Human (Homo sapiens) facial attractiveness and sexual selection: the role of symmetry and averageness.

  title={Human (Homo sapiens) facial attractiveness and sexual selection: the role of symmetry and averageness.},
  author={Karl Grammer and Randy Thornhill},
  journal={Journal of comparative psychology},
  volume={108 3},
We hypothesized from the parasite theory of sexual selection that men (Homo sapiens) would prefer averageness and symmetry in women's faces, that women would prefer averageness and symmetry in men's faces, and that women would prefer largeness (not averageness) of the secondary sexual traits of men's faces. We generated computer images of men's and women's faces and of composites of the faces of each sex, and then had men and women rate opposite-sex faces for 4 variables (attractive, dominant… 

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