Comparing internal representations of facial expression kinematics between autistic and non-autistic adults.
Autistic adults don’t perceive anger as moving faster—both groups similarly exaggerate emotion speed in their mind’s eye.
01Research in Context
What this study did
The team asked autistic and non-autistic adults to watch short videos of faces. The faces changed from neutral to happy, angry, or sad. After each clip, the adults guessed how fast the emotion had moved.
The goal was to test the idea that autistic people over-speed anger in their mind.
What they found
Both groups said happy, angry, and sad faces moved at the same speed. The autistic adults did not exaggerate anger speed more than the other group. The old idea that they 'over-represent' anger was not supported.
How this fits with other research
Wilson et al. (2023) also found no deep split in emotion prototypes. They showed that non-autistic adults can read posed autistic faces just fine. Together, the two papers chip away at the myth that autistic and non-autistic minds hold wildly different emotion maps.
Older work told a different story. Williams et al. (2002) and Giesbers et al. (2020) saw atypical gaze: autistic adults looked less at eyes and more at mouths. Those papers seemed to clash with the new null result. The gap is likely method-based. Eye-tracking watches where people look; the speed task watches how they time emotion in memory. Different lenses, different answers.
Cook et al. (2014) and Van der Donck et al. (2023) add more null bricks. They found intact facial aftereffects and normal neural responses to quick expression changes. The 2022 speed data line up with this growing stack: basic face coding in autistic adults is largely typical.
Why it matters
If you teach social skills, drop the assumption that autistic clients 'see anger faster' or hold warped emotion templates. Instead, target teachable moments like context cues and two-way conversation. When a client misreads a face, look at lighting, timing, or anxiety first—not an in-built anger filter.
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02At a glance
03Original abstract
Recent developments suggest that autistic individuals require dynamic angry expressions to have a higher speed in order for them to be successfully identified. Therefore, it is plausible that autistic individuals do not have a 'deficit' in angry expression recognition, but rather their internal representation of these expressions is characterised by very high-speed movement. In this study, matched groups of autistic and non-autistic adults completed a novel emotion-based task which employed dynamic displays of happy, angry and sad point light facial (PLF) expressions. On each trial, participants moved a slider to manipulate the speed of a PLF stimulus until it moved at a speed that, in their 'mind's eye', was typical of happy, angry or sad expressions. Participants were shown three different types of PLFs-those showing the full-face, only the eye region, and only the mouth region, wherein the latter two were included to test whether differences in facial information sampling underpinned any dissimilarities in speed attributions. Across both groups, participants attributed the highest speeds to angry, then happy, then sad, facial motion. Participants increased the speed of angry and happy expressions by 41% and 27% respectively and decreased the speed of sad expressions by 18%. This suggests that participants have 'caricatured' internal representations of emotion, wherein emotion-related kinematic cues are over-emphasised. There were no differences between autistic and non-autistic individuals in the speeds attributed to full-face and partial-face angry, happy and sad expressions respectively. Consequently, we find no evidence that autistic adults possess atypically fast internal representations of anger.
Autism research : official journal of the International Society for Autism Research, 2022 · doi:10.1002/aur.2642