It only takes practice and a slight change in perspective.

Time-based prospective memories, though, depend more on how good we are at generating cues for ourselves.

The game involves participants remembering to carry out daily tasks and is designed to reveal prospective memory problems.

It' s only a matter of time before others join in, including some forward-looking travel companies.

The study, published in the British Journal of Cancer, is part of a long-term international study, the European prospective investigation into cancer and nutrition (Epic).