Recently I’ve read about an experiment in nudity, which was filmed by the BBC’s Horizon programme, “to test some of the scientific theories that explain why naked bodies make us so uncomfortable“. The first thing I’ve learned from the article entitled “Can people unlearn their naked shame?” which appeared some time ago on the BBC NEWS site (BBC NEWS | UK | Magazine) is that “a naked human is just that bit more naked than other primates“. Some anthropologists believe “that evolutionary step towards nudity had huge implications for the human race“, because it helped human ancestors to cool quicker (“our ancestors’ unique ability to sweat“) and led to development of bigger brains and than “to culture, tools, fire, and language“.
In addition to explaining a very peculiar quirk of our appearance, the scenario suggests that naked skin itself played a crucial role in the evolution of other characteristic human traits, including our large brain and dependence on language. (see Scientific American Magazine: The Naked Truth: Why Humans Have No Fur By Nina G. Jablonski)
However, it is clear that “our nudity arose out of practical need, but that doesn’t answer why we’re so ashamed by it“. After a series of experiments, researchers have discovered that “we are not born with a shame of nudity. Instead we learn it, as an important behavioural code that allows us to operate in human society“. But what are the social benefits of a shame of nudity? A psychologist explains that adult humans need to form a stable pair because of “the long immature period of a young human“. Whereas “showing off a naked body sends out sexual signals that threaten the security of mating pairs“.
Of course, it is possible to give absolutely different explanations. For instance, the nearly hairless state of the human body may be explained by the so-called aquatic phase hypothesis according to which human ancestors have lost most of body hair and gained a layer of body fat under the skin because they spent much time in water (cp. Skin: A Natural History by Nina G. Jablonski). A shame of nudity, in its turn, may origin from the fact that from the early stages of human civilizations clothes – its style and design – used to symbolize the position (ranking) of an individual within a society (in a hierarchy). So, a lack of clothes may be considered as humiliating (a naked person is a person without a rank). Here nothing can be proved, since there is no verification mechanism.