Seen around the Web today:
- Speaking More Than One Language Could Sharpen Your Brain
- Dementia delayed by speaking a second language
- Speaking two languages is better for your brain than Sudoku
- Phonological competition in monolinguals and bilinguals
From one of the articles:
"Speaking more than one language is thought to lead to better development of the areas of the brain that handle executive functions and attention tasks, which may help protect from the onset of dementia."