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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute.

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Are you listening to this podcast while you drive?

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Then texting your friends about it?

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Well, don't do that. The texting, I mean.

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Because a new study shows that, even if you're using a hands-free device, sending or receiving electronic messages can prove a major distraction.

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That's according to research sponsored by the AAA Foundation for Traffic Safety.

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More and more car makers are equipping their vehicles with gadgets that allow you to interact with electronics, from checking your GPS to updating your Facebook page.

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Many of these features are increasingly voice-activated,

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so you can keep your eyes on the road and your paws at 10 and 2.

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But hands-free isn't always risk-free.

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Researchers measured drivers' brain activity as they engaged in common tasks while behind the wheel,

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like listening to an audio book, talking on the phone or responding to a voice-activated email system.

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And they found that calling was a challenge, but that corresponding requires serious mental bandwidth, even without the use of fingers.

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Voice recognition-texting slowed drivers' reaction times and made them miss seeing things right in front of them.

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And that kind of miss can lead to a hit.

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Thanks for the minute, for Scientific American's 60-Second Science. I'm Karen Hopkin.

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