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Different theories conceptualise dyslexia as either a phonological, attentional, auditory, magnocellular, or automatisation deficit. Such heterogeneity suggests the existence of yet unrecognised subtypes of dyslexics with distinguishable deficits. The purpose of the study was to identify cognitive subtypes of dyslexia.
The cerebellar theory of dyslexia asserts that the cause of dyslexia is an abnormality in the cerebellum (a region in the back of the brain), which in turn cause disruption in normal development, which causes issues with motor control, balance, working memory, attention, automatization, and ultimately, reading.
Dyslexia is a brain-based learning disorder "that affects how people process written language, especially when it comes to reading, writing and spelling," explains Jimmy Noorlander, a licensed ...
Dyslexia is divided into developmental and acquired forms. [16] Acquired dyslexia occurs subsequent to neurological insult, such as traumatic brain injury or stroke. People with acquired dyslexia exhibit some of the signs or symptoms of the developmental disorder, but require different assessment strategies and treatment approaches. [17]
Research also suggests a clear genetic basis for developmental dyslexia with abnormalities in certain language areas of the brain. [ 6 ] [ 7 ] However, there is also evidence that orthography, the correspondence between the language's phonemes (sound units) and its graphemes (characters, symbols, letters), plays a significant role in the type ...
He also showed that each route could be separately impaired in development—developmental dyslexia—and in brain damage—acquired dyslexia—again in both alphabetic and logographic scripts. To learn an alphabetic script, it is critical to learn how each letter is pronounced—this is sometimes called 'phonics'—but of course orthographies ...
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Thomas Richard Miles, T. R. Miles, more usually Tim Miles, (11 March 1923 – 11 December 2008) was Emeritus professor of psychology at Bangor University.. His research career was devoted to the study of developmental dyslexia as a constitutional disorder, likely to be "a form of aphasia", to the recognition that children with dyslexia have special education needs and that there should be a ...