They bring their cell phones to bed with them. They admit to texting while driving. They're almost certain to have a profile on social networking sites like MySpace, Facebook or Twitter.

You likely already know them, but in case you don't, meet a majority of the "Millennials," the generation born after 1980 and "the first generation to come of age in the new millennium," according to the Pew Research Center.

The center, which has studied that age group's behaviors since 2006, calls them "history's first 'always connected' generation" in a new report, "Millennials: A Portrait of Generation Next."

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In a survey done last year, Pew's Internet & American Life Project said a third of teens ages 16 and 17 said they have texted while driving and 48 percent of teens ages 12 to 17 said they have been in a car when the driver was texting.