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4/6/18
1
� Men tend to prefer women with longer hair
¡ Preference found across culture and history
� Long hair is a record of continued good health
¡ Growing shoulder-length hair takes at least 4 years of…
¢ Good health and diet ¢ No parasites or pathogens
¢ No serious diseases
¡ A healthy past predicts a healthy future
¢ Good health is necessary in order for women to conceive, carry, and care for children
� Humans are among the very few species with hair
¡ Most animals have fur
¢ Grows to certain length and then falls out
¡ Hair grows perpetually, unless cut or lost due to poor health
¢ Likely evolved as a way to show off health history
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2
�Why isn’t long hair sexy on men?
¡ Because their health history doesn’t matter
¡ Men produce viable sperm within 10 days of good health
¡ Men’s genes are more important than their health history
� What kind of voice is most attractive for men?
¡ Lower pitched, steady voice
¡ Signifier of high testosterone
¢ Deep voiced men tend to…
� Have more sex
� Have more sexual partners
� Produce more offspring
� Even after controlling for physical attractiveness
� What kind of voice is most attractive for women?
¡ Higher pitched voice
¡ Frequently travels up and down in pitch
¢ I.e., sing-song quality
¡ Signifiers of…
¢ High estrogen levels
¢ Good health
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3
� For women, higher pitch means higher fertility
¡ Correlated with having more and healthier offspring
� Many cultures include singing as part of courtship
¡ Perhaps a way to assess vocal qualities, and thus mating potential
You sound so fertile, even in that girdle
�What are optimal (i.e., sexy) pitches?
¡ Male voices range from 90 – 160 Hz
¢ Most attractive voices at 90 – 110 Hz
¢ Lower 30% of vocal range
¡ Female voices range from 180 – 250 Hz
¢ Most attractive voices at 230 – 250 Hz
¢ Upper 30% of vocal range
� What’s the difference?
A B C
Tilted Upward
Tilted Downward
NotTilted
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4
� Women and men look more or less attractive depending on how they tilt their head
¡ Researchers took pictures and made computer models of neutral faces, with heads tilted at different angles
� Women rated most attractive with chin tilted down¡ Makes women appear appear more child-like,
wide-eyed and submissive
¡ Emphasizes skinnier face and pointier chin
� Men rated most attractive with chin tilted up¡ Makes men appear more dominant and confident
¡ Emphasizes square jawline
4/6/18
5
� Seen frequently in film/animation
� Seen in virtually every Disney movie
� How do men move to appear most attractive?¡ Men tend to accentuate upper body (shoulder)
4/6/18
6
� How do women move to appear most attractive?¡ Women tend to accentuate lower body (hips)