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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.

Older workers bring valuable knowledge to the job

In the workplace, age matters - but hiring or promoting based on age-related mental abilities can be a minefield, according to new research. Older executives bring valuable skills to the job, such as higher "crystallized intelligence," which includes verbal ability and knowledge born of experience, according to a study. But compared with their younger counterparts, older executives show marked declines in "fluid intelligence," which involves the ability to reason, the research found.
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