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Growing Disgust

Infants are born without the emotion of disgust. It does not fully develop until age seven. As everyone knows children at age two will put everything in their mouths. Researchers put grasshoppers into milk glasses and offered them to five-year-olds. The kids took the grasshoppers out and drank the milk. By age seven, the kids understood the concept of contamination, and would not drink the milk.

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