Some autistic children’s communication and motor skills begin to decelerate between 9 and 18 months — years before the average age of diagnosis.

Nearly all children who lose their autism diagnosis have other conditions, such as anxiety and language and behavioral disorders.

The popularity of mobile devices offers families the promise of communication with their autistic child, but success is more than a click away.

Watch the complete replay of Evelina Fedorenko discussing language processing and development in autism.

A new parent questionnaire is the first test designed to gauge anxiety in children with autism.

A much-touted behavioral therapy for autism, the Early Start Denver Model, may not be as effective as its creators had hoped.

New artificial-intelligence software detects and analyzes the ultrasonic squeaks and cries that constitute inaudible rodent language.

Eye tracking shows that mavoglurant, a once-abandoned experimental drug for fragile X syndrome, enters the brain and boosts social interest, says Elizabeth Berry-Kravis.

Three distinct categories of traits best characterize autism, according to a study of more than 6,000 children.

Scientists are finding new ways to test cognition in autistic individuals who speak little or not at all.