Capacity to improve fine motor skills in Williams syndrome.
Fine-motor practice fails without decent sleep in Williams syndrome, so fix sleep before you drill.
01Research in Context
What this study did
Researchers asked people with Williams syndrome to tap a finger sequence over and over. They compared the scores with typical peers.
The team also tracked each person's sleep for one night. They wanted to see if bad sleep blocked next-day learning.
What they found
The Williams group started far behind and stayed there. After many trials they gained almost no speed or accuracy.
Poor sleep efficiency, not low IQ, best predicted the tiny gains. Good sleepers learned a little; poor sleepers learned nothing.
How this fits with other research
Rochette et al. (2018) saw the same sleep-learning link in autistic adults. Both studies show weak slow-wave sleep and next-day motor scores that barely budge.
Lloyd et al. (2013) tracked toddlers with ASD and found the motor-age gap widened every six months. Together the papers warn that motor delays grow when sleep is poor across syndromes.
Green et al. (2020) showed autistic adults can learn a movement but stay shaky on force. The Williams data go further: even with simple finger taps, learning is almost flat. The studies do not clash; they map different points on the same 'hard-to-learn' curve.
Why it matters
Before you drill fine-motor goals, check the client's sleep log. If efficiency is under 85 %, treat sleep first or embed extra practice sessions across the day. Use short, spaced trials and celebrate micro-gains; the window for change is narrow in Williams syndrome.
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02At a glance
03Original abstract
BACKGROUND: Individuals with Williams syndrome (WS) are known to have difficulties in carrying out fine motor movements; however, a detailed behavioural profile of WS in this domain is still missing. It is also unknown how great the capacity to improve these skills with focused and extensive practice is. METHOD: We studied initial performance and learning capacity in a sequential finger tapping (FT) task in WS and in typical development. Improvement in the FT task has been shown to be sleep dependent. WS subjects participating in the current study have also participated in earlier polysomnography studies, although not directly related to learning. RESULTS: WS participants presented with great individual variability. In addition to generally poor initial performance, learning capacity was also greatly limited in WS. We found indications that reduced sleep efficiency might contribute to this limitation. CONCLUSIONS: Estimating motor learning capacity and the depth of sleep disorder in a larger sample of WS individuals might reveal important relationships between sleep and learning, and contribute to efficient intervention methods improving skill acquisition in WS.
Journal of intellectual disability research : JIDR, 2016 · doi:10.1111/jir.12317