According to a new study by the University of Warwick, kissing may have evolved from grooming behaviors practiced by ancient great apes.
Few animals truly kiss like humans do. Chimpanzees and bonobos are the only exceptions, highlighting the unique nature of this human behavior. Kissing is one of the few natural human gestures that carries significant symbolism and social expectations. For over 4,500 years, cultural norms across civilizations have shaped how affection can be expressed, dictating who may kiss, where, when, in what manner, and even how often this happens.
Adriano R. Lameira from the University of Warwick’s Department of Psychology led a thorough review of current theories to investigate the evolutionary origins of this intimate behavior, highlighting grooming as a key method for building and maintaining social bonds within great ape groups.. As humans evolved and body hair reduced, the need for intensive grooming decreased, leading to much shorter grooming sessions.
For instance, capuchin monkeys express affection by placing their fingers in the eyes and nostrils of their close companions.
Grooming Behaviour Health Humans Kissing University Of Warwick
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