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Multitasking Is a Myth

Imaging shows brain quickly switches among tasks instead

By Harry Kimball,  Newser Staff

Posted Oct 4, 2008 9:33 AM CDT

(Newser) – Pull your ears away from that cell phone: Multitasking is a myth. New research shows we can’t really concentrate on two things at once; rather, the executive functions of the brain sweep quickly between multiple tasks. It’s thought that survival and the hunt made this rapid refocusing of attention an evolutionary boon. NPR checked in with researchers studying the phenomenon.

“People can't multitask very well, and when people say they can, they're deluding themselves," said an MIT neuroscientist. At the University of Michigan, MRI images show the brain's spritely back-and-forth when presented with multiple tasks. While we can’t truly think of two things at once, we can prioritize as the brain zips between them. That’s why we’ve “become dominant on the planet,” says one researcher.

John McCain, on the phone with Blackberry in hand.
John McCain, on the phone with Blackberry in hand.   (AP Photo)
An Italian priest talks on the phone beside his computer.
An Italian priest talks on the phone beside his computer.   (AP Photo)
Former presidential hopeful Mitt Romney reads a newspaper and takes a cell phone call.
Former presidential hopeful Mitt Romney reads a newspaper and takes a cell phone call.   (AP Photo)
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Think about writing an e-mail and talking on the phone at the same time. Those things are nearly impossible to do at the same time. That's because of what's called interference between the two tasks. - Earl Miller, MIT

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