title: Facial symmetry detection ability changes across the menstrual cycle.
abstract: The effects of menstrual cycle phase and hormones on women's visual ability to detect symmetry and visual preference for symmetry were examined. Participants completed tests of symmetry detection and preference for male facial symmetry at two of three menstrual cycle phases (menses, periovulatory, and luteal). Women were better at detecting facial symmetry during the menses than luteal phase of their cycle. A trend indicated the opposite pattern for dot symmetry detection. Similarly, change in salivary progesterone levels across the cycle was negatively related to change in facial symmetry detection scores. However, there was no clear evidence of a greater preference for facial symmetry at any cycle phase, despite an overall preference for facial symmetry across phases. These findings suggest a menses phase advantage and a low progesterone advantage in women's ability to detect facial symmetry. The results are discussed in the context of hormonal, evolutionary mate selection, and functional neurocognitive theories.
authors.affiliation: Department of Psychology, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada. koinonen@lakehead.ca
authors.forename: Kirsten A
authors.initials: KA
authors.lastname: Oinonen
authors.forename: Dwight
authors.initials: D
authors.lastname: Mazmanian
mesh_terms: D000293:Adolescent; D000328:Adult; D001076:Aptitude / Q000502:physiology*; D001288:Attention / Q000502:physiology; D005075:Biological Evolution; D002755:Choice Behavior / Q000502:physiology; D004193:Discrimination Learning / Q000502:physiology; D005145:Face; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008183:Luteal Phase / Q000502:physiology; D008393:Marriage / Q000523:psychology; D008597:Menstrual Cycle / Q000502:physiology* / Q000523:psychology; D010060:Ovulation / Q000502:physiology / Q000523:psychology; D010364:Pattern Recognition, Visual / Q000502:physiology*; D011374:Progesterone / Q000097:blood; D012463:Saliva / Q000378:metabolism
chemical_list: D011374:Progesterone