Coronavirus disease 2019 (COVID-19) has induced stress and anxiety. According to past studies, positive support within married couples reduces stress during diseases and disasters, but their mechanisms are unclear. To address this gap and help individuals better cope with COVID-19-related psychological distress, this study examined the relationships among daily positive support, daily gratitude, and daily stress within married couples. In this 14-day daily diary study, 54 heterosexually married couples (N = 108) aged 28 to 71 years participated. After reporting their demographic information at the start of the study, they reported their perceived positive support from their partner, daily stress, and feelings of gratitude at the end of each day of the study for 14 consecutive days. Using a multivariate outcome, multilevel cross-classification, we found that daily positive support was negatively associated with daily stress, mediated by daily feelings of gratitude. On a day when a person reported more perceived positive support than others, this person also reported a higher level of feelings of gratitude and a lower level of stress, regardless of age. We found only an actor effect, no partner effect. These findings show how greater daily positive support is linked to greater daily feelings of gratitude, which in turn is linked to less daily stress during an emergent public health crisis.

2019 年冠状病毒病 (COVID-19) 引起了压力和焦虑。根据过去的研究，已婚夫妇的积极支持可以减轻疾病和灾难期间的压力，但其机制尚不清楚。为了解决这一差距并帮助个人更好地应对与 COVID-19 相关的心理困扰，本研究检查了已婚夫妇日常积极支持、日常感恩和日常压力之间的关系。在这项为期 14 天的每日日记研究中，54 对年龄在 28 至 71 岁的异性恋已婚夫妇（ N = 108）参加了研究。在研究开始时报告了他们的人口统计信息后，他们连续 14 天在研究的每一天结束时报告了他们感知到的来自伴侣的积极支持、日常压力和感激之情。用一个多变量结果，多层次交叉分类，我们发现日常积极支持与日常压力呈负相关，由日常感激情绪介导。在一个人比其他人报告更多感知到的积极支持的那一天，这个人也报告了更高水平的感激之情和更低水平的压力，无论年龄大小。我们发现只有演员效应，没有伙伴效应。这些研究结果表明，更多的日常积极支持与更多的日常感激之情有关，而这反过来又与在突发公共卫生危机期间减少日常压力有关。