
Lazyandtalentless
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Facial Symmetry and Attractiveness
The study found a significant relationship between facial symmetry and attractiveness ratings:- Women's attractiveness ratings of men's faces were positively correlated with facial symmetry.
- This relationship persisted even when symmetry cues were removed by presenting only half faces (left or right).
- Interestingly, subjects were unable to rate facial symmetry accurately when explicitly asked to do so.
- Facial symmetry influences attractiveness perceptions.
- The impact of symmetry on attractiveness is not solely due to direct perception of symmetry.
- Other facial features correlated with symmetry may serve as indirect cues of genetic quality.
Facial Masculinity as a Cue
The researchers identified facial masculinity as a potential marker of phenotypic condition:- A masculinity index was created based on two features:
- Cheek-bone prominence
- Relative lower face length (proportion of lower face to total face length)
- This masculinity index was positively correlated with:
- Women's attractiveness ratings of full faces (r = 0.48, p = 0.002)
- Attractiveness ratings of right half faces (r = 0.34, p = 0.040)
- Attractiveness ratings of left half faces (r = 0.49, p = 0.002)
- Actual measures of facial symmetry (r = 0.35, p = 0.031)
- More masculine facial features are perceived as more attractive by women.
- Facial masculinity is associated with greater facial symmetry.
- Masculine features may serve as visible cues of genetic quality that are detectable even in partial faces.
Implications for Evolutionary Psychology
The study's findings have several implications for our understanding of mate selection and evolutionary psychology:- Multiple cues of genetic quality: While symmetry is important, other facial features (like masculinity) can also signal genetic quality.
- Unconscious preference mechanisms: Women seem to prefer symmetrical faces without being able to consciously detect symmetry, suggesting an evolved, unconscious preference mechanism.
- Facial masculinity as an honest signal: The correlation between masculinity and symmetry suggests that masculine features may be an "honest signal" of genetic quality, as they are likely influenced by developmental stability and hormone levels.
- Robustness of attractiveness cues: The persistence of attractiveness ratings even in half-face presentations indicates that cues of genetic quality are robust and detectable from limited information.
- Potential for future research: This study opens avenues for investigating other facial features that might serve as cues of genetic quality and their relative importance in mate selection processes.