15-20% of the world’s population has a reading disability. Dyslexia is the most common cause of reading, writing and spelling difficulties.  Dyslexia is a genetic disorder. 

Dyslexia affects males and females nearly equally, and people from different ethnic and socio-economic backgrounds as well. A person can have more than one learning disability.  In studies almost 50% of those diagnosed with dyslexia have also been diagnosed with ADD or ADHD.  Although disabilities may co-occur, one is not the cause of the other.

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