My 3 year old has ASD. I'm interested the finding about disproportionate megalencephaly, as his head is pretty big (but he's also rather tall). Suppose I wanted to see if he falls into the >1.5 SD cerebral volume/height bucket. Is there a way to meaningfully approximate it with his head circumference and height?
The correlation between head size and brain size after accounting for height (which is positively related to brain size) is not as strong as one would think.
