Today's BBC News has an article about how earphones and iPods are changing the way people interact with their environment and each other. It's based on research by Dr. Michael Bull of the University of Sussex.

"Donning a pair of earbuds also grants a certain amount of licence. They let listeners become witnesses without the risk of getting too involved. The earphones absolve them of some responsibility.

Music players put you in control

Some women use earphones to deflect unwanted attention, finding it easier to avoid responding because they look already occupied.

In the same way, removing earphones when talking to someone sends a strong message about how interested one is in what is being said. It pays the speaker a compliment.

Digital players in general and the iPod in particular are having a dramatic effect on the way people behave, he says. He has interviews lined up with hundreds more users to see what further lessons can be learnt and what possible impact the technology might have on people's lives as it develops further."

Wired Magazine has also done an interview with Dr. Bull on the topic.