Low Fidelity Imitation of Atypical Biological Kinematics in Autism Spectrum Disorders Is Modulated by Self-Generated Selective Attention.
Adults with autism skip copying odd movement curves but still land on time by focusing on start and end points.
01Research in Context
What this study did
Researchers asked the adults with autism to copy a hand movement shown on a screen. The model moved with odd, atypical speed curves instead of smooth motion. The team tracked how closely each person matched the exact path and timing.
They also measured where the adults looked during the task. This showed whether people used their eyes to pick out key parts of the movement.
What they found
Adults with autism did not copy the odd speed curves. Their hand paths looked very different from the model. Yet they hit the end point at almost the same moment, so timing accuracy was good.
Eye-tracking showed they spent more time looking at the start and end of the movement. This selective attention helped them land on time even though the full form was off.
How this fits with other research
Falcomata et al. (2012) saw that kids with autism also failed to copy odd speed curves. Both studies show the same core problem, but the 2016 paper reveals adults work around it by watching start and end spots.
Somogyi et al. (2013) found that young, non-verbal children with autism copy strange actions exactly but miss the model’s intent. The adult study flips this: grown-ups stop copying the exact form and instead use timing goals. Together they show a shift from exact copying to timing-based work-arounds.
Burrows et al. (2018) meta-analysis showed weaker facial imitation in autism. The new data say the issue is wider than faces; whole-arm kinematics are also tough, but adults can still hit time targets if you guide their eyes.
Why it matters
When you run imitation programs, do not expect adults with autism to mirror odd speeds or curved paths. Instead, cue them to watch the start and finish points. Use clear start and end markers, like colored dots or beeps, so they can use their strength in timing. This small change can keep therapy goals realistic and build on the attention skills they already have.
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02At a glance
03Original abstract
We examined whether adults with autism had difficulty imitating atypical biological kinematics. To reduce the impact that higher-order processes have on imitation we used a non-human agent model to control social attention, and removed end-state target goals in half of the trials to minimise goal-directed attention. Findings showed that only neurotypical adults imitated atypical biological kinematics. Adults with autism did, however, become significantly more accurate at imitating movement time. This confirmed they engaged in the task, and that sensorimotor adaptation was self-regulated. The attentional bias to movement time suggests the attenuation in imitating kinematics might be a compensatory strategy due to deficits in lower-level visuomotor processes associated with self-other mapping, or selective attention modulated the processes that represent biological kinematics.
Journal of autism and developmental disorders, 2016 · doi:10.1007/s10803-015-2588-1