Early concepts of intimacy: Young humans use saliva sharing to infer close relationships

  title={Early concepts of intimacy: Young humans use saliva sharing to infer close relationships},
  author={Ashley J. Thomas and Brandon Woo and Daniel Nettle and Elizabeth S. Spelke and Rebecca Saxe},
  pages={311 - 315}
Across human societies, people form “thick” relationships characterized by strong attachments, obligations, and mutual responsiveness. People in thick relationships share food utensils, kiss, or engage in other distinctive interactions that involve sharing saliva. We found that children, toddlers, and infants infer that dyads who share saliva (as opposed to other positive social interactions) have a distinct relationship. Children expect saliva sharing to happen in nuclear families. Toddlers… 
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