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  • Symmetry is related to sexual dimorphism in faces : data across culture and species 

    Little, Anthony Charles; Jones, Benedict Christopher; Waitt, C.; Tiddeman, Bernard Paul; Feinberg, David Russell; Perrett, David Ian; Apicella, C.L.; Marlowe, F.W. (2008-05) - Journal article
    Background: Many animals both display and assess multiple signals. Two prominently studied traits are symmetry and sexual dimorphism, which, for many animals, are proposed cues to heritable fitness benefits. These traits ...