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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.
 

Diabetes, depression predict dementia risk in people with slowing minds

People with mild cognitive impairment are at higher risk of developing dementia if they have diabetes or psychiatric symptoms such as depression, finds a new review. Mild cognitive impairment is a state between normal aging and dementia, where someone's mind is functioning less well than would be expected for their age.
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