What Chimpanzees Can Teach Us About Human Friendships
Brooke N. Dulka: When we are older, we tend to focus on maintaining positive, meaningful relationships. One idea suggests that we become more selective about our friends because we become increasingly aware of our own mortality. In other words, we have future-oriented cognition. However, a recent study published in Science on the wild chimpanzees living in Uganda’s Kibale National Park suggests that our friendships may not actually be tied to thinking about the future. Alexandra Rosati, an evolutionary psychologist at the University of Michigan and one of the study’s lead investigators, had heard about this long-term field study in Uganda. “It seemed like it all could sort of fit together, in this cool way, this primatology data to actually test this idea about human cognition,” she says.