Anthro 124A Week 3 Wednesday - Anthro 124A Week 3 Wednesday...

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Anthro 124A Week 3 Wednesday 1/22/14 Human Mating and Marriage Systems Mating vs Marriage Mating is a biological concept whereas marriage is a cultural construct All sexually reproducing species mate, but only humans marry With only a few exceptions, marriage is a human universal Key Questions Why do men and women vary in how choosy they are in selecting mates? Why is brideprice so much more common than dowry? Why is polygyny so much more common than polyandry? Why would women ever marry a married man? Or men a married woman? Bateman’s Principle and the Mating vs Parenting Trade-Off Females almost always expend more energy in producing offspring than males o It takes more energy to produce eggs o Females also have to lactate Therefore, females will be more choosy in mate selection (assumption) o Females generally don’t gain anything by having sex with more than one male Her potential RS is limited by how many eggs she produces o Males stand to gain a lot from copulations with additional females His potential RS is limited by how many mates he can copulate with Higher variance in RS for males than females Variance in Reproductive Success Female RS is limited by her own egg production, not typically by how many males she can have > limited variance in RS Men can gain significantly by acquiring multiple mates as their RS is limited by number of women > greater variance in RS Choice in Sexual Partners Buss (1994) o How many sexual partners do you want in the next month? o How many sexual partners do you want in the next year? o How many sexual partners do you want over your lifetime? He was testing same kinds of ideas in what differential reproductive success means Choice in Sexual Partners Buss (1994) How many sexual partners do you want in the next month? o Women (0.8), Men (2.0) How many sexual partners do you want in the next year? o Women (1.0), Men (8.0) How many sexual partners do you want over your lifetime? o Women (4-5), Men (18) How Choosy Should I Be?
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Clark and Hatfield (1989) o Hired attractive men and women to approach members of the opposite sex on campus and after initial conversation, ask the following: Would you go out with me tonight? Would you go back to my apartment with me? Would you go to bed with me? Mate Choice Sex Difference in Response to Approach o For the date it was 50/50 for both sexes o When asking to go back to their apartment it significantly lowered for women and slightly raised for me o When asked to go to bed no women agreed, but over 75% of men said yes Choosiness Redux
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