Convergent evolution: Psychology Association says killer whales share personality traits with humans, chimps | Uncommon Descent

Using a five-factor test. Convergent evolution is cited:Researchers found that the personality traits of killer whales were similar to those of both humans and chimpanzees but more similar to chimpanzees. Killer whales were similar to chimpanzees and humans for the extraversion factor (e.g., playf

Source: Convergent evolution: Psychology Association says killer whales share personality traits with humans, chimps | Uncommon Descent

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