PSYC 1 Lecture Notes - Lecture 9: Facial Symmetry, Peer Pressure, Reproductive Health
SP18 PSYC 1: 1
Lecture 9: Nature VS Nurture pt. 2 04-20-2018
Gender Differences
in Jealousy
(based on
evolutionary theory)
What makes an
attractive face?
Nature/ Nurture:
Peer influence
• Why do men get more sexually jealous than women?
o Men are more concerned that they may be supporting offspring that
ae’t theis
• Why do women get more emotionally jealous than men?
o Women at e’s esouces, so eotioal attachet iceases the
likelihood of men leaving and taking away resources
• Waist-to-hip ratio: 0.70-0.75 body type more attractive to western men
o Represent the people most likely to have strong reproductive health
(baby and mother survival)
o Men in South America/ Africa prefer 0.80-0.90 ratio
• People who have distinctive features are typically viewed as more attractive by
others False
o Facial set ad the aeage face
o The average face in a population is the most attractive face
• Averageness hypothesis – composite of many faces is more attractive than any
single face
• Facial symmetry – oe likel to sigif oe’s esistace to ifectio ad haful
pathogens
• Facial asymmetry – increases with the presence of genetic problems, and may
signify exposure to environmental disturbances in the womb
o More likely in identical twins
• The degree of peer influence is hard to trace
• Selection effect – similar people will find each other despite the environment
they are in
o Eg. potheads will find potheads to be friends, aggressive people will find
aggressive people to befriend
Parents are more likely to influence
Peers are more likely to influence
• Choice in education (type of
school and duration of schooling)
• Cooperativeness
• Self-discipline
• Responsibility
• Learning the path to popularity
(12-14yr olds: copy trends)
• Selection of music
• Recreational choices (surf vs video
games)
• Clothing/ how you dress
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