Mice with a mutation in a top autism gene may have altered levels of certain gut bacteria; feeding the mice one of these bacterial species eases some of their troubles.

Two new parent questionnaires could help clinicians identify autism in babies and in members of racial or ethnic minority groups.

The latest manual of international disease codes is out, a franchise claims to have an autism cure, and two reports diverge on the validity of the social-motivation hypothesis.

People with mutations in SHANK3 have milder features than do those missing a chunk of DNA that includes the gene.