Journal of Attention Disorders published research on kinematically characterizing the handwriting of 14 boys with ADHD-combined type and 14 typically developing boys. The boys wrote a series of four cursive letter 'l's using a graphics tablet and a stylus.
The results indicated the following:
1. Children with ADHD-CT had more inconsistent writing size than did TD controls.
2. ADHD-CT symptom severity, specifically inattention, predicted poorer handwriting outcomes.
The researchers concluded that children with ADHD-CT display subtle handwriting differences and exhibit handwriting impairments in a manner dependent on symptom severity.
Reference: Rebecca A. Langmaid, Nicole Papadopoulos, Beth P. Johnson, James G. Phillips, and Nicole J. Rinehart. Handwriting in Children With ADHD. Journal of Attention Disorders August 2014 18: 504-510, first published on May 22, 2012 doi:10.1177/1087054711434154
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