Boys who have autism-like social deficits at 2 years of age retain about the same level of social impairment when they reach age 20.

Two new studies suggest that people with autism don’t all have trouble detecting the motion of people and animals. What they do struggle with is picking up social information from bodies in motion.

Researchers have optimized an early social screening questionnaire to distinguish autism from other developmental disabilities in preschool-aged children.

Neurons in a mouse model of fragile X syndrome make more connections during a critical period in development compared with controls, but are slower to respond to signals.

Probiotic bacteria alleviate stress in healthy mice and modify the expression of receptors for a chemical messenger that inhibits signaling in the brain.

An adventure story about a boy with autism is making an appearance in a popular comic book.

The largest and most ambitious genome-sequencing project to date aims to identify rare variants and study their association to disease traits in 10,000 people.

Researchers have developed standard genetic reference samples that clinicians can use to diagnose Angelman and Prader-Willi syndromes, two disorders associated with the same chromosomal region.

Individuals with fragile X syndrome make slightly more eye contact in stressful social situations after taking oxytocin compared with placebo.

Nothing is known about how the brain changes in aging individuals with autism, according to a review published online 24 August in Gerontology. Nor do researchers know whether the core symptoms of the disorder improve, worsen or remain unchanged with age.