Market forces affect patterns of polygyny in Uganda
Market forces affect patterns of polygyny in Uganda
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DOI：
10.1073/pnas.0810016106
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发表时间：
2009-02-17
影响因子：
11.1
通讯作者：
Nettle, Daniel
中科院分区：
文献类型：
--
作者：
Pollet, Thomas V.;Nettle, Daniel
一夫多妻制婚姻通常对男子比对妇女更有利，尽管妇女可以选择嫁给一个已婚男子，如果他是最好的选择。我们使用生物市场理论来预测，一个男人一夫多妻的可能性将是他所拥有的资源水平，当地性别比例以及当地人口中其他男人所拥有的资源的函数。使用2002年乌干达人口普查中56个地区超过100万名男子的记录，我们表明，一夫多妻制的已婚男子比一夫一妻制的已婚男子更有可能拥有土地，随着地区性别比例变得更加女性化，一夫多妻制的婚姻变得更加普遍，当该地区男子人数众多时，拥有土地尤为重要，在其他男人很少拥有土地的地区，男人拥有土地最能增加一夫多妻制的可能性。结果进行了讨论，参考模型的一夫多妻制的演变。
Polygynous marriage is generally more beneficial for men than it is for women, although women may choose to marry an already-married man if he is the best alternative available. We use the theory of biological markets to predict that the likelihood of a man marrying polygynously will be a function of the level of resources that he has, the local sex ratio, and the resources that other men in the local population have. Using records of more than 1 million men in 56 districts from the 2002 Ugandan census, we show that polygynously married men are more likely to own land than monogamously married men, that polygynous marriages become more common as the district sex ratio becomes more female biased, that owning land is particularly important when men are abundant in the district, and that a man's owning land most increases the odds of polygyny in districts where few other men own land. Results are discussed with reference to models of the evolution of polygyny.