Do children with autism have unusually large brains?The answer depends entirely on which study you choose to trust.This debate over head size in autism continued yesterday at the International Meeting for Autism Research in Chicago.Based on brain scans of 2- to 4-year-old boys with autism, neuropsychologist Heather Hazlett of the University of North Carolina says kids with autism have slightly a larger caudate nucleus — a region important for learning and memory — than do healthy controls, and a much larger amygdala, the brain region needed to process emotions.Read more at...SFARI, May 2009.