Jake S. Brooker

The paper documents chimpanzees copying arbitrary behaviors, such as inserting grass in ears and rectums, from conspecifics, suggesting social learning of non-functional actions.

The paper compares consolation behavior in bonobos and chimpanzees, finding similar tendencies but greater within-species variation.

This study investigates grooming and play contagion in chimpanzees, finding social closeness influences grooming contagion while age affects play contagion.