Existing genome scans do not detect many of the DNA variants that underlie behavioral problems.

Two new methods allow scientists to swap single bases in DNA or RNA sequences.

More than 5 percent of mutations thought to have arisen spontaneously in a child with autism may in fact be inherited.

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.

Mutations that appear in only some of the body’s cells contribute to autism in about 4 percent of people with the condition.

People with autism aren’t easily surprised, the social camouflage some girls and women with autism use may preclude diagnosis, and autism-related genes are rooted deep in human ancestry.

A new method can help researchers and clinicians gauge the likelihood that a gene is associated with a particular condition.