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Psychology unit 3 relationships




Parental investment

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Parental investment is anything that increases survival chances of offspring at the
cost of the adult. The huge differences in parental investment cause big
differences in reproductive and parental behaviour between genders. Females do
more parental investment due to pregnancy, breast feeding and…

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Psychology unit 3 relationships




Daly and Wilson found children under age 2 were 60 times more likely to be
killed by their stepfather than their biological father. This supports the theory,
however in reality most fathers don't kill their stepchildren and the parental
investment theory can't explain this.

Buss used…

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