Men are less likely to talk than women with 54% of women having had a conversation compared to 37% of men.
Derailed Train Causes Chaos on Tube
An investigation has started after a de-railed train on the London Underground caused disruption for commuters.
No services were able to run on the Central Line between White City and Marble Arch for more than 12 hours following the derailment at Holland Park on the evening of Monday 20 April 2015.
There was severe disruption on the rest of the line and platforms became so packed that Wanstead and South Woodford stations had to be closed during the morning rush hour.
Many passengers switched to other lines, only to find trains there jammed full as well.
With their line disrupted, tweeting passengers at least came up with a nice line in irony. Jessie Moore wrote: "Nothing like Central line delays to brighten up your Tuesday morning."
Charlotte Jefferson tweeted: "Worst start to the day! Cheers Central line."
Earlier in the morning there had also been severe delays for a time on the Hammersmith & City line due to a signal failure at Plaistow.
It was the second successive day of disruption on the Underground. Three Tube lines suffered delays in the morning rush-hour yesterday and there have been a number of other mornings lately when services have been disrupted.
Central line operations director Peter McNaught said: "I apologise to customers for the disruption they've suffered this morning on the Central line.
"This is due to the part-suspension of the line which was caused by a derailed engineering train during the night."
The Rail Accident Investigation Branch is looking into the derailment.
Mick Cash, general secretary of the RMT transport union, said: "Our officials are seeking to obtain further information on the serious derailment last night.
"While the union seeks to establish the facts, the incident once again throws under the spotlight the ever present issue of safety on the Underground for both staff and passengers alike."
A career in the media and entertainment industry starts here...
A man has been fined £1,800 for flying drones over Parliament, near Buckingham Palace and over football stadiums.
Government to investigate after some restaurants accused of withholding tips
Most Viewed Pictures On Heart
Recently Played Tracks
Now playing: The best feel good music
Deposit £10 to get a £40 Welcome Bonus - That's £50 to play bingo, slots and more!*
Over 50 tracks to make you feel-good. New album out now...
Find your local four day weather report here.
What's happening on the roads where you are?
Make Heart the soundtrack to your day and you could be a winner with great prizes up for grabs throughout the day.
Get some great ideas on how to advertise your business on radio, online and on mobile.