Psychological Science, University of California, Irvine, California.
School of Behavioral Studies, The Academic College of Tel Aviv Yaffo, Tel Aviv, Israel.
Dev Psychobiol. 2019 Dec;61(8):1120-1134. doi: 10.1002/dev.21845. Epub 2019 Mar 13.
An increasing amount of empirical attention is focused on adrenocortical synchrony as an index of biobehavioral co-regulation between parent and child in the context of early child development. Working with an ethnically diverse community sample of children (N = 99, 50.5% male, ages 9-12), we collected saliva samples from mother-child dyads prior to and after a laboratory-based performance challenge task, and tested whether maternal overcontrol and child age moderated dyadic synchrony in cortisol. Results revealed that cortisol levels between mothers and children were significantly positively correlated at pretask for dyads with mean age and older children only, at 25-min post-task for all dyads, and at 45-min post-task for all dyads. Higher overcontrol/older child dyads exhibited a unique pattern of cortisol synchrony wherein at pretask, mother-child levels had the strongest positive correlation, whereas at 25 and 45 min, mother-child cortisol levels were significantly inversely correlated. These findings contribute to theory and research on parent-child relationships by examining parenting behavior, developmental stage, and adrenocortical synchrony in tandem.
越来越多的实证研究关注肾上腺皮质同步作为父母与子女在儿童早期发展背景下生物行为共同调节的指标。本研究采用了一个具有不同种族背景的儿童社区样本（N=99，50.5%为男性，年龄为 9-12 岁），在实验室基础的表现挑战任务之前和之后，从母子二人组中采集唾液样本，并测试了母亲过度控制和儿童年龄是否调节了皮质醇的双重同步性。结果表明，仅在平均年龄较大的母子二人组中，在任务前 25 分钟和所有二人组的 45 分钟后，母亲和儿童的皮质醇水平呈显著正相关。在高过度控制/大龄儿童二人组中，皮质醇同步呈现出独特的模式，即在任务前，母子水平的相关性最强，而在 25 和 45 分钟时，母子皮质醇水平呈显著负相关。这些发现通过同时检查育儿行为、发展阶段和肾上腺皮质同步性，为亲子关系的理论和研究做出了贡献。
