(no subject)

[gusl]

http://www.psych.utoronto.ca/~reingold/courses/intelligence/cache/1198gottfred.html
The General Intelligence Factor, about what human intelligence is: the ability to do complex tasks. The following quote is about biological correlates of IQ:

In the past decade, studies by teams of researchers in North America and Europe have linked several attributes of the brain to general intelligence. After taking into account gender and physical stature, brain size as determined by magnetic resonance imaging is moderately correlated with IQ (about 0.4 on a scale of 0 to 1). So is the speed of nerve conduction. The brains of bright people also use less energy during problem solving than do those of their less able peers. And various qualities of brain waves correlate strongly (about 0.5 to 0.7) with IQ: the brain waves of individuals with higher IQs, for example, respond more promptly and consistently to simple sensory stimuli such as audible clicks. These observations have led some investigators to posit that differences in g result from differences in the speed and efficiency of neural processing. If this theory is true, environmental conditions could influence g by modifying brain physiology in some manner.
...
the heritability of IQ rises with age. It appears that the effects of environment on intelligence fade rather than grow with time.
...

which reminds me of Ramonsky's "I've Changed My Mind", where he says that brain development is seriously dependent on stimulation at a young age.

Comments

[mathemajician.livejournal.com]

Heh, I was reading some of her papers recently. They are quite nice, though I think that she, like the more famous Jensen, overstates how much consensus there is around Spearman's g factor approach to intelligence theory.