10% of cases of dys-: lexia are caused by visual-perceptual problems, 90% are caused by a brain-based language processing disorder, difficulty associating phonemes, the smallest units of sound in a language, with particular letters or symbols. The International Dyslexia Association has a screen: http://www.interdys.org/AreYouDyslexic_AdultTest.htm, with definition of, myths about & resources for reading disorder.
Answered 9/1/2014
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