Distinct social attention profiles in preschoolers with autism contrasted to fragile X syndrome.
Kids with non-syndromic autism skip the whole face more than kids with fragile X or typical peers—use face engagement as a distinct intervention target.
01Research in Context
What this study did
The team watched where preschoolers looked while pictures of faces and social scenes flashed on a screen.
They compared three groups: kids with non-syndromic autism, kids with fragile X syndrome, and typically developing peers.
What they found
Both autism and fragile X groups spent less time looking at eyes and social scenes than typical kids.
Only the autism group also avoided looking at the whole face. This face-avoidance did not happen in fragile X or typical kids.
How this fits with other research
Lemons et al. (2015) saw no face-gaze differences in preschool autism, but their kids were higher-functioning and watched live faces. The new study shows deficits when autism is more severe and scenes are static.
Zhao et al. (2023) also found reduced mouth and face gaze in Chinese autism during real conversation. The pattern holds across cultures and settings, strengthening the signal.
Jones et al. (1998) first noted that one in four fragile X boys score above the autism cutoff. The eye-tracking data now clarify that their social attention is still better than idiopathic autism, helping separate the two conditions.
Why it matters
If a child rarely looks at the whole face, treat that as an autism-specific cue, not general developmental delay. Build lessons that reward face scanning—use stickers near your eyes, animated faces on tablets, or turn-taking games that require checking the mouth for words. For fragile X kids, focus on eye contact drills instead; their face processing is closer to typical. Document which part of the face the child watches; it sharpens differential diagnosis and keeps your intervention plan syndrome-smart.
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02At a glance
03Original abstract
Social attention is a critical skill for learning and development. Social attention difficulties are present in both non-syndromic autism spectrum disorder (nsASD) and fragile X syndrome (FXS), and our understanding of these difficulties is complicated by heterogeneity in both disorders, including co-occurring diagnoses like intellectual disability and social anxiety. Existing research largely utilizes a single index of social attention and rarely includes children with intellectual impairment or uses a cross-syndrome approach. This study investigated whether multi-trait social attention profiles including naturalistic initial eye contact, facial attention, and social scene attention differ in preschool children with nsASD and FXS matched on developmental ability (DQ) and contrasted to neurotypical (NT) controls. The relationship between DQ, ASD severity, and social anxiety and social attention profiles was also examined. Initial eye contact related to social scene attention, implicating that naturalistic social attention is consistent with responses during experimental conditions. Reduced eye contact and lower social scene attention characterized nsASD and FXS. Children with nsASD displayed less facial attention than FXS and NT children, who did not differ. Lower DQ and elevated ASD severity associated with decreased eye contact in nsASD and FXS, and lower DQ was associated with lower social scene attention in FXS. Sex, social anxiety, and age were not associated with social attention. These findings suggest social attention profiles of children with nsASD are highly similar to, yet distinct from, children with FXS. Children with nsASD may present with a global social attention deficit whereas FXS profiles may reflect context-dependent social avoidance.
Autism research : official journal of the International Society for Autism Research, 2023 · doi:10.1186/s11689-019-9284-y