Up to 10 percent of the population is affected by specific learning disabilities such as dyslexia and autism, British researchers say.
http://www.upi.com/Health_News/2013/04/19/10-percent-have-autism-dyslexia-ADHD-language-impairment/UPI-33851366345709/
http://www.upi.com/Health_News/2013/04/19/10-percent-have-autism-dyslexia-ADHD-language-impairment/UPI-33851366345709/