Concept

Masters and Johnson's Anatomical Discoveries

During their sexual research, Masters and Johnson collected important data regarding reproductive anatomy. They documented the average sizes of flaccid and erect penises (3 and 6 inches, respectively) and demonstrated the high elasticity of the vagina, which can conform to penises of various sizes. These findings helped dispel long-held beliefs that the size of an erect penis correlates with its ability to provide sexual pleasure to a partner.

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Updated 2026-05-10

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