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Brain size and smarts are, to some extent, genetic — and now, a team of
more than 200 researchers has uncovered specific genes that are linked
to both brain volume and IQ.Though scientists have suggested bigger brains are "smarter," this
study is the strongest case yet for a genetic connection to brain size
and to IQ. Of course, brain size is not 100 percent correlated with a
person's intelligence, and other factors, including connections between brain cells and even a person's experiences, play roles. more...
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