Signs & Symptoms

Rhesus macaques that are drawn to other monkeys’ faces in videos also tend to be highly social with their peers.

A specially made ‘decoy’ protein prevents an immune molecule from crossing the placenta; the strategy may prevent the brain changes that lead to autism.

A recalibrated version of a widely used test for autism may accurately reflect autistic children’s development as they grow and become verbal.

Women whose children are severely autistic have lower serotonin levels than do those whose children have mild or moderate autism traits.

Routine screening of toddlers for autism in China could lead to much earlier diagnosis of the condition.

The motion perception difficulties seen in people with fragile X syndrome, a leading cause of autism, may stem from a faulty visual circuit.

In autism research, as in other fields, small sample sizes can lead to false findings. The size of the sample needed for statistical significance depends on the type of study.