With the largest study of its kind, the Autism Speaks Baby Siblings Research Consortium has further laid to rest the longstanding idea that an abnormally large infant head size is an early sign of autism spectrum disorder (ASD). read more
Studies that measure head circumference, which is a surrogate for brain size, have yielded more mixed results. Last year, Raznahan led a review of studies that tracked head size in children with autism over time. read more