Motivatio3 - Motivation Evolutionary Explanations Some...

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Motivation Evolutionary Explanations Some theorists use evolutionary theory to explain these gender differences. Their explanations are generally based on Robert Trivers’s idea that men and women make different parental investments in order to produce offspring. From a biological standpoint, men invest no more than the energy required for intercourse. Women, on the other hand, invest time and energy in pregnancy and breast feeding. Because of these biological differences, females can produce only a limited number of offspring, whereas males can potentially produce virtually unlimited offspring. Males can increase their reproductive success by producing as many offspring as possible. Evolutionary theory predicts that men tend to choose attractive, youthful partners because these qualities imply good health and an ability to reproduce successfully. Females increase their reproductive success by being highly discriminating when choosing mates. They try to select males who have the most access to material resources, because such males can contribute the most to caring for offspring. Furthermore, men must contend with paternity uncertainty—they can never be certain that they are the fathers of their partners’ offspring. Evolutionary theorists predict that men would therefore tend to have concerns about their partners’ sexual infidelity. Women, on the other hand, can be certain that their offspring are their own, though they cannot be certain that their partners
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This note was uploaded on 01/23/2012 for the course PSY PSY2012 taught by Professor Scheff during the Winter '09 term at Broward College.

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Motivatio3 - Motivation Evolutionary Explanations Some...

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