Parental investment

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  • Created by: Gemma
  • Created on: 12-04-14 11:32
What does PI state?
The sex who has to invest the most, will be the most choosy + discriminating
1 of 12
Women + PI
women have greater prenatal +postnatal care(premature),obligatory biological role which means resources can't be wasted, would be a waste of time. Employ LTMS because random mating is too costly(link with SS). Females=limited no.of offspring- choosy
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Men +PI
men invest far less: unlimited amount of sperm + dont have certainty child is theirs + so invest less to protect themself against cuckoldry
3 of 12
Miller
Men are more concerned about sexual infidelity of partner. (purpose - avoid problem of cuckoldry + females = concerned about shift in emosh focus - loss of resource for her + child
4 of 12
Dunbar
where a man can invest would pay him to do so to promote the survival of their offspring - joint parental care=:)
5 of 12
Rowe
PI based on evolutionary theory =severly limited. Other factors influence mens parental behaviour e.g. relationship with mother , characteristic of child
6 of 12
Daly + Wilson
Although cuckolding a partner can be a positive for her +child - getting extra resources, it can also lead to dangers e.g. violent abuse
7 of 12
Bellis + Baker
27,000 women in the UK 14% products of extramarital affair - suggests women settle down with someone who has resources + 'shops' elsewhere for good genes
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Anderson
Step father - not discriminant between own children + step-children
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Eagly + Wood
society defines roles based on perception of men being dominant. ST mating strategies employed because society allows it (SOCIAL ROLE THEORY)
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Ellis + Symons
Sexual fantasies of men + women. Men = multiple partners (strangers) , on + Off ==> STMS Women = one partner, who had known for a long time ==> LTMS
11 of 12
Reid
human males do contribute - investment they make reduces child mortality
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Card 2

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Women + PI

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women have greater prenatal +postnatal care(premature),obligatory biological role which means resources can't be wasted, would be a waste of time. Employ LTMS because random mating is too costly(link with SS). Females=limited no.of offspring- choosy

Card 3

Front

Men +PI

Back

Preview of the front of card 3

Card 4

Front

Miller

Back

Preview of the front of card 4

Card 5

Front

Dunbar

Back

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