chimpanzees trust friends

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除了人類,其他動物也會交朋友,而且會信任對方。研究實驗把黑猩猩配對,會與好友分享食物,因為牠們相信朋友下次也會與自己分享,但如果不是朋友,牠們便會獨享食物。
beside human, other animals would make friends based on trust as well. a study pair up chimpanzees and found out they would only share food with friends because they trust their friends to share with themselves next time.

http://www.natureworldnews.com/articles/19417/20160119/chimpanzees-create-friendships-based-trust-humans.htm

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