Evidence that brain aging studies did not control for learning and lifestyle

This is a fascinating look at how data science has reversed a common hypothesis driven meme.

http://newoldage.blogs.nytimes.com/2014/01/27/the-older-mind-may-just-be-a-fuller-mind/?_php=true&_type=blogs&emc=edit_tnt_20140127&tntemail0=y&_r=0