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Shape differences between the faces of homosexual and heterosexual men
Jaroslava Varella Valentova1, Karel Kleisner, Jan Havlíček
1Center for Theoretical Study, Charles University in Prague and The Academy of Sciences of the Czech Republic, Jilska 1, 11000, Prague 1, Czech Republic, valentova@cts.cuni.cz.
Archives of Sexual Behavior
|October 18, 2013
Summary
Facial shape differences exist between heterosexual and homosexual men, with homosexual men displaying a mosaic of masculine and feminine features. These morphological variations, however, did not accurately predict sexual orientation judgments.
Area of Science:
- Human Morphology
- Sexual Orientation Studies
- Facial Analysis
Background:
- Previous research indicates somatic trait differences between homosexual and heterosexual men.
- Lay perception accurately attributes sexual orientation from facial images, suggesting facial cues exist.
Purpose of the Study:
- To investigate facial shape differences between heterosexual and homosexual men.
- To determine if self-reported sexual orientation correlates with perceived sexual orientation and masculinity-femininity from facial images.
Main Methods:
- Geometric morphometrics was employed to analyze facial shape variations.
- Independent raters assessed sexual orientation and masculinity-femininity from standardized facial photographs.
Main Results:
- Significant facial shape differences were identified between homosexual and heterosexual men.
- Homosexual men exhibited wider, shorter faces with more massive jaws, a mix of feminine and masculine traits.
- Despite shape differences, attributed sexual orientation did not predict self-reported orientation; homosexual men were rated as more masculine.
Conclusions:
- Facial morphology differences between homosexual and heterosexual men do not solely reflect femininity.
- Stereotypical associations between feminine appearance and homosexuality may bias sexual orientation judgments.
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