Humans are an interesting mixture of altruism and competition. We work together well at times and at others we will fight to get our own way. To try to explain these conflicting tendencies, researchers have turned to the chimpanzees and the bonobos for insight.

Among the great apes, the chimpanzees and the bonobos are the most genetically related to us as we share about 98.7% of our DNA with them. We share a common ancestor with them as well as anatomical features, complex social hierarchies and problem-solving skills.

Bonobos may be one of our closest cousins but chimpanzees dominated research after Jane Goodall discovered in the 1960s that chimpanzees make and use tools. This finding paved the way for research on chimpanzees as a lens to understand which human aspects are natural rather than socially conditioned. An array of human characteristics, including empathy, playfulness and respect for elders have since been attributed to our shared ancestry with chimpanzees.

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https://innerself.com/personal/attitudes-transformed/behavior/28453-what-our-closest-relatives-tell-us-about-being-human.html