Camouflaged Cats That Are Hard To Find

COMMENTS Are you in a period of high stress?  Those rough patches can measurably dent your ability to concentrate.  In one study, researchers tested a group of Marine reservists getting ready for Iraq. The test involved clicking a space bar whenever you saw a digit, but ignoring any 3s. Between the beginning of the tough pre-deployment period and the end, the Marines’ scores dropped dramatically.  A comparison group of civilians beat them easily.