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As for multitasking devices, social scientists and educators are just beginning to assess their impact, but the researchers already have some strong opinions. The mental habit of dividing one's attention into many small slices has significant implications for the way young people learn, reason, socialize, do creative work and understand the world. Although such habits may prepare kids for today's frenzied workplace, many cognitive scientists are positively alarmed by the trend. "Kids that are instant messaging while doing homework, playing games online and watching TV, I predict, aren't going to do well in the long run," says Jordan Grafman, chief of the cognitive neuroscience section at the National Institute of Neurological Disorders and Stroke (NINDS). Decades of research (not to mention common sense) indicate that the quality of one's output and depth of thought deteriorate as one attends to ever more tasks. Some are concerned about the disappearance of mental downtime to relax and reflect. Roberts notes Stanford students "can't go the few minutes between their 10 o'clock and 11 o'clock classes without talking on their cell phones. It seems to me that there's almost a discomfort with not being stimulated--a kind of 'I can't stand the silence.'"
Gen M's multitasking habits have social and psychological implications as well. If you're IMing four friends while watching That '70s Show, it's not the same as sitting on the couch with your buddies or your sisters and watching the show together. Or sharing a family meal across a table. Thousands of years of evolution created human physical communication--facial expressions, body language--that puts broadband to shame in its ability to convey meaning and create bonds. What happens, wonders UCLA's Ochs, as we replace side-by-side and eye-to-eye human connections with quick, disembodied e-exchanges? Those are critical issues not just for social scientists but for parents and teachers trying to understand--and do right by--Generation M.
YOUR BRAIN WHEN IT MULTITASKS
ALTHOUGH MANY ASPECTS OF THE networked life remain scientifically uncharted, there's substantial literature on how the brain handles multitasking. And basically, it doesn't. It may seem that a teenage girl is writing an instant message, burning a CD and telling her mother that she's doing homework--all at the same time--but what's really going on is a rapid toggling among tasks rather than simultaneous processing. "You're doing more than one thing, but you're ordering them and deciding which one to do at any one time," explains neuroscientist Grafman.