SSS 2009-05-22

（单词翻译）

This is Scientific American's 60-second Science. I'm Karen Hopkin.

If you ever got picked on in the schoolyard, you might have wished for some sort of superpower, like unbeatable speed or maybe just the ability to completely disappear. Now scientists at the College of Wooster in Ohio say that you might have had a skill you didn’t realize: the uncanny ability to hear a bully¹ coming.

An earlier study found that women hear approaching noises sooner than their bigger, brawnier male counterparts. Perhaps, the scientists thought, the same would hold true for scrawny specimens² versus³ the truly buff. So they had 50 volunteers listen to a tone that sounds like it’s moving toward them. The listeners pressed a button when it sounded like the tone arrived. The scientists then assessed each subject’s strength and cardiovascular fitness. And they found that the 98-pound weaklings banged their buttons quicker than the well-muscled, because they perceived the threatening sound as being closer than it actually was. The finding got a hearing May 21st at the meeting of the Acoustical⁴ Society of America in Portland, Oregon. Such auditory overreacting, the scientists say, could be a survival mechanism⁵. So that the meek⁶, while waiting to inherit the earth, can avoid getting knocked onto it.

Thanks for the minute for scientific American's 60-second Science. I'm Karen Hopkin.