Shigemoto Yuki, Bhattarai Muna
Department of Psychology, University of Florida, Gainesville, Florida, USA.
Harris College of Nursing and Health Sciences, Texas Christian University, Fort Worth, Texas, USA.
Stress Health. 2025 Aug;41(4):e70067. doi: 10.1002/smi.70067.
The existing literature on posttraumatic growth has supported the mediating role of deliberate rumination (DR) between intrusive rumination (IR) and posttraumatic growth (PTG). However, limited studies have examined the interplay between the change components of rumination and PTG, limiting our understanding to the momentary association at a given time. Therefore, this study aimed to distinguish the rumination and PTG variables into intercept and slope factors and examine the mediation effect. Participants were 552 adults (M = 38.27, SD = 12.15) recruited from Amazon's Mechanical Turk. In total, data collection occurred at nine timepoints, starting in April 2020 and ending in April 2023. Consistent with the existing cross-sectional research, we found a full mediation model where DR mediated the relation between IR and PTG, all measured at Time 1. However, we found none of these scores measured at Time 1 of our data were associated with the change components of rumination and PTG. Similarly, when focussing on the change components, we identified a full mediation model between IR and PTG via DR. However, no significant association was found with the Time 1 scores of the variables. These results highlight the importance of focussing on the changes in rumination when predicting changes in PTG and supporting the continuous engagement of intentional rumination over time in predicting future changes in PTG.
现有关于创伤后成长的文献支持了深思熟虑的反刍思维（DR）在侵入性反刍思维（IR）和创伤后成长（PTG）之间的中介作用。然而，仅有有限的研究考察了反刍思维和创伤后成长的变化成分之间的相互作用，这限制了我们对特定时间点上瞬间关联的理解。因此，本研究旨在将反刍思维和创伤后成长变量区分为截距和斜率因素，并检验中介效应。参与者为从亚马逊土耳其机器人平台招募的552名成年人（M = 38.27，SD = 12.15）。数据收集总共在九个时间点进行，从2020年4月开始，到2023年4月结束。与现有的横断面研究一致，我们发现了一个完全中介模型，其中DR在时间1测量时中介了IR与PTG之间的关系。然而，我们发现数据时间1测量的这些分数均与反刍思维和创伤后成长的变化成分无关。同样，当关注变化成分时，我们通过DR确定了IR与PTG之间的一个完全中介模型。然而，未发现与变量的时间1分数有显著关联。这些结果凸显了在预测创伤后成长变化时关注反刍思维变化的重要性，并支持随着时间推移持续进行有意的反刍思维，以预测创伤后成长的未来变化。
