Oklahoma State University, Stillwater, United States.
Missouri State, Springfield, United States.
Psychoneuroendocrinology. 2018 Dec;98:61-66. doi: 10.1016/j.psyneuen.2018.07.027. Epub 2018 Jul 26.
Attunement, or synchrony, of behavior and physiology has been well documented in family, mother-child, and romantic relationships. This study aimed to determine whether attunement of the hypothalamic-pituitary-adrenal (HPA) axis occurs in women's close friendships, and the role of a common social style, co-rumination in that attunement. Saliva samples (later assayed for cortisol) were collected from 37 dyads (74 individuals) during a laboratory task in which they were either asked to work together toward a common goal (control task) or discuss interpersonal problems, providing opportunity for co-rumination. Findings suggest that friends demonstrated adrenocortical attunement prior to engaging in either task, and that the level of attunement prior to the task predicted co-rumination and its components for both groups. Co-rumination, in turn, predicted adrenocortical attunement after the task. These findings suggest that bidirectional attunement of HPA activity may serve a bonding function within women's close friendships. Implications for how these findings fit with the tend-and-befriend hypothesis are discussed.
行为和生理的协调一致，或同步性，在家庭、母婴和浪漫关系中已有充分记录。本研究旨在确定下丘脑-垂体-肾上腺 (HPA) 轴的协调是否发生在女性的亲密友谊中，以及共同的社交风格——共同反思在这种协调中的作用。在一项实验室任务中，从 37 对（74 人）中采集唾液样本（随后检测皮质醇），他们要么被要求共同努力实现共同目标（控制任务），要么讨论人际关系问题，从而有机会共同反思。研究结果表明，在进行任何一项任务之前，朋友之间就表现出了肾上腺皮质的协调一致，而且在任务之前的协调水平预测了两组的共同反思及其组成部分。反过来，共同反思又预测了任务后的肾上腺皮质协调一致。这些发现表明，HPA 活动的双向协调可能在女性亲密友谊中起到了纽带作用。讨论了这些发现如何符合倾向和寻求帮助假说的问题。
