A cannabis gel may ease features of fragile X syndrome, omega fatty acids show promise for autism in two trials, and oxytocin reinforces social behaviors through the brain’s reward pathway.

Eric Courchesne is known for his findings on brain size in autism. But the roots of his long career trace back to his own childhood disability.

The evidence linking autism and maternal infections grows, special neuron recipes are in development, a CRISPR pioneer envisions unicorns, and 23andMe delivers empathy data.

A minority of boys with autism have brains that are unusually large relative to their bodies — a trait tied to regression and intellectual disability.

Peruse our picks for the best science photos published on Spectrum this year.

Mice missing one copy of a top autism gene show many of the features seen in people with the mutation — but not social deficits.

The brain enlargement commonly seen in toddlers with autism may persist into adolescence and adulthood.

Cells derived from the skin of boys and men with autism share a host of unusual characteristics.

Techniques used in behavioral interventions could help scientists scan the brains of children who have both autism and intellectual disability.

Too many or too few copies of a segment of chromosome 16 alters the three-dimensional organization of DNA, and affects hundreds of related genes.