Dyslexia Essay

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Dyslexia is one of the most common neurobehavioral disorders that haunt adolescents throughout their childhood. Commonly known as a reading disability (RD), dyslexia is a hereditary complex trait that occurs in five to seventeen percent of people. Neuroimaging studies show that dyslexic individuals display abnormal brain function compared to fluent readers when challenged with reading assignments (7). The exact genes that code for dyslexia are not certain, however substantial studies have potentially linked dyslexia to the KIAA0319 gene, the DCDC2 gene, and the DYX1 gene. The severity of each case is largely determined by environmental factors such exposure to reading and professional intervention. Significantly, the interplay between these external influences and innate genetic characteristics ultimately determine the performance of the dyslexic individual.
From a genetic perspective, chromosome six, fifteen, and eighteen are the main focus for most research. The KIAA0319 gene on chromosome six has been associated with low performance in tests for reading, spelling, orthography, and...

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