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This is Scientific American 60-Second Mind, I'm Christie Nicholson. Got a minute?

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Do you tend to get stressed out behind the wheel?

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That might not be a bad thing.

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Researchers discovered that teenager drivers who have a high sensitivity to stress actually have lower rates of car accidents than their mellow friends.

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Car crashes are the leading cause of death for teenagers,

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so teen driving is a legitimate public health issue that deserves a lot of study.

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To create a stressful situation in the lab, scientists administered a math test to 40 teenagers, all of whom had recently gotten their drivers' licenses.

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The researchers measured the teens' level of the stress hormone hormone cortisol after the math quiz.

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The higher the cortisol level, the more sensitive an individual is to a pressurized situation.

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The researchers then tracked the teens for 18 months.

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And cameras mounted inside their cars documented their driving behavior.

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Turned out that the teens who had a lower response to stress actually had higher rates of crashes and near crashes than did those with higher stress sensitivity.

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Calm confidence can be a valuable attribute in some situations.

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But behind the wheel perhaps the safer teen driver is just a bit jangled.

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Thanks for the minute, for Scientific American 60-Second Mind. I'm Christie Nicholson.

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