Programs claiming to "train your brain" are becoming increasingly popular as baby boomers head into their golden years, the researchers say. Even Nintendo has gotten into the game, with a program designed to lower your brain's "age" with repeated playing.


However, not all of these programs have been shown to work, they say. For those that do work, scientists' understanding of how and why they work is very limited. Worse yet, the older a person is and the less memory ability he or she has before training, the less likely that person is to show benefits.

"The bottom line is that in most memory training programs, the people who likely need training the most—those 80 and older and people with lower initial ability—improve the least," Lustig said.

The results of the study suggest that in order to improve memory, one needs not only to work hard, but work smart. People in their 60s and 70s used a strategy of spending most of their time on studying the materials and very little on the test, and showed large improvements over the testing sessions.


By contrast, most people in their 80s and older spent very little time studying and instead spent most of their time on the test. These people did not do well and showed very little improvement even after two weeks of training.

One of their conclusions: What matters for memory—and what seems to change as people get older—is not only how much time we spend on trying to remember something, but where we put our efforts.

more advanced age and lower education