School of Anthropology, University of Arizona, Tucson, Arizona, USA.
Am J Hum Biol. 2021 May;33(3):e23498. doi: 10.1002/ajhb.23498. Epub 2020 Sep 2.
This study assesses whether increased exposure to allomaternal care (AMC, or non-maternal care) is associated with improved infant motor and social milestone attainment.
Typically developing infants aged 13-18 months (n = 102) were assessed by their mothers using the previously validated National Center for Health Statistics' Motor and Social Development Scale (MSD). AMC exposure from birth to present was quantified using four AMC predictor components.
Exposure to Highly Involved Familial AMC has a significant medium effect on MSD score, such that infants experiencing more of this type of care score higher.
Familial AMC is associated with improved milestone attainment, suggesting that learning experiences are enhanced by these interactions, although further cross-cultural studies are needed. If future studies confirm the positive effects of AMC interactions on early developmental outcomes, this may help explain the selective pressures for extensive AMC.
本研究评估了接触异体照顾（AMC，即非母婴照顾）是否与婴儿运动和社会里程碑的获得有关。
通过母亲对 13-18 个月大的正常发育婴儿（n=102）使用先前验证的国家卫生统计中心的运动和社会发展量表（MSD）进行评估。使用四个 AMC 预测成分来量化从出生到现在的 AMC 暴露。
从出生到现在，高度参与的家庭 AMC 暴露对 MSD 评分有显著的中等影响，即经历这种类型的照顾越多的婴儿得分越高。
家庭 AMC 与里程碑的获得有关，这表明这些互动增强了学习经验，尽管需要进一步的跨文化研究。如果未来的研究证实 AMC 互动对早期发育结果的积极影响，这可能有助于解释对广泛 AMC 的选择压力。
