Arithmetic performance of children with cerebral palsy: the influence of cognitive and motor factors.
For kids with CP, finger dexterity and quick word reading predict math success better than IQ.
01Research in Context
What this study did
van Rooijen et al. (2012) looked at what helps kids with cerebral palsy do math. They tested a small group of primary-school children. The team measured IQ, fine and gross motor skills, word reading, and verbal memory.
Then they ran a model to see which skills best predicted arithmetic scores.
What they found
Two things mattered most: how well the child could read short words and how well they could move their fingers. IQ and big-muscle movement added little to the model.
In plain words, fine motor control and quick word decoding drive math success in CP more than general intelligence.
How this fits with other research
The finding lines up with Peeters et al. (2009). That earlier CP study also showed IQ was less important than speech and hearing skills for verbal memory. Together the papers tell a story: in CP, specific small skills trump overall IQ.
Critten et al. (2019) extend the idea to reading and spelling. They found phonological and visual memory predicted literacy delays in CP. Maaike’s group links those same micro-skills to math, showing the predictors cross academic subjects.
An apparent contradiction pops up with Levy (2011). In adolescents with intellectual disability, IQ fully controlled the link between phonological awareness and reading. Why the difference? Age and diagnosis. Yonata’s sample was older and had ID, not CP. In CP, motor and decoding skill seem to act directly, not through IQ.
Why it matters
Stop assuming a low IQ score means poor math potential for kids with CP. Check fine motor skill and single-word reading first. If those are weak, add brief daily drills: pinch clothespins for finger strength, rapid flash-card reads for decoding. Five minutes before math lessons can pay off in better problem-solving later.
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02At a glance
03Original abstract
Children diagnosed with cerebral palsy (CP) often show difficulties in arithmetic compared to their typically developing peers. The present study explores whether cognitive and motor variables are related to arithmetic performance of a large group of primary school children with CP. More specifically, the relative influence of non-verbal intelligence, working memory, word decoding capacities, gross- and fine motor skills on arithmetic performance is examined using structural equation modeling. One-hundred sixteen primary school children with a formal diagnosis of CP participated (76 males, M = 7; 3 years, SD = 3 months). In agreement with previous studies our results showed that the cognitive and motor predictors were all positively correlated to each other. Furthermore, in the cognitive model, non-verbal intelligence and word decoding were related to arithmetic in primary school. Our combined model (that included both motor and cognitive variables) showed that word decoding and fine motor skills were the strongest predictors of arithmetic performance. To conclude, this study was the first to show the influence of word decoding and fine motor skills on arithmetic performance of children with CP.
Research in developmental disabilities, 2012 · doi:10.1016/j.ridd.2011.10.020