New research shows that differences in the brain development of autistic children are already visible in infants as young as 6 months old.
Researchers at four study sites nationwide used a type of MRI scan to look at brain development in the younger siblings of autistic children, who are known to be at higher risk for autism themselves.
Ninety-two children were scanned at 6, 12, and 24 months of age, while the children were sleeping.