Just a few brain workouts can have long-lasting benefits in seniors, study says

Older adults who receive as few as 10 sessions of mental training show improvements in reasoning and speed of processing skills 10 years later.

“Our prior research suggested that the benefits of the training could last up to five years, or even seven years, but no one had ever reported 10-year maintenance in mental training in older adults,” says Michael Marsiske, associate professor of clinical and health psychology at the University of Florida.

http://www.washingtonpost.com/national/health-science/just-a-few-brain-workouts-can-have-long-lasting-benefits-in-seniors-study-says/2014/01/17/e2fc3b7a-7e1b-11e3-9556-4a4bf7bcbd84_story.html