If you want to get something done, you need to do more than turn your mobile phone off. You should also put it out of sight.
Researchers have found that the mere presence of a handset is distracting - even if it is not your own.
And they are likely to sidetrack you, even if they are not ringing or 'pinging' with text messages.
People asked to carry out electronic tests of their attention spans were found to perform worse when a mobile phone was present than other people performing in the presence of a paper notepad. Scientists from Hokkaido University in Japan said that their findings show that it is harder to concentrate when one of the electronic gadgets is present.
The effect was most marked on people who are not regular users of mobile phones.