A new study tries to, but unfortunately doesn’t, answer that question. Study: Brain Training Game Improves Executive Functions and Processing Speed in the Elderly: A Randomized Controlled Trial (PLoS ONE).
“Conclusions: Our results showed that playing Brain Age for 4 weeks could lead to improve cognitive functions (executive functions and processing speed) in the elderly. This result indicated that there is a possibility which the elderly could improve executive functions and processing speed in short term training. The results need replication in large samples. Long-term effects and relevance for every-day functioning remain uncertain as yet.” [Read more…] about Research: Does Nintendo Brain Age work as a brain training game?