Myomancy ADHD, Dyslexia and Autism

Though dyslexia in English speaking countries is about 5% of the population it has long been thought that in Japan the incidence was a lot lower. However new research has shown that it is more common than believed. Professor Akira Uno at the Tsukuba University, Japan, found that between 1% and 8% had problems with one or more of the alphabets used by the Japanese and that these children also had problems learing English.
See Cultural and Brain Difference in Dyslexia for more on dyslexia and non-roman alphabets.