This study examines whether a birth of higher parity affects mothers' well-being. Literature documents that well-being is linked to a subsequent birth but differs in its conclusions about how and why. In particular, the underlying processes are not yet understood. There is some evidence that a subsequent birth impairs coparenting, the way parents work together, because parents have to adapt to and reorganize this new-person-in-context constellation. Also, the financial costs of children and the pressure this might put on the family system have to be considered. Applying the framework of the Family Stress Model, we examine the process of how a subsequent birth affects mothers' well-being by considering both factors as mediators in a structural equation model. Using German two-wave panel data (AID:A 2009 and 2014; German Youth Institute, 2019) on 3,738 nuclear families, our findings suggest that, after a subsequent birth, if mothers perceive a deterioration in coparenting and their personal income increases at a lower rate, then these factors mediate the association between a higher parity parenthood and decrease mothers' well-being. The findings are important for prevention and intervention because they suggest that a subsequent birth can negatively affect familial resources, such as the quality of coparenting, with risks for partnership stability as well as child development. The findings are also important for family policy because they indicate that a worsened personal financial situation after a subsequent birth affects mothers' individual well-being negatively and might thus be relevant for further fertility intentions. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

中文翻译：

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将母亲的福祉与以后的生育联系起来：父母育儿和个人收入的中介作用。

这项研究检验了较高的出生率是否会影响母亲的幸福感。文献记载，幸福与后来的生育有关，但是关于如何和为什么的结论却有所不同。特别是，尚不了解基本过程。有证据表明，随后的生育会削弱父母的合作方式，即父母共同工作的方式，因为父母必须适应并重新组织这种新的人际关系。此外，还必须考虑儿童的经济成本以及这可能对家庭系统造成的压力。应用家庭压力模型的框架，我们通过在结构方程模型中将两个因素都视为调解人，研究了后续生育如何影响母亲的幸福的过程。使用德国的两波面板数据（AID：A，2009年和2014年；德国青年学院，2019年）在3,738个核心家庭中，我们的发现表明，如果第二胎出生后，母亲的父母对父母的照料能力有所下降，而他们的个人收入却以较低的速度增长，那么这些因素将介导较高的同等父母身份和降低母亲的健康水平之间的联系-存在。这些发现对于预防和干预很重要，因为它们表明，随后的分娩会​​对家庭资源产生不利影响，例如父母同居的质量，以及伴侣稳定和儿童成长的风险。这些发现对于家庭政策也很重要，因为它们表明，随后生育后个人财务状况的恶化会对母亲的个人幸福产生负面影响，因此可能与进一步生育的意图有关。（PsycInfo数据库记录（c）2020 APA，