The study appears in the January issue of Developmental Psychology.
Researchers assessed the friendship quality and popularity of 172 13- to 14-year-olds, and then, eight years later, "friended" the study participants on their Facebook and MySpace pages to examine their interactions and friendship quality in those domains.
The research team found that the youths who were better adjusted in their early teens were more likely to use social media in their early 20s, regardless of age, gender, ethnicity or parental income, and that, overall, the patterns of friendship quality and behavioral adjustment as early teens continued into early adulthood.
"We're finding that the interactions young adults are having on their Facebook and MySpace pages are more similar to than different from the interactions they have in their face-to-face relationships," lead author Amori Yee Mikami said. "So parents of well-adjusted teens may have little to worry about regarding the way their children behave when using social media. It's likely to be similar positive behavior."
However, Mikami warns, teens with behavioral problems or who have difficulty maintaining positive friendships may be more likely to use social media sites in negative ways, just as they may behave negatively in their face-to-face relationships. Negative use of the sites would include using excessive profanity, making hostile remarks or aggressive gestures, or posting nude photographs of themselves or others. They also have fewer supportive relationships with their Facebook and MySpace friends. But this group also is less inclined to use social media at all.
Overall, 86 percent of the youths in Mikami's study used the social media Web sites, which parallels the national average, she said.
"Use of Facebook and MySpace is really pervasive among this age group, so it's understandable that young people would want to be connected with their peers in this way; it's an extension of the relationships they already share," Mikami said. "So parents should try to stay involved with their children and make an attempt to understand their online world in the same way they would want to understand any other aspect of their lives.
Citation: Mikami et al., 'Adolescent peer relationships and behavior problems predict young adults’ communication on social networking websites', Developmental Psychology, January 2010, 46 (1), 46-56