Autism is the most common of the Pervasive Developmental Disorders, affecting an estimated 1 in 150 births (Centers for Disease Control Prevention, 2007). Roughly translated, this means as many as 1.5 million Americans today are believed to have some form of autism. And this number is on the rise.
The American Society of Autism estimates that the prevalence of autism could reach 4 million Americans in the next decade.
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