A a larger brain surface before 12 months of age puts you at risk for autism

Scientists from more than 20 different institutions examined more than 300 infants. And came to the conclusion that hyperexpansion of the brain surface area, between 6 and 12 months of age, before brain volume overgrowth, usually observed between 12 and 24 months, is a early clue for detecting autism.
Early brain development in infants at high risk for autism spectrum disorder, Nature, 542, 348–351 (2017)