Intact facial adaptation in autistic adults.
High-functioning autistic adults adapt to faces like anyone else, so earlier child deficits likely fade with age.
01Research in Context
What this study did
Cook et al. (2014) tested high-functioning autistic adults in two lab tasks.
They measured how long each face "stuck" in the viewer’s mind after staring.
The team compared these aftereffects to matched adults without autism.
What they found
Autistic adults showed the same facial aftereffects as non-autistic peers.
Identity and expression adaptations were statistically equal between groups.
The data say the basic face-tuning mechanism is intact in adult autism.
How this fits with other research
Van der Donck et al. (2023) saw the same null difference using EEG, a nice replication.
Falcomata et al. (2012) looks like the opposite: their autistic adults still struggled to label gender from odd faces. The clash is solved by task type—adaptation is spared, but prototype abstraction can stay weak.
Hartston et al. (2024) also report weaker face templates in the same population. Together the papers hint that fast updating works, yet stable long-term models remain fragile.
Why it matters
If you teach social skills to autistic adults, don’t assume they can’t read faces at all. Their quick calibration is normal, so brief exposure or modeling still works. Do check whether they can pull out the “average” face rule when you ask them to sort or label new people—extra cue cards or explicit feature prompts may still be needed.
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02At a glance
03Original abstract
Adaptation paradigms seek to bias subsequently viewed stimuli through prolonged exposure to an adapting stimulus, thereby giving rise to an aftereffect. Recent experiments have found that children with autism spectrum disorders (ASD) show reduced facial aftereffects, prompting some researchers to speculate that all individuals with ASD exhibit deficient facial adaptation. However, caution is required when generalizing findings from samples of children with ASD to the wider ASD population. The reduced facial aftereffects seen in child samples may instead reflect delayed or atypical developmental trajectories, whereby individuals with ASD are slower to develop adaptive mechanisms. In the present study, two experiments were conducted to determine whether high-functioning adults with ASD also show diminished aftereffects for facial identity and expression. In Experiment 1, using a procedure that minimized the contribution of low-level retinotopic adaptation, we observed substantial aftereffects comparable to those seen in matched controls, for both facial identity and expression. A similar pattern of results was seen in Experiment 2 using a revised procedure that increased the contribution of retinotopic adaptation to the facial aftereffects observed. That adults with autism can show robust facial aftereffects raises the possibility that group differences are seen only at particular points during development, and may not be a lifelong feature of the condition.
Autism research : official journal of the International Society for Autism Research, 2014 · doi:10.1002/aur.1381