By: Claudia Wallis, Time Magazine
Friday, March 24, 2006

Professor David Meyer is quoted in Time Magazine's March 27, 2006 issue

From the article:

It's 9:30 p.m., and Stephen and Georgina Cox know exactly where their children are. Well, their bodies, at least. Piers, 14, is holed up in his bedroom--eyes fixed on his computer screen--where he has been logged onto a MySpace chat room and AOL Instant Messenger (IM) for the past three hours. His twin sister Bronte is planted in the living room, having commandeered her dad's iMac--as usual. She, too, is busily IMing, while chatting on her cell phone and chipping away at homework.

By all standard space-time calculations, the four members of the family occupy the same three-bedroom home in Van Nuys, Calif., but psychologically each exists in his or her own little universe. ...

The Coxes are one of 32 families in the Los Angeles area participating in an intensive, four-year study of modern family life, led by anthropologist Elinor Ochs, director of UCLA's Center on Everyday Lives of Families. While the impact of multitasking gadgets was not her original focus, Ochs found it to be one of the most dramatic areas of change since she conducted a similar study 20 years ago. ...

...But the ability to multiprocess has its limits, even among young adults. When people try to perform two or more related tasks either at the same time or alternating rapidly between them, errors go way up, and it takes far longer--often double the time or more--to get the jobs done than if they were done sequentially, says David E. Meyer, director of the Brain, Cognition and Action Laboratory at the University of Michigan: "The toll in terms of slowdown is extremely large--amazingly so." Meyer frequently tests Gen M students in his lab, and he sees no exception for them, despite their "mystique" as master multitaskers. "The bottom line is that you can't simultaneously be thinking about your tax return and reading an essay, just as you can't talk to yourself about two things at once," he says. "If a teenager is trying to have a conversation on an e-mail chat line while doing algebra, she'll suffer a decrease in efficiency, compared to if she just thought about algebra until she was done. People may think otherwise, but it's a myth. With such complicated tasks [you] will never, ever be able to overcome the inherent limitations in the brain for processing information during multitasking. It just can't be, any more than the best of all humans will ever be able to run a one-minute mile."

Other research shows the relationship between stimulation and performance forms a bell curve: a little stimulation--whether it's coffee or a blaring soundtrack--can boost performance, but too much is stressful and causes a fall-off. In addition, the brain needs rest and recovery time to consolidate thoughts and memories. Teenagers who fill every quiet moment with a phone call or some kind of e-stimulation may not be getting that needed reprieve. Habitual multitasking may condition their brain to an overexcited state, making it difficult to focus even when they want to. "People lose the skill and the will to maintain concentration, and they get mental antsyness," says Meyer....

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For the entire article, visit the Time Magazine website at http://www.time.com/time/magazine/article/0,9171,1174696,00.html.