(I have my own theory, which is that a large brain increases the risk of ADHD rather than autism—a larger flow of thoughts and ideas requires more executive function to manage, and therefore more executive function is required to achieve the same attention span—but that ADHD is a kind of multiplier for autism, because social situations are more challenging to navigate if you can’t reliably stay focused on the social interaction you’re having.)
There is a parallel strain of argument for the former:
- https://www.tinygnomes.com/qwiki.cgi?mode=previewSynd&uuid=B...
- https://medicalxpress.com/news/2024-06-brain-overgrowth-dict...
(I have my own theory, which is that a large brain increases the risk of ADHD rather than autism—a larger flow of thoughts and ideas requires more executive function to manage, and therefore more executive function is required to achieve the same attention span—but that ADHD is a kind of multiplier for autism, because social situations are more challenging to navigate if you can’t reliably stay focused on the social interaction you’re having.)