概括
乱伦禁忌虽然对社会有益,但可以降低人口生育率. 计算机模拟表明,较大的人口需要更少的婚外生育才能保持稳定.
科学领域:
- 人类学是人类学.
- 人口统计学 人口统计学
- 社会学 社会学 社会学
背景情况:
- 理论上说,乱伦禁忌是通过婚姻监管提供心理社会利益的.
- 然而,婚姻法规可能会无意中导致由于交配延迟导致人口生育率下降.
研究的目的:
- 量化在规范性婚姻系统之外所需的生育率,以保持恒定的人口规模.
- 分析乱伦禁忌的范围,人口规模和必要的婚外生育之间的关系.
主要方法:
- 计算机微模拟实验被采用.
- 该研究模拟了不同程度的婚姻监管和人口规模的不同程度的人口动态.
主要成果:
- 维持人口所需的婚姻系统之外的生育水平与乱伦禁忌的范围直接相关.
- 这种所需的生育率与人口规模相反.
- 对于大群体 (数百人),生育能力的损失是可以忽略不计的;对于小群体 (几十人),它可以很大.
结论:
- 在少数人群中,灵活的婚姻安排可能是维持生育能力的关键,而无需不断修改婚姻规则.
- 这些发现强调了严格的社会规范对婚姻和乱伦的潜在人口成本.
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