Preference for self resembling faces in human mate choice and interpersonal relations
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Preference for self-resembling faces in human mate choice and interpersonal relations. Kocsor, F. – Juhász, Sz. – Rezneki, R. – Bereczkei, T. University of Pécs, Hungary Department of General and Evolutionary Psychology . Facial cues influencing attractiveness. Symmetry Averageness

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Preference for self-resembling faces in human mate choice and interpersonal relations

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Preference for self-resembling faces in human mate choice and interpersonal relations

Kocsor, F. – Juhász, Sz. – Rezneki, R. – Bereczkei, T.

University of Pécs, Hungary

Department of General and Evolutionary Psychology


Facial cues influencing attractiveness

  • Symmetry

  • Averageness

  • Masculinity/feminity

  • Self-resemblance(Bereczkei et al 2003, 2004, Gyuris 2003, DeBruine, 2002, 2004)


Effects of self-resemblance on attractiveness

  • reduces attractiveness of opposite sex faces (inbreeding avoidance),

    increases attractiveness of same-sex faces (affiliation toward kin) (Lisa deBruine 2004)

  • increases attractiveness of opposite sex faces; Physical, cultural and psychological symilarity of spouses are greater (Bereczkei et al. 2003, 2004)

    Contradiction to be solved


Objectives

  • Reveal the effect of self-resemblance on attractiveness

  • sexual / non-sexual context


Methods

  • Photos were taken of 150 volunteers

  • Average (composite) faces were made


Average faces


Making morphs

  • Marking of characteristic lines of the individual faces


Average faces

Férfi+nő átlagképek ide

Individual face

Individual face

2 individuals


Average faces

Férfi+nő átlagképek ide

4 individuals


Average faces

Férfi+nő átlagképek ide

8 individuals


Male and female average faces made of 8 individuals


Making warps

  • Individual face

  • Average face


  • Warped to 10 %


  • Warped to 20 %


  • Warped to 30 %


  • Warped to 40 %


  • Warped to 50 %


  • Warped to 60 %


  • Warped to 70 %


  • Warped to 80 %


  • Warped to 90 %


  • Warped to 100 %


Average faces

Warped to 60 %

Individual face


Preliminary study and evaluation of warps

  • Below 60 % there was no self-recognition

  • Above 60 % faces become distorted

  • All 60 % warps were evaluated by independent judges, in terms of attractiveness


Design of experiment


Male participants – opposite sex faces

Self-resembling face

Other-resembling faces matched by attractiveness


Male participants – same sex faces

Self-resembling face

Other-resembling faces matched by attractiveness


Female participants – same sex faces

Self-resembling face

Other-resembling faces matched by attractiveness


Female participants – opposite sex faces

Self-resembling face

Other-resembling faces matched by attractiveness


Results

Other sex images

  • Only men showed significant preference for self-resemblance

    Same sex images

  • Neither men nor women showed preference for self-resemblance

    Lack of preference or effect of sample size?


Conclusions

  • Men prefer self-resembling women

  • Women do not prefer self-resembling men, or draw their attention to other traits in potential long term partner

  • Homogamy is not an artefact caused by familiarity but specific psychological mechanism evolved for mate choice


Mechanism of homogamous mate choice

  • Phenotype matching

  • Sexual imprinting on the opposite-sex parent


References

  • Bereczkei T. et al. (2003): Homogámia, genetikus hasonlóság, imprinting Magyar Pszichológiai Szemle 4

  • Bereczkei T., Gyuris P., Weisfeld, G. E. (2004): Sexual imprinting in human mate choice Proc. Royal Soc. Lond. B 271

  • DeBruine, L. M. (2002):Facial resemblance enhances trust Proc. Royal Soc. Lond. B 269

  • DeBruine, L. M. (2004):Facial Resemblace affect behaviour and attributions Hamilton, Ontario, McMaster University

  • DeBruine, L. M: et al. (2005): Women's attractiveness judgments of self-resembling faces change across the menstrual cycle Hormones and Behavior, Volume 47, Issue 4, April 2005, Pages 379-383

  • Gyuris, P. (2003)Homogamy, imprinting, evolution: mate choice of women and men rearing in various family environments. PhD thesis, University of Pécs, Hungary. [In Hungarian.]


Thank you for your attention!

Evolutionary Psychology Research Group of Pécs

www.evolutionpsychology.com

www.bereczkei.hu


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