For years, we've thought of autism as lying on a spectrum, but emerging evidence suggests that it comes in several distinct ...

In the past nonverbal children with autism were considered mentally retarded, and those who had difficulties in communication were considered intellectually slow. Now it has become more widely ...

When people hear the word autism, it’s often associated with a specific set of traits. But in reality, autism spectrum disorder (ASD) is just that—a spectrum, encompassing a broad range of differences ...

Most IQ tests are administered verbally in a one-on-one setting. That setup may be difficult, if not impossible, for some autistic people because of their social-communication challenges. Restricted ...

Families of people with severe autism say the repeated expansion of the diagnosis pushed them to the sidelines. A new focus on the disorder has opened the way for them to argue their cause. Jodie ...

One in 36 children in the United States has autism, according to the Department of Health and Human Services (HHS) — but many don’t learn they’re on the spectrum until adulthood. Those who grow up ...

A wider public conversation has arisen over whether it's time for a shift in how we think about categories of autism, amid ...

Readers weigh in on the challenges of defining and diagnosing the condition. To the Editor: Re “In New Focus on Autism, Some Worry the Spectrum Is Too Broad” (front page, Oct. 5): One thing’s for ...