Whether you're a slacker or a go-getter could depend on the chemicals your brain releases.
According to a brain-imaging study, people who released dopamine in the part of the brain that influences reward and motivation were willing to work hard.
On the other hand, slackers had high dopamine levels in the part of the brain that influences emotion, and risk perception.
Researchers at Vanderbilt University hope their findings will help treat attention-deficit disorder, and depression.
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