... sample of 276 dyslexic cases, 88% of them had at least one relative who also experienced reading difficulties. He also looked at the developmental similarities between identical twins. Since identical twins are produced from the same zygote, both twins should have the same genetic makeup. Hallgren considered twelve pairs of identical twins; and found that both of the twins within the pair had the same learning difficulties. It has also been presented that hearing problem from an early age could lead to dyslexia. When a young child repeatedly suffers from colds and throat infections, their ears can become temporarily blocked. This in turn can affect the brain's ability to relate to the sounds it hears. The early ability to learn sounds and words is considered to be essential in the later development of language. Therefore, it is believed that if the child's hearing impairment continues unnoticed, it is likely ...

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