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The Truth About Multitasking. How Your Brain Processes Information

Multitasking helps you get more done faster. The only thing is, it doesn't. When you perform multiple tasks that each require some of the same channels of processing, conflicts will arise between the tasks, and you're going to have to pick and choose which task you're going to focus on and devote a channel of processing to it.

David Meyer, a cognitive scientist has been at the forefront of research for several decades on how the brain processes information and copes with multitasking. He has investigated the brain's speed, accuracy and memory in information processing. Meyer's work has helped demonstrate that humans have distinct bandwidth challenges, which can make multitasking problematic. It turns out the brain's ability to process information is limited in a variety of ways -- from processing channels to limits on data volume, velocity and working memory -- that confound true, simultaneous task actions.

Counter to common belief, you can't do two cognitively complicated tasks at once, Meyer says. When you're on the phone and writing an e-mail at the same time, you're actually switching back and forth between them, since there's only one mental and neural channel through which language flows. If you have a complicated task, it requires all your attention, and if you're trying to spread your attention over multiple tasks, it's not going to work.

That's heresy in a time-urgent world with the attention span of a macaque on crack. Although multitasking is not only getting more prevalent, but it's also very often highly inefficient and can be dangerous to your health. Even the most adept multitasker will crash and burn trying to resolve simultaneous conflicting demands. That means you could wind up sending the wrong e-mail; blow an account; have a "brownout, in which too much access to the intellectual or logical grid shuts down critical thinking or worse, find yourself in a truly hazardous situation, such as driving while using a cell phone.

When you're driving, you have to use the language channel to talk, read signs, and plan your next move. If you're trying to have a cell phone conversation while you're doing that, either the phone conversation will suffer or the driving.Growing number of auto accidents caused by business people sending work texts from behind the wheel. The conflicts triggered by incessant multitasking can set off chronic stress and slow you down, shredding productivity. In fact, trying to complete two or more tasks at once can take 50 percent more time or longer, depending on the complexity of the tasks.

The good news is that there is hope for the attention-span-challenged, in the form of self-regulation through better time management and scheduling. If you're disciplined enough, you can map out the usage of your time in a way that minimizes your exposure to interruptions.

Entrepreneurs are some of the most compulsive multitaskers--you'd be wise to cool the scatterbrain jets and focus.If you want to be a creative entrepreneur, you ought to be setting aside large chunks of time where you just think.

Remember-Einstein was not multitasking when he was dreaming up the special and general theories of relativity.

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