Brothers and sisters of people with autism are both about two to three times more likely than the general population to have an autistic child themselves.

Three widely used tests for assessing autism can accurately measure trait severity in girls and boys.

A new study highlights the challenge of distinguishing genetic variants linked to autism from those associated with cognitive development.

Some people who have lost the diagnosis of Asperger syndrome say they feel a loss of identity and worry about a loss of services.

Autistic preschoolers may get too little therapy and too much medication, according to a new study.

Robert Schultz hopes to use technology to change how autism is studied, diagnosed and treated.

Cut off from clients by the pandemic, clinicians are turning to video conferencing and other technologies to diagnose children with autism.

Doctors often conflate autism and intellectual disability, and no wonder: The biological distinction between them is murky. Scientific progress depends on knowing where the conditions intersect — and part ways.

A new blood test can identify within seven hours whether a person carries the genetic mutation underlying fragile X syndrome.

Individuals with mutations in an autism gene called TRIO may have a range of conditions, including intellectual disability and anomalous head size.