Brain-training games remain unproven, but research shows what sorts of activities do benefit cognitive functioning
- Written by Ian McDonough, Associate Professor of Psychology, Binghamton University, State University of New York

Some 2.3 million of U.S. adults over 65 – more than 4% – have a diagnosis of dementia. But even without a diagnosis, a certain amount of cognitive decline is normal as age sets in.
And whether...