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The word. dyslexia, is of Greek origin and is made up of two parts: dys, meaning bad or abnormal and lex, meaning words.

Dyslexia is a type of language processing disability often manifested as a difficulty with written language, particularly with reading and spelling. Evidence suggests that it is a result of a difference in how the brain processes written and/or verbal language. It is separate and distinct from reading difficulties resulting from other causes, such as deficiencies in intelligence, non-neurological deficiency with vision or hearing, or from poor or inadequate reading instruction.

Dyslexia is most commonly characterized by difficulties with learning how to decode at the word level, to spell, and to read accurately and fluently. Dyslexic individuals often have difficulty "breaking the code" of sound-letter association (the alphabetic principle), and they may also reverse or transpose letters when writing or confuse letters such as b, d, p, q, especially in childhood. However, dyslexia is not a visual problem that involves reading letters or words backwards or upside down, nor are such reversals a defining characteristic of dyslexia.

Dyslexia is linked to the left hemisphere of the brain and is caused by inefficiencies in language processing areas. It may be a genetic disorder.

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9y ago

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