Hane Amie Ashley, Fox Nathan A
University of Maryland-CP, 3304 Benjamin Building, College Park, MD 20742, USA.
Psychol Sci. 2006 Jun;17(6):550-6. doi: 10.1111/j.1467-9280.2006.01742.x.
We sought to extend earlier work by examining whether there are ordinary variations in human maternal caregiving behavior (MCB) that are related to stress reactivity in infants. We observed 185 mother-infant dyads and used standard coding systems to identify variations in caregiving behavior. We then created two extreme groups and found that infants receiving low-quality MCB showed more fearfulness, less positive joint attention, and greater right frontal electroencephalographic asymmetry than infants receiving high-quality MCB. Group differences in stress reactivity were not a result of measured infant temperament. However, infants receiving low-quality MCB manifested significantly more negative affect during caregiving activities than did infants receiving high-quality MCB. The results suggest that ordinary variations in MCB may influence the expression of neural systems involved in stress reactivity in human infants.
我们试图通过研究人类母亲养育行为（MCB）中是否存在与婴儿应激反应相关的普通变异来扩展早期的研究工作。我们观察了185对母婴，并使用标准编码系统来识别养育行为的变异。然后我们创建了两个极端组，发现接受低质量MCB的婴儿比接受高质量MCB的婴儿表现出更多的恐惧、更少的积极共同注意以及更大的右额叶脑电图不对称性。应激反应的组间差异并非测量的婴儿气质所致。然而，接受低质量MCB的婴儿在养育活动中表现出的负面影响明显多于接受高质量MCB的婴儿。结果表明，MCB中的普通变异可能会影响人类婴儿参与应激反应的神经系统的表达。
