Intelligence doi:10.1016/j.intell.2008.10.005
A genetic analysis of brain volumes and IQ in children
Marieke van Leeuwen et al.
Abstract
In a population-based sample of 112 nine-year old twin pairs, we investigated the association among total brain volume, gray matter and white matter volume, intelligence as assessed by the Raven IQ test, verbal comprehension, perceptual organization and perceptual speed as assessed by the Wechsler Intelligence Scale for Children-III. Phenotypic correlations between the brain volumes and intelligence traits ranged between .20 and .33. Processing speed and brain volume did not correlate. The relation between brain volume and intelligence was entirely explained by a common set of genes influencing both sets of phenotypes.
Link
4 comments:
So Neanderthals, with brain volume larger than the average modern human, were more intelligent than us?
Probably.
Their big brains, big bones, and heavy muscles were also much more expensive.
I think the economy version of man won out. :)
NO because their neo cortex was not as dense, not as complex; they had more of the regions of brain that we call 'old cortex', ie limbic etc. The inside of their skulls shows far fewer folds in the cortex. So they had bigger regions of the brain that were more primitve as well. Its more about how bug the frontal cortical regions are than brain volume per se. A huge cerebellum and amygdala wont make you smart.
how big the frontal cortex is, not how 'bug' lol
Post a Comment