Brain-train claim dispute: Claims that electronic brain training devices help to significantly boost memory have been disputed by scientists, consumer magazine Which?has reported.

It gathered a group of experts to examine the claims made by manufacturers of a number of popular devices, but found no scientific evidence to back up claims that brain trainers keep minds in shape.

Which?editor Martyn Hocking said users should think again if under the illusion the trainers "are scientifically proven to keep their minds in shape".