Intriguing. Intelligence: Nature outpaces nurture as kids get older by Andy Coghlan in the July 18th, 2009 edition of New Scientist.
No one knows why the input from genes should increase with age, but Plomin suggests that as children get older, they become better at exploiting and manipulating their environment to suit their genetic needs. "Kids with high g will use their environment to foster their cognitive ability and choose friends who are like-minded," says Plomin. Children with medium to low g may choose less challenging pastimes and activities, further accentuating their genetic legacy.
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