Autism and attention deficit hyperactivity disorder often coincide, but the search for common biological roots has turned up conflicting evidence.

Common genetics may help forge social ties, a nonspeaking woman with autism hosts “The Late Show,” and the mix of bacteria in the gut may relate to brain structure.

Watch the complete replay of James McPartland discussing the need for clinically useful biomarkers for autism.

Scanning the brains of a single individual over months to years may illuminate daily fluctuations in activity relevant to conditions such as autism, says Russell Poldrack.

This year’s list of top papers highlights nuances in the genetics of autism and new leads on early treatment.

We waded through the sea of autism studies published in 2017 and spotted several themes.

A software package identifies bundles of nerve fibers in brain-imaging data, revealing connections unique to people with autism.

An interview for diagnosing adults on the spectrum clears its first hurdle, a fragile X drug eases multiple features of the syndrome in a mouse model, and a brain bank chronicles the beautiful diversity of neurons.

After five days and more than 13,000 abstracts, the Society for Neuroscience annual meeting in Washington, D.C., has drawn to a close.

Young adults with autism who have intense sensitivity to taste show increased activation in social areas of the brain when they taste something sweet.