A picture-based test is a fast and flexible way to assess intelligence in large studies of people with autism.

Girls who show severe emotional or behavioral problems are more likely to be diagnosed with autism than those who do not.

A combination of multiple diagnostic tests may gauge the extent to which adults with autism attempt to blend in.

Children with an extra copy of the 15q11-13 chromosomal region, the second most common genetic abnormality in people with autism, have unusually strong brain waves called beta oscillations. The preliminary findings, presented Friday at the Dup15q Alliance Scientific Meeting in Orlando, Florida, suggest that beta oscillations could distinguish children with dup15q syndrome from those with other forms of autism.

The brain enlargement commonly seen in toddlers with autism may persist into adolescence and adulthood.

Children with low intelligence or behavioral issues — but not autism — may meet the criteria for autism on standard diagnostic tests.

Watch the complete replay of Maureen Durkin’s webinar, in which she discussed the epidemiology of autism and intellectual disability, including changes in the prevalence of each condition.

Nearly half of children with autism who speak few or no words have cognitive skills that far exceed their verbal abilities.

Mutations in an autism-linked gene called AUTS2 do not cause the condition’s core social features, according to the most comprehensive clinical portrait to date.

Taking a close look at people who have a mutation in a known autism gene may reveal why these people often have vastly different characteristics.