A FOXY VIEW OF HUMAN BEAUTY: IMPLICATIONS OF THE FARM FOX EXPERIMENT FOR UNDERSTANDING THE ORIGINS OF STRUCTURAL AND EXPERIENTIAL ASPECTS OF FACIAL ATTRACTIVENESS

摘要

Within 20 years, experimental selection of quantified "not too aggressive, not too fearful" behavior to human approach was shown in silver foxes (Vulpes vulpesj to produce a neotenu-package of traits in adults: ability to seek, induce, and sustain contact (called friendly or rapport behavior); relatively short limbs and foreshortened skull/face; and light pigmentation areas. Earlier sexual maturation, prolonged receptivity, and larger litters were also noted. The increased estradiol supporting thesechanges was apparently also responsible for faster skeletal maturation, including earlier fusion of the basicranium causing tooth crowding, but also paedomorphic craniofacial proportions that we find attractive in our own and other species. In this paper, these important findings of the farm fox experiment are juxtaposed with insights from social psychology, physical anthropology, and neurosci-ence about facial beauty and reaction to it. Since many unrelated species show some or all of the neotenic package or domestication profile when they have achieved rapport past the juvenile stage, craniofacial proportions considered attractive are discussed as genetically and hormonally linked to the evolution of rapport—social contact, trust, and cooperation—whether by natural, intuitive, intentional, or mixed paths of selection.