From The Econ­o­mist: “Our primary goal is for our users to see us as a gym, where they can work out and keep mentally fit,” says Michael Scanlon, the co-founder and chief scien­tist of Lumos Labs. For $14.95 a month, subscribers to the firm’s Lumosity website get to play a selec­tion of online games designed to improve their cogni­tive perfor­mance. There are around 40 exer­cises avail­able, including “speed match”, in which players click if an image matches a previous one; “memory matrix”, which requires remem­bering which squares on a matrix were shaded; and “rain­drops”, which involves solving arith­metic prob­lems before the rain­drops containing them hit the ground. The puzzles are varied, according to how well users perform, to ensure they are given a suit­ably chal­lenging brain-training session each day. · Go to Commer­cial­ising neuro­science: Brain sells →