Maternal emotional and physiological dysregulation has been found to influence child stress physiology. This study characterizes diurnal cortisol and basal heart rate variability (HRV) patterns in a predominately high‐risk sample of mothers with a full range of emotion dysregulation and assessed the magnitude of concordance (N = 68 mother‐preschooler dyads). Overall, dyads exhibited concordance in evening salivary cortisol levels, but not for morning levels or HRV. Maternal emotion dysregulation was associated with maternal and child evening cortisol levels, child morning cortisol levels, and maternal HRV. Bootstrapping analyses showed that maternal emotion dysregulation was associated with higher child evening cortisol levels through its impact on mother evening cortisol levels. This study offers preliminary evidence for understanding child stress physiology and dyadic concordance in a sample of mothers with a range of emotion regulation capabilities.

中文翻译：

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学龄前儿童双亲的母亲情绪失调和生理一致性

已发现孕妇的情绪和生理失调会影响儿童的应激生理。这项研究在一个主要的高风险母亲中，表现出昼夜皮质醇和基础心率变异性（HRV）模式的特征，这些母亲的情绪失调范围广泛，并评估了一致性的程度（N= 68个学龄前儿童双胞胎）。总体而言，二分体在夜间唾液皮质醇水平上表现出一致性，但在早晨水平或HRV方面则没有。产妇情绪失调与母婴夜间皮质醇水平，儿童早晨皮质醇水平和孕产妇HRV相关。自举分析表明，母亲情绪失调是通过影响母亲夜间皮质醇水平而与儿童夜间皮质醇水平升高相关的。这项研究为理解具有一系列情绪调节能力的母亲样本中的儿童压力生理和二元一致性提供了初步证据。