Autistic people who are hyperactive or have difficulty controlling their own impulses are the most likely to show ongoing self-injury.

Restricted interests and repetitive behaviors constitute one of two criteria that define autism in the diagnostic manual for psychiatry.

Researchers have created an animated monkey avatar that makes realistic facial expressions — and that may yield insight into how autistic people interpret facial expressions.

Researchers say they are unimpressed with a study that underpins a tech company’s new digital therapy for autism.

Autistic people have trouble making facial expressions appropriate to the circumstances.

Toddlers with autism show less fear when confronted with something scary than do typical children or those with developmental delay.