The Washington Post argues the “cognitive fitness market” is more hype than science. “You may get better with practice at matching pictures of ice cream cones or frogs from rapidly changing images or mastering obscure facts about famous people,” writes Beth Baker. “(James Joyce was afraid of dogs.) But whether that translates into brain protection — or confers benefits beyond those offered by square-dancing, eating blueberries or simply yukking it up with friends — is anybody’s guess.”