The results showed the following differences in handwriting kinematics:
- children with autism and those with ADHD were faster but less accurate than controls at each task
- children with autism performed poorly on the copying and tracing task
- children in the ADHD group struggled with copying but traced as well as controls.
- in all three experiments the children with autism who were worst at reproducing the letters scored lowest on working memory sub-scores of an intelligence quotient test
- the ADHD group and the control group did not show an association between letter reproduction and working memory
Reference: Hughes, V. Handwriting study points to motor, memory problems in autism. Retreived on 12/28/12 from Simons Foundation Autism Research Initiative at http://sfari.org/news-and-opinion/conference-news/2012/society-for-neuroscience-2012/handwriting-study-points-to-motor-memory-problems-in-autism.
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