PSY230H5 Lecture Notes - Lecture 10: Casual Sex, Parental Investment, Norm (Social)

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Published on 21 Oct 2016
School
Department
Course
Lecture 10: Personality and Evolution
Thursday, October 20, 2016
10:36 AM
Overview
o Evolutionary Psychology: The Basics
o Gender differences in sexuality
o Are all men and women the same?
w/in gender variation
Evolutionary Psychology
o Humans evolved over millions of years
o The human gene pool contains genes that were adaptive during evolution
Hunter-gatherer societies in the African savannah
o More adaptive genes should be more prevalent in the gene pool
o Adaptation is a slow process
Genes that were adaptive may no longer be adaptive today
o Evolution and gender
Many evolutionary problems are the same for men and women
Finding food, shelter, body temp regulation
No gender differences
Those genes are selected equally for the genders
Some evolutionary problems differ between men and women
E.g. uncertainty of paternity
Gender differences
o Desired time before having sex
Big gender difference
Women
After 1 hr no interest
Men
After 1 hr some difference
After 5 yrs no difference between genders
o The evolutionary explanation
Men and women differ in minimal parental investment
Minimal parental investment theory
Men
Cost less
Women
Cost more
Men can father hundreds of children in a life time
E.g. Genghis Khan --> 1 to 6 Asians can be traced to his relatives
Quantity can compensate for quality
Women can have only a relatively small # of children
Quality of the mate is important
Different Explanations
o Oliver and Hyde
Found that there are several explanations
Psychoanalytic explanation
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