what age do children show signs of autism
The children's social interaction, communication, and play behaviors were evaluated at ages 14, 18, 24, 30, or 36 months of age. At each assessment, researchers noted any significant signs of delay or impairment that might be a sign of autism.
Children with a sibling already diagnosed with autism are known to be among those at greatest risk of developing the disorder. The current study included 25 high-risk children who met criteria for autism at 3 years of age, matched with 25 low-risk peers who were developing normally. It was conducted at the UC Davis MIND Institute and the University of California, Los Angeles.