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

Children with social difficulties are more likely than those without to develop problems with eating by age 14.

Researchers and clinicians need fast, effective tools to measure quality of life in autistic people.

Infants with low levels of the hormone vasopressin in their cerebrospinal fluid may be more likely to later be diagnosed with autism.

Emotion control eludes more girls than boys with autism, according to a new study of young people hospitalized for psychiatric issues.

A study that followed 126 autistic people in England from their preteen years to age 23 found little improvement in their behavioral and emotional problems.

Standardized tests can reliably assess memory, language ability, executive function and other traits in people with intellectual disability linked to autism.

Toddlers who sleep poorly or overreact or underreact to sensory stimuli have more repetitive behaviors and other autism traits later in childhood.

In younger siblings of children with autism, insecure attachments to their caregivers increases the odds of being diagnosed with autism.

Researchers use a variety of measures and definitions to characterize autistic children who speak few or no words.