Oklahoma Center for Evolutionary Analysis (OCEAN), Department of Psychology, Oklahoma State University, Stillwater, OK, 74075, United States.
Oklahoma Center for Evolutionary Analysis (OCEAN), Department of Psychology, Oklahoma State University, Stillwater, OK, 74075, United States.
Biol Psychol. 2021 Apr;161:108059. doi: 10.1016/j.biopsycho.2021.108059. Epub 2021 Feb 27.
Friendships constitute important relationships, and often function to reduce stress, but have been under-studied. In mother-child dyads, infants coordinate their stress response with their caregivers without experiencing the stressor themselves. The current study used a modified version of the Trier Social Stress Test to examine whether i) friends are physiologically attuned (i.e., cortisol and progesterone); ii) attunement differs as a function of social acceptance or rejection external to the dyad; and, iii) friends can 'catch' a stress response only through non-verbal cues. Friends showed both cortisol and progesterone attunement at the beginning of the study. Friends showed cortisol attunement across time and conditions. Friends' progesterone levels were significantly, but negatively associated across time and conditions. They did not, however, show a stress contagion as a result of one friend experiencing stress. These findings suggest that cortisol and progesterone play different roles in the attunement of stress and subsequent affiliation.
友谊构成了重要的人际关系，通常有助于减轻压力，但却很少受到研究关注。在母婴二元体中，婴儿在不经历压力源的情况下与照顾者协调其应激反应。本研究使用了特里尔社会应激测试的改良版，以检验以下几点：i）朋友是否在生理上协调一致（即皮质醇和孕酮）；ii）这种协调是否因二元体之外的社会接纳或拒绝而不同；iii）朋友只能通过非言语线索“捕捉”到应激反应。朋友在研究开始时表现出皮质醇和孕酮的协调一致。朋友在整个时间和条件下表现出皮质醇的协调一致。朋友的孕酮水平在整个时间和条件下呈显著但负相关。然而，他们并没有因为一个朋友经历了压力而导致压力传染。这些发现表明，皮质醇和孕酮在压力的协调和随后的联系中起着不同的作用。
