Skin conductance responses to another person's gaze in children with autism.
Autistic kids sweat more when eyes meet theirs—clear bodily evidence that eye contact can feel aversive.
01Research in Context
What this study did
The team measured skin conductance in autistic and neurotypical kids while they watched faces. Sometimes the face looked straight at them. Sometimes the eyes looked away.
Skin conductance is a tiny sweat signal. It shows when the body is on alert. No shocks or tasks—just looking at pictures.
What they found
Autistic kids had bigger sweat spikes to direct gaze than to averted gaze.
Typical kids showed no difference. Eye contact lit up the alarm system only in the autism group.
How this fits with other research
Kaartinen et al. (2012) extended the finding: the bigger the sweat spike, the worse the child’s social skills. Same lab, same method—so the link looks solid.
Kaartinen et al. (2016) conceptually replicated it and added a twist: kids who never calmed down across trials had the most social trouble. Arousal matters, but staying aroused may matter more.
Lemons et al. (2015) seems to disagree. They used pupil size in preschoolers and found no extra arousal to mutual gaze. The clash fades when you spot the age gap: preschoolers may not yet show the older-kid pattern.
Why it matters
If eye contact feels like a threat, demanding it can backfire. Check for signs of stress—flushing, freezing, looking away—before you prompt “look at me.” Start with brief glances, pair them with favorite items, and build tolerance slowly. Let the data guide your pace, not the lesson plan.
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02At a glance
03Original abstract
The effects of another person's gaze on physiological arousal were investigated by measuring skin conductance responses (SCR). Twelve able children with autism and 12 control children were shown face stimuli with straight gaze (eye contact) or averted gaze on a computer monitor. In children with autism, the responses to straight gaze were stronger than responses to averted gaze, whereas there was no difference in the responses to these gaze conditions in normally developing children. Thus, these results showed that eye gaze elicited differential pattern of SCR in normally developing children and in children with autism. It is possible that the enhanced arousal to eye contact may contribute to the abnormal gaze behaviour frequently reported in the context of autism.
Journal of autism and developmental disorders, 2006 · doi:10.1007/s10803-006-0091-4