This may explain why many children with autism in South Korea may go unnoticed and may explain a significant difference with children in the United States.

CNN: South Korean study may lead to higher autism estimates

According to the researchers, few children in South Korea are put in special education classes.

CNN: South Korean study may lead to higher autism estimates

Using mathematical algorithms, researchers estimate 1 in 38 children in South Korea have an autism spectrum disorder.

CNN: South Korean study may lead to higher autism estimates

Children in North America, South Korea, China and Japan attend similar BASF-sponsored programs.

FORBES: Chemistry Lesson

In this new study, researchers looked at all 55, 000 school children in a large metropolitan community of Seoul, which they say is representative not only of South Korea, but also many other developed nations.

CNN: South Korean study may lead to higher autism estimates