The researcher Timothy Salthouse suggests that if people are mentally active all of their lives, they enter late adulthood with

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Timothy Salthouse's research suggests that lifelong mental activity builds a "cognitive reserve," enabling individuals to maintain higher levels of mental function into late adulthood. This concept implies that the brain can compensate for age-related changes by relying on this reserve, rather than suggesting an increase in IQ or specific learned skills.

The Researcher Timothy Salthouse Suggests That If People Are Mentally