The hallmark autism trait has multiple facets, Uljarević and his colleagues have found.

The leader of the Frank Porter Graham Child Development Institute talks about what drew him into the autism field, and his departure from — and return to — the University of North Carolina at Chapel Hill.

Anxiety and other challenges autistic children experience may stem from an increase in social-communication issues and a decrease in repetitive behaviors from ages 6 to 11.

Synaptic changes in the brain region could drive a core trait of fragile X syndrome, a new mouse study suggests.

A protective pathway that pauses protein synthesis is muted in a mouse model of fragile X syndrome, according to a new study.

The findings in rhesus macaque monkeys may provide clues to sex differences in the heredity of social behavior in people.

Cells from people with fragile X syndrome overproduce — but don’t accumulate — proteins. New work suggests that excessive protein breakdown may account for this discrepancy, and explain some of the syndrome’s traits.

The measure breaks the behaviors down into eight distinct subdomains — categorization that could prove useful for clinical trials, its creator says.

Having an infection during pregnancy is tied to a small increase in the chances of having an autistic child, but the connection may not be causal.

This month’s newsletter explores the pandemic’s effects on autism rates, trends in co-occurring mental health conditions, and the impact of intranasal oxytocin.