Autonomic Arousal Response Habituation to Social Stimuli Among Children with Asd.

Miia et al. tracked how kids’ bodies calm down when they see a face looking straight at them.

They measured skin temperature and heart rate in the children with autism while the kids watched short clips of eyes.

The team asked: do children whose bodies stay “on alert” longer also score worse on social skills tests?

Children whose heart rate stayed high across repeated eye clips had more social problems on the ADOS.

In plain words, the longer the body “startle” lasted, the bigger the social gap.

Lemons et al. (2015) looked at preschoolers and saw NO extra pupil size jump to mutual gaze.

The two studies seem opposite, but Miia tested older kids and watched habituation across minutes, while J used single-trial pupillometry in toddlers. Age and method explain the clash.

Eussen et al. (2016) also found slower brain habituation to fearful faces in ASD, matching Miia’s body-level result—same pattern, different window.

If a client’s heart still races after the third greeting, don’t push more eye contact—switch to shorter looks or side-by-side play first. Track calming speed as a social readiness cue, not just eye direction.