Objective: Leftward cradling bias is thought to facilitate optimal interaction between mother and infant. There is mixed evidence indicating this bias may be disrupted by depression. This study investigated the relationship between depressive symptoms and preferred cradling side (i.e., cradling bias) in nulliparous women. Method: Six hundred and nineteen females, aged 18 to 25 years, were asked to imagine cradling an infant to soothe it. This instruction was given on four separate occasions. Participants also completed the Beck Depression Inventory-II. All data were collected via an online survey. Results: As the number of depressive symptoms increased, leftward cradling decreased. Although this relationship was not statistically significant, a pattern emerged: As depressive symptoms increased, so too did the likelihood of cradling to the right. Furthermore, those scoring highest on depressive symptoms were more likely to cradle inconsistently to the left, consistently to the right, or show no bias, when compared to those scoring lower on depressive symptoms. Conclusions: Theory suggests that leftward cradling is facilitated by right hemisphere processes involved in relating to others. A relationship between affective symptoms such as depressive symptoms and reduced leftward cradling bias supports this argument. It is argued that leftward cradling facilitates optimal interactions between cradler and infant. Consequently, disruptions of leftward cradling have implications for child development.

中文翻译：

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抑郁症状破坏了向左的成长

目的：认为左手背对婴儿有利于母婴之间的最佳互动。有混合的证据表明这种偏见可能会因抑郁而受到干扰。这项研究调查了未产妇抑郁症状与偏爱的背侧（即背侧偏斜）之间的关系。方法：要求619名年龄在18至25岁之间的女性来想象如何抱着婴儿抚慰它。该指示是在四个不同的场合给出的。参加者还完成了贝克抑郁量表-II。所有数据都是通过在线调查收集的。结果：随着抑郁症状数量的增加，向左的背痛减少。尽管这种关系在统计学上不显着，但出现了一种模式：随着抑郁症状的增加，向右rad抱的可能性也增加了。此外，与抑郁症状评分较低的患者相比，抑郁症状评分最高的患者更有可能向左不一致，向右一致地摇篮或没有偏见。结论：理论表明，与他人交往涉及的右半球过程促进了向左的拥抱。诸如抑郁症状之类的情感症状与左手背负偏倚减少之间的关系支持了这一观点。有人认为，向左的幼儿可以促进幼儿与婴儿之间的最佳互动。因此，向左哺乳的中断对儿童发育有影响。与抑郁症状得分较低的人相比。结论：理论表明，与他人交往涉及的右半球过程促进了向左的拥抱。诸如抑郁症状之类的情感症状与向左的背负偏差减少之间的关系支持了这一观点。有人认为，向左的幼儿可以促进幼儿与婴儿之间的最佳互动。因此，向左哺乳的中断对儿童发育有影响。与抑郁症状得分较低的人相比。结论：理论表明，与他人交往涉及的右半球过程促进了向左的拥抱。诸如抑郁症状之类的情感症状与左手背负偏倚减少之间的关系支持了这一观点。有人认为，向左的幼儿可以促进幼儿与婴儿之间的最佳互动。因此，向左哺乳的中断对儿童发育有影响。有人认为，向左的幼儿可以促进幼儿与婴儿之间的最佳互动。因此，向左哺乳的中断对儿童发育有影响。有人认为，向左的幼儿可以促进幼儿与婴儿之间的最佳互动。因此，向左哺乳的中断对儿童发育有影响。