K. Grammer et R. Thornhill, HUMAN (HOMO-SAPIENS) FACIAL ATTRACTIVENESS AND SEXUAL SELECTION - THEROLE OF SYMMETRY AND AVERAGENESS, Journal of comparative psychology, 108(3), 1994, pp. 233-242
We hypothesized from the parasite theory of sexual selection that men
(Home 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 s
exual 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 ha
d men and women rate opposite-sex faces for 4 variables (attractive, d
ominant, sexy, and healthy). Symmetry, averageness, and the sizes of f
acial features were measured on the computerized faces. The hypotheses
were supported, with the exception of the hypothesized effects of ave
rageness of female and male faces on attractiveness ratings. This is t
he first study to show that facial symmetry has a positive influence o
n facial attractiveness ratings.