The number of people in a study, the proportion of male and female participants, and many other factors can affect research on sex differences in autism, says Thomas Frazier.

Two autism screens are better than one at identifying toddlers who need specialized clinical services.

The growing prevalence of autism is no different from that of other neurodevelopmental disorders, finds a study of more than 4.5 million people in four countries.

Watch the complete replay of Jeremy Veenstra-VanderWeele’s webinar on conceptual pathways for developing effective autism drugs.

If inherited risk for autism is 50 percent, does that make the remaining half of risk environmental? Scientists clarify a large population study.

Taking a page from astronomy’s playbook, researchers have developed a way to take dramatically clear pictures of the inner workings of a zebrafish brain.

Middle-school girls are more willing to include their classmates with autism in social activities after completing an awareness program.

The cortex, the outer layer of the brain, grows rapidly in early childhood in people with autism and thins differently with age than it does in controls, two new studies report.

A teenage girl with Rett syndrome has a mutation in WFR45, a gene that is mutated in people who abruptly lose motor and mental skills in adulthood, according to a study published 13 March in the Journal of Human Genetics.

People with autism tend to carry mutations that duplicate or delete several genes at once, according to a large study published 1 May in the American Journal of Human Genetics.