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在坦桑尼亚佩姆巴的食和知识的重要性:对儿童进化的影响
Ilaria Pretelli1,2, Monique Borgerhoff Mulder1,3, Bakar Makame Khamis1
1Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.
Proceedings. Biological sciences
|November 15, 2023
概括
人类的童年可能是为了获得技能而发展的. 这项研究发现,虽然采集技能随着年龄的增长而得到改善,但个人知识没有可检测的效果,这表明儿童采集者的社会学习.
科学领域:
- 人类进化生物学 人类进化生物学
- 发展心理学是发展心理学.
- 行为生态学 行为生态学
背景情况:
- 童年是一个独特的人类发展阶段,可能与获得基本知识和生存技能有关.
- 之前的研究表明,与年龄相关的食回报增加,但具体的驱动因素 (知识与身体特征) 仍然不清楚.
研究的目的:
- 通过分析特定年龄的食回报来调查童年的功能意义.
- 为了确定生态知识,握力和身高在儿童食成功中的相对重要性.
主要方法:
- 非线性结构方程模型被用于分析250个个体的数据以进行人体测量,93个为生态知识,63个为食行为.
- 收集的数据包括身高,握力,生态知识估计,以及兼职儿童采集者的370次采集旅行的观察.
- 估计了陷狩猎和贝类采集的年龄特定的食回报.
主要成果:
- 食回报随着年龄的增长而增加,但与贝类采集相比,陷狩猎的回报速度较慢.
- 没有发现个人生态知识对食回报的显著影响.
- 在食群体内潜在的信息共享可能解释了缺乏个人知识的影响.
结论:
- 童年的进化可能与技能获取有关,社会学习可能在获取成功方面发挥关键作用.
- 了解知识和身体属性等特征的独特贡献对于评估关于童年出现的假设至关重要.
- 进一步研究儿童的社会学习机制是有必要的.
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