Psychophysiological and Behavioral Responses to a Novel Intruder Threat Task for Children on the Autism Spectrum.

South et al. (2017) built a new intruder-threat game for kids. A stranger enters the room and stares. The team recorded skin-conductance, heart rate, and motion in the children with autism and 20 typical peers.

All kids were 6-12 years old. Sensors on fingers and chest tracked tiny sweat bursts and movement. The goal: see if autism changes the body’s alarm to social danger.

Children with autism showed almost no skin-conductance spike when the stranger walked in. Typical kids jumped about 30 % above baseline.

Big surprise: how much a child wiggled predicted the spike better than the autism label. A calm typical kid and a calm autistic kid looked the same on the screen.

Riches et al. (2016) saw the same dampened skin response when kids with autism listened to scary music. The pattern holds across very different cues.

Duerden et al. (2012) looks like the opposite: autistic kids poured out more stress-hormone cortisol during a blood draw. The clash is solved by looking at the trigger. Social stare = low electrodermal answer. Medical poke = high hormone answer. Different systems, different rules.

Eisler (1984) warned us four decades ago: autistic children often give no first electrodermal response. Mikle confirms the old clue and adds that motion, not diagnosis, drives the rare spikes we do see.

Before you label a client as under-reactive, check if he is simply sitting still. A squirmy typical child can out-score a calm autistic child on skin-conductance. Use motion sensors or video along with your physiological data. When you plan exposure programs, know that social threat may not spark the body’s alarm you expect—so watch behavior, not just the polygraph line.