Aging isn't always about decline—nearly half of older adults in a major Yale study actually got sharper, stronger, or both over time. Credit: Shutterstock The research was supported by funding from the National Institute on Aging. oth physical and mental abilities. However, new research from Yale University paints a far more optimistic picture. The study found that many older adults actually improve over time, and their beliefs about aging may play an important role in those gains. Drawing on