Journal
HUMAN MOVEMENT SCIENCE
Volume 65, Issue -, Pages 51-59Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.humov.2018.05.001
Keywords
Dysgraphia; Dyslexia; Drawing test; Learning disabilities; Motor control; Movement analysis
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Drawing tests in children diagnosed with dyslexia and dysgraphia were quantitatively compared. Fourteen children with dysgraphia, 19 with dyslexia and 13 normally developing were asked to copy 3 figures: a circle, a square and a cross. An optoelectronic system allowed the acquisition of the drawing track in three-dimensions. The participants' head position and upper limb movements were measured as well. A set of parameters including movement duration, velocity, length of the trace, Range of Motion of the upper limb, was computed and compared among the 3 groups. Children with dyslexia traced the circle faster than the other groups. In the cross test, dyslexic participants showed a reduced execution time and increased velocity while drawing the horizontal line. Children with dyslexia were also faster in drawing certain sides of square with respect to the other groups.
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