December 8, 2010
Widening Our Perceptions Of Reading And Writing Difficulties
2 new studies shed light on different types of dyslexia and dysgraphia
Learning to read and write are complex processes, which can be disrupted in various ways, leading to disorders known as dyslexia and dysgraphia. Two new studies, published in a recent special issue of Elsevier's Cortex (http://www.sciencedirect.com/science/journal/00109452) provide evidence of this variety, suggesting that effective treatment needs to take it into account.
The other study, from Tel Aviv University, Israel, provided the first systematic description of a type of reading disorder called "attentional dyslexia" in which children identify letters correctly, but the letters jump between words on the page, e.g., "kind wing" is read as "wind king". Teachers and neuropsychologists often notice that children substitute letters when reading, but in this type of dyslexia the substitutions are not caused by inability to identify letters or convert them to sounds; they result from migrations of letters between words. The findings showed that letters would mostly migrate to the same position in another word, so the first letter of one word would switch places with the first letter of another word. Awareness to the existence of this type of dyslexia is important, because it suggests a straightforward way to assist these children in reading - by presenting a "Å½single word at a time, e.g., with the help of a word-sized window cut in a piece of cardboard.
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