A few years ago researchers from Harvard Business School carried out a remarkable study into likeability.

They waited until it was raining, and then approached people in the street and asked to borrow their mobile phone.

Half of the time the researchers said, " I'm sorry about the rain."

When they didn't mention the rain they were offered the phone just 9 % of the time.

But when they mentioned it, this figure rose to an amazing 47 %.

Why?

Because apologizing for something outside of your control, such as the weather or a transport delay, makes you seem especially trustworthy and caring.

So next time you want to be liked, remember to apologize about the rain.