The world of great apes is a fascinating one, and a recent study has shed light on their unique social behaviors, particularly their use of touch to build trust and cooperation. This research, conducted by scientists at Durham University, reveals that our closest ape relatives have an ancient and instinctive way of keeping the peace before stressful events, which might even date back to our shared ancestry with them. What's truly remarkable is that this behavior is not limited to just one species; both chimpanzees and bonobos engage in it, despite their different reputations for aggression and tolerance, respectively.
The study, which took place at two great ape sanctuaries in the Democratic Republic of Congo and Zambia, focused on the five minutes before the peanuts arrived, a time when the apes knew food was coming and competition was high. During this period, researchers observed a range of reassuring physical contacts, including touching, embracing, and kissing. One of the most intriguing findings was the presence of 'reassurance trains', where multiple apes would embrace each other in succession, creating a sense of unity and support.
Prof. Zanna Clay, a key researcher, described this behavior as a 'rallying cry' before a stressful event, akin to a football huddle. She emphasized the importance of this social bonding, stating that it is a 'we' rather than a 'me' mindset. This finding is particularly interesting because it challenges the common perception of chimpanzees as purely aggressive, showing that they, like bonobos, have a sophisticated social structure that involves building trust through touch.
Dr. Jake Brooker, another researcher involved in the study, highlighted the evolutionary significance of social touch. He suggested that this behavior is one of the oldest forms of communication and likely predated language. The researchers estimate that the use of touch to build trust and cooperation may have originated at least seven million years ago, before the split between humans, chimpanzees, and bonobos from a common ancestor. This means that when humans engage in these types of social bonding, they are tapping into a deep-seated instinct that has been a part of our shared history with great apes.
This study not only provides valuable insights into the social behaviors of great apes but also offers a fascinating perspective on human behavior. It suggests that the use of touch to build trust and cooperation is an ancient and universal tool, one that has likely contributed to the development of complex social structures in both apes and humans. As we continue to explore the similarities and differences between our species and our closest animal relatives, studies like this remind us of the rich evolutionary history that connects us all.
