The study shows that children are aware of this dynamic from a very young age, and see saliva exchange -- through activities like kissing, sharing food, or wiping away dribble -- as a cue to tell whether two people have a special bond
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The study shows that children are aware of this dynamic from a very young age, and see saliva exchange -- through activities like kissing, sharing food, or wiping away dribble -- as a cue to tell whether two people have a special bond
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