一个男子同时有两个或两个以上妻妾的家庭形式。它是随着私有制的发展，男子在生产中起主导作用和掌握了社会财富的结果，是对偶婚向一夫一妻制过渡的产物，并一直存在于阶级社会。
一夫多妻制家庭中，由于在分享丈夫的资源时所得份额较小，地位较低的妻子境况不佳。
The low-ranking wives in polygynous marriages should be in worse condition because they get a smaller share of their husband's resources.
生活在犹他州的布朗一家表示，他们希望通过此剧让观众一窥他们的生活，帮助增进公众对一夫多妻制家庭的理解。
The Browns, of Utah, have said they hoped that the peek into their lives would help broaden the public's understanding of plural families.
Trivers-Willard 假说提出：贫穷的母亲更容易生女孩。 我们将其应用到一个研究母亲状况的新方法中—即在一夫多妻制家庭中妻子的地位。
We apply the Trivers-Willard prediction - that mothers in poor condition will overproduce daughters - to a novel measure of condition, namely wife rank within a polygynous marriage.
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