Watch the complete replay of Christine Conelea and Suma Jacob discussing the emergence of repetitive behaviors in autism and obsessive-compulsive disorder.

Clinical psychologist Adam Guastella is driven to develop treatments that work for all autistic people — and to throw birthday parties for a few of those people.

Clinicians can reliably diagnose autism roughly two years earlier than the typical age of diagnosis.

Autism’s prevalence in Northern Ireland is climbing, but government policies leave families unable to access the treatments they need.

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.

An evaluation of 11 tests of social skills has identified 8 that give credible results in autistic adults.

Without timely intervention, intellectual disability in autistic children can worsen as they grow older.

Heightened sensory perception in toddlers with autism may predict sleep problems at around age 7.

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