"In some of my own research, students who talk on their cell phones more to close friends report feeling entrapped by the always-on nature of their mobile device," Hall said.
"They get the good part -- feeling close to and well connected to friends, a priority for young women especially," he said. "But [they get] the bad part too -- feeling trapped and guilty and unable to switch off."
The American Academy of Child & Adolescent Psychiatry has tips for parents about social networking and kids.
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