I believe, as did Aaliyah, that age ain't nothing but a number.

Memory responds to incentives:

Langer had already undertaken a couple of studies involving elderly patients. In one, she found that nursing-home residents who had exhibited early stages of memory loss were able to do better on memory tests when they were given incentives to remember — showing that in many cases, indifference was being mistaken for brain deterioration. In another, now considered a classic of social psychology, Langer gave houseplants to two groups of nursing-home residents. She told one group that they were responsible for keeping the plant alive and that they could also make choices about their schedules during the day. She told the other group that the staff would care for the plants, and they were not given any choice in their schedules. Eighteen months later, twice as many subjects in the plant-caring, decision-making group were still alive than in the control group.