NEW YORK - WHETHER it's around the dinner table or just in front of the TV, US families say they are spending less time together.

The decline in family time coincides with a rise in Internet use and the popularity of social networks, though a new study stopped just short of assigning blame.

The Annenberg Centre for the Digital Future at the University of Southern California is reporting this week that 28 per cent of Americans it interviewed last year said they have been spending less time with members of their households. That's nearly triple the 11 per cent who said that in 2006.

These people did not report spending less time with their friends, however. Michael Gilbert, a senior fellow at the centre, said people report spending less time with family members just as social networks like Facebook, Twitter and MySpace are booming, along with the importance people place on them.

Meanwhile, more people say they are worried about how much time kids and teenagers spend online. In 2000, when the centre began its annual surveys on Americans and the Internet, only 11 per cent of respondents said that family members under 18 were spending too much time online. By 2008, that grew to 28 per cent.

In the first half of the decade, people reported spending an average of 26 hours per month with their families. By 2008, however, that shared time had dropped by more than 30 per cent, to about 18 hours.

The advent of new technologies has, in some ways, always changed the way family members interact. Cell phones make it easier for parents to keep track of where their children are, while giving kids the kind of privacy they wouldn't have had in the days of landlines.

Television has cut into dinner time, and as TV sets became cheaper, they also multiplied, so that kids and parents no longer have to congregate in the living room to watch it.

But Mr Gilbert said the Internet is so engrossing, and demands so much more attention than other technologies, that it can disrupt personal boundaries in ways other technologies wouldn't have.

Likely because they can afford more Web-connected gadgets, higher-income families reported greater loss of family time than those who make less money. And more women than men said they felt ignored by a family member using the Internet. -- AP