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Intelligence - nature or nurture? Researchers find a gene for intelligence and also that a bigger brain matters, yet other recent articles show how motivation affects learning.

Decreases in short-term memory, IQ, and altered brain metabolic ratios in urban apolipoprotein ?4 children exposed to air pollution

A new study heightens concerns over the detrimental impact of the apolipoprotein E (APOE) ?4 allele -- the most prevalent genetic risk for Alzheimer?s disease -- upon cognition, olfaction, and metabolic brain indices in healthy urban children and teens.
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