Synchrony of Diurnal Cortisol Pattern in Couples
Synchrony of Diurnal Cortisol Pattern in Couples
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DOI：
10.1037/a0033735
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发表时间：
2013-08-01
影响因子：
2.7
通讯作者：
Almeida, David M.
中科院分区：
文献类型：
--
作者：
Liu, Siwei;Rovine, Michael J.;Almeida, David M.
皮质醇是应激反应的生物标志物，其昼夜模式是一般神经内分泌健康的指标。尽管理论概念化的动态系统，其中配偶是相互依存的，在他们的生理和压力应对的夫妻二人，很少有人知道的日常过程中，配偶可能会影响对方的生物压力。19对异性夫妇提供含有皮质醇的唾液样本，每天4次，连续4天。我们使用多层次模型来研究是否一个人的皮质醇觉醒反应（CAR）和昼夜皮质醇斜率（DCS）预测配偶的同一天和/或第二天。我们发现，配偶会同步他们的DCS，这样，当一个人的昼夜皮质醇下降速度比平时快或慢时，配偶也会比平时下降得快或慢。对于CAR，只有在报告婚姻紧张和分歧程度高的夫妇中才观察到积极的同步性。交叉滞后回归分析显示昼夜皮质醇模式稳定。一个人在某一天的皮质醇斜率越陡，预示着第二天的斜率越陡，但配偶之间没有发现明显的交叉滞后关系。报告更多配偶支持的夫妇往往在CAR中具有更强的稳定性。这些研究结果提供的证据表明，配偶是相互依赖的，在他们的昼夜皮质醇模式的日常基础上，这些日常动态与婚姻关系的质量。这项研究有助于我们理解婚姻过程和生物行为健康。它也有助于纵向二元分析的进步方法。
Cortisol is a biomarker of stress reactivity, and its diurnal pattern is an indicator of general neuroendocrine health. Despite theories conceptualizing marital dyads as dynamic systems wherein spouses are interdependent in their physiology and stress coping, little is known about the daily processes in which spouses possibly influence each other in biological stress. Nineteen heterosexual couples provided saliva samples containing cortisol 4 times a day for 4 consecutive days. We used multilevel modeling to examine whether one's cortisol awaking response (CAR) and diurnal cortisol slope (DCS) predict those of the spouse's on the same day and/or on the next day. We found that spouses synchronize their DCS, such that on days when one experiences faster or slower decline in diurnal cortisol than usual, the spouse also experiences faster or slower decline than usual. For CAR, positive synchrony was only observed in couples reporting high levels of marital strain and disagreement. Cross-lagged regression analysis reveals stability in diurnal cortisol pattern. A steeper cortisol slope on a particular day predicts a steeper slope on the next day within an individual, but no significant cross-lagged relation was found between spouses. Couples reporting more spousal support tend to have stronger stability in CAR. These findings provide evidence that spouses are interdependent in their diurnal cortisol patterns on a day-to-day basis, and that these daily dynamics are associated with marital relationship quality. The study contributes to our understanding of marital processes and biobehavioral health. It also contributes methodologically to the advancement of longitudinal dyadic analysis.