First we must ask Why does a woman (or a man, for the matter) vocalize during sex at all? Sure, there might be a host of valid social reasons - one might be to boost the ego of the man [92% of the women in study agreed to this statement, and 87% reported vocalizing for this very purpose] (Brewer and Hendrie, 2010), or to deceive the man that they are a competent lover (68% of women reported wanting to stay with a man even though he never helped her climax) (Brewer and Hendrie, 2010).

But from an evolutionary perspective we must be mindful of a few things: First, men do not vocalize in the same manner as women. Second, comparative evidence in chimps suggests that vocalizations are for attracting more males to a sexual encounter (in order to have more sex), which is further supported by the fact that when chimps are engaging in down-strata copulation (that is, if the women is having sex with someone she ’shouldn’t’ be having sex with) she still makes chimpanzee sex-faces, but fails to make the vocalizations.

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painting { Erik Mark Sandberg }

noise and signals, relationships, science, sex-oriented | February 14th, 2011