Posit Sci­ence has just start­ed offer­ing good infor­ma­tion on Brain Fit­ness in their site. Includ­ing a good arti­cle on the “Cross­word myth”, which we touched on 2 weeks ago with Brain Coach Answers: Aren’t cross­words and sudoku suf­fi­cient brain exer­cise?. A num­ber of sites and blogs, includ­ing us, may slight­ly dis­agree with their claim that “This…