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1 .This is Scientific American 60-Second Science. I'm Sophie Bushwick. Got a minute?
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2 .All humans evolved to find certain female traits attractive, across cultures, because they signal a potential mate's reproductive potential.
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3 .Right?
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4 .Actually, a new study finds that cultural norms can also play a big part.
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5 .At least when it comes to big feet.
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6 .Once women give birth, their feet tend to grow larger.
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7 .Which means small feet are markers for youth and fertility, and thus should be universally attractive.
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8 .A previous study did find a widespread small-foot preference.
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9 .But University of Washington anthropologist Geoff Kushnick tested the hypothesis again among rural Indonesians called the Karo Batak.
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10 .One-hundred-fifty-nine men and women looked at a series of female figures, identical except for subtly different foot sizes.
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11 .Surprisingly, the Karo Batak rated the image with the largest feet the most attractive.
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12 .The work is in the journal Human Nature.
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13 .Among the Karo Batak, and other rural societies with low exposure to media, large feet are signs of a woman's strength and ability to do agricultural work.
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14 .This cultural big foot bias contradicts the notion of universal ideals of beauty.
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15 .Attractiveness is not one size fits all.
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16 .Thanks for the minute, for Scientific American 60-Second Science. I'm Sophie Bushwick.
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