Parental Investment Theory

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Who put forward the parental investment hypothesis?
Trivers
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What does the parental investment hypothesis state?
Men and women have different levels of investment in a child
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What does the parental investment theory say about males?
Their investment is minimal, producing sperm is not costly or time consuming and males don't have to invest in raising the child
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What should men therefore do?
They should have sex with as many as possible to increase the chances of passing on their genes
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What does the parental investment theory say about women?
A women's investment is large, they must continue to invest after conception. They can only get pregnant once every 9 months, so mating effort is less important
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What should women therefore do?
They should be more choosy as they have nothing to gain from sleeping around with lots of males who don't stick around
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What did Davis find in newspaper ad's?
Men look for looks and women look for resources + maturity
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What did Nash 1988 say?
One night stands don't usually end up in pregnancy
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What did Buss 2000 say?
Accepeted the evolutionary explanation but states sexual discrimination in women and sexual competition in men could be a problem in modern relationships
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Social norms...
It usually acceptable for men to be promiscuous but nice girls don't...
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Some women...
Do have one night stands
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Some men...
Don't sleep with loads of women
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What does sexual strategies say about women?
Women seek a generous mate in short term relationships see if they would be suitable for a long term relationship
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What does sexual strategies say about men?
Men look for a sexually willing women in one night stands and and in a long term partner should be faithful and good mothering skills
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Card 2

Front

What does the parental investment hypothesis state?

Back

Men and women have different levels of investment in a child

Card 3

Front

What does the parental investment theory say about males?

Back

Preview of the front of card 3

Card 4

Front

What should men therefore do?

Back

Preview of the front of card 4

Card 5

Front

What does the parental investment theory say about women?

Back

Preview of the front of card 5
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