Employ­ees, Mea­sure Your­selves (Wall Street Journal): - “For exam­ple, there’s Lumos­i­ty, from Lumos Labs Inc., an online sys­tem that serves up games employ­ees can play dur­ing down­time at work. … The dif­fer­ence is track­ing. The games offer a score­card of your per­for­mance and let you fol­low changes in per­for­mance over time, so you can see…