Good news for worried parents: All those hours their teenagers spend socializing on the Internet are not a bad thing, according to a new study by the MacArthur Foundation.

“It may look as though kids are wasting a lot of time hanging out with new media, whether it’s on MySpace or sending instant messages,” said Mizuko Ito, lead researcher on the study, “Living and Learning With New Media.” “But their participation is giving them the technological skills and literacy they need to succeed in the contemporary world. They’re learning how to get along with others, how to manage a public identity, how to create a home page.”

The study, conducted from 2005 to last summer, describes new-media usage but does not measure its effects.

“It certainly rings true that new media are inextricably woven into young people’s lives,” said Vicki Rideout, vice president of the Kaiser Family Foundation and director of its program for the study of media and health. “Ethnographic studies like this are good at describing how young people fit social media into their lives. What they can’t do is document effects. This highlights the need for larger, nationally representative studies.”