Thicker cerebral cortices in individuals is positively associated with higher intelligence.<ref>[http://cercor.oxfordjournals.org/content/17/9/2163 Relationships between IQ and Regional Cortical Gray Matter Thickness in Healthy Adults], Oxford Journals</ref> | Thicker cerebral cortices in individuals is positively associated with higher intelligence.<ref>[http://cercor.oxfordjournals.org/content/17/9/2163 Relationships between IQ and Regional Cortical Gray Matter Thickness in Healthy Adults], Oxford Journals</ref> |