Elizabeth Berry-Kravis has spent decades uncovering molecular clues to fragile X syndrome and crafting trials of treatments. Her efforts are paying off.

Next-generation machine-learning tools are poised to upend how scientists study behavior in animal models of autism — and not everyone is happy about it.

Autistic boys and men show notable differences in brain development, according to magnetic resonance imaging scans taken over a 16-year period.

Researchers have uncovered more than 1,200 new protein-protein interactions involving proteins coded for by autism-linked genes.

Children with autism traits tend to show agitation, excitability, decreased sleep and other mild signs of mania in adolescence; the association is higher in identical twins than fraternal twins, suggesting that genetics plays a role.

Multiple types of bias and an overreliance on caregiver reports have clouded research on the effectiveness of early interventions for autism for nearly three decades.

The largest-yet study of genetic data from autistic people has identified 255 genes associated with the condition.

People who experience an autism-specific form of anxiety also tend to have an unusually small amygdala, a brain region associated with emotion processing and fear, according to a new unpublished study.

The investigational drug arbaclofen may right an imbalance between inhibitory and excitatory signaling in the animals’ brains.