Larger, more tolerant chimpanzee groups manage shared resources more effectively and exhibit less aggressive competition than smaller, more competitive groups. Tolerance functions as a group-level ...

Learn how comparing aggression in chimpanzees and bonobos challenges the long-held belief that chimpanzees are the more violent of our closest ape relatives.

For decades, scientists believed that bonobos, one of our closest living relatives, were among the most peaceful primates.

A recent study performed on chimpanzees demonstrates that chimpanzees possess cognitive flexibility similar to that of humans. When circumstances or evidence change, chimps appear to do the thing ...

The riskiest behavior in humans peaks in adolescence. Researchers from the University of Michigan and James Madison University expected to find risky behavior to peak in adolescence in a study of ...