Chimpanzees sometimes approach members of their group t…
タグ: Frans B. M. de Waal
Reciprocal behavior
Reciprocity is the act of two parties mutually rewardin…
関心と興味の外に広がる、「知の世界」へ ようこそ
Chimpanzees sometimes approach members of their group t…
Reciprocity is the act of two parties mutually rewardin…