Autism Rates Have Spiked, But Why?

Source: 
NPR
Date Published: 
December 20, 2011
Abstract: 

According to the Centers for Disease Control, nearly one percent of U.S. children have some form of autism, 20 times higher than the rate in the 1980s. Alan Zarembo of The Los Angeles Times and clinical psychologist Catherine Lord discuss what's behind the growing number of diagnoses.