"Size matters" sounds like a tabloid cliché, but for evolutionary biologists the size of the human penis is truly a puzzle.

Women most often ranked male bodies more attractive when they exhibited a higher shoulder-to-hip ratio (i.e. a V-shape) and a ...

This experimental study used life-sized and screen-based 3D male avatars to test how penis size, height, and body shape ...

According to the results, “Females rated male figures that were taller, had a higher shoulder-to-hip ratio (indicating a more ...

Men assess potential rivals that have a larger penis as more of a threat, both physically and sexually, according to a study by Upama Aich at the University of Western Australia and colleagues, ...