Written by Erica Metelovski, M.A., The Jane Goodall Institute

Similar to child development studies, it is believed that infant, juvenile, and adolescent chimpanzees benefit greatly from the presence of older chimpanzees. It is through intergenerational contact that these younger members of the chimpanzee community grow socially adept at many life tasks. In return, the youngsters provide important social interaction opportunities for the older adult, such as encouraging playful activity.

One of the most significant roles senior chimpanzees play involves the caregiving realm As experienced mothers, it is frequently the older female generation which helps raise infants and instruct new mothers on the basics of parenting. These "alloparents" often groom, play with and protect other adult females' infants, while serving as positive parental role models. As very maternal "Aunties," these older females aid in such tasks as nursing and disciplining.

Though perhaps not attributable to age, some older chimpanzees assume mediating roles in outbreaks of aggression. These chimpanzees perhaps by virtue of experience, serve as a calming influence in situations of extreme aggression. The may help ameliorate conflicts and "smooth" things over after a fight. Some chimpanzees are quick to pick on the reserve of older chimpanzees, which helps pacify the anxiety of others.

Reaching old age does not signify the end of usefulness for chimpanzees. Senior chimpanzees continue to actively participate in their society. Though seniors may not occupy roles similar to their youth, they comprise an important and necessary component of the chimpanzee community. Through such activities as teaching and leadership, older chimpanzees greatly contribute to the group's welfare.