsocial stimuli.
This difference was driven by slower re-engagement with new targets. The finding was unrelated to social symptom severity but linked to cognitive ability.
Key findings
01Children with ASD displayed a significantly reduced overall gap effect compared to TD children, indicating reduced engagement with the central stimulus.
02The difference was driven by increased gap saccade latency in ASD, suggesting slower visual re-engagement, while overlap latency did not differ.
03Visual engagement differences were not specific to social stimuli and did not correlate with ASD symptom severity, but correlated with IQ in the ASD group.
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 ASD group had significantly lower IQ scores and fewer females than the TD group, though results held when controlling for these factors. The study design is cross-sectional, so it cannot determine if these visual attention differences are a cause or consequence of ASD symptoms. Caregiver-reported attention problems (CBCL) did not correlate with the eye-tracking measure, possibly because the CBCL captures broad behavioral inattention rather than specific visual engagement mechanisms.
Declared interests
The study was supported by the National Institute of Mental Health (NIMH) and the National Institute of Child Health and Human Development (NICHD). The authors declared no conflicts of interest.
The easy way to misread this
Do not interpret the lack of correlation with social symptoms as evidence that visual attention is irrelevant to social communication. The study suggests the mechanism is domain-general, but this visual deficit may still underpin social difficulties by limiting opportunities for joint attention, even if it is not specific to social stimuli.