““Today, the “mental workout” has gained great currency in the popular imagination. Brain gyms and memory boot camps are a growing fad, and brain training software was a $265 million industry in 2008, no doubt in part because of research that shows that older people who keep their minds active with crossword puzzles and chess can stave off Alzheimer’s and progressive dementia, but mostly because of the Baby Boomer generation’s intense insecurity about losing their marbles.””
