Now showing items 1-1 of 1

    • Chimpanzees return favors at a personal cost. 

      Schmelz, Martin; Grueneisen, Sebastian; Kabalak, Alihan; Jost, Jürgen; Tomasello, Michael (Proc Natl Acad Sci U S A, 2017-06-19)
      Humans regularly provide others with resources at a personal cost to themselves. Chimpanzees engage in some cooperative behaviors in the wild as well, but their motivational underpinnings are unclear. In three experiments, ...