Hack your commute: Don’t buy into brain training

Cast your eye around any commuter train and you will almost certainly see more than one person engaged in a sudoku puzzle, crossword or similar test of mental acuity.
Some may even have shelled out for a subscription to play brain training games – apps and websites that offer simple tests of cognition professing to boost intelligence or ward off the onset of dementia.
But the scientific evidence for the efficacy of brain training remains highly contested.
In 2014, 70 leading neuroscientist