Wang Zhenzhen, Tang Xinyi, Hu Amy, Chiu Wingsze, Hofmann Stefan G, Liu Xinghua
Beijing Key Laboratory of Behavior and Mental Health, School of Psychological and Cognitive Sciences, Peking University, Beijing, People's Republic of China.
Department of Psychology, Philipps University Marburg, Marburg, Germany.
Psychother Res. 2024 Nov 17:1-15. doi: 10.1080/10503307.2024.2426562.
To investigate the role of decentering as a mediator of the effect of mindfulness/mindfulness-based intervention (MBI) on emotional distress, we conducted cross-sectional and longitudinal designs.
In Study 1, a total of 998 participants with high emotional distress were included. Mindfulness, decentering, anxiety, and depression were measured at baseline. In Study 2, 688 participants with high emotional distress were randomized to a Mindfulness Intervention for Emotional Distress (MIED) group (N = 344) and a waitlist control (WL) group (N = 344). The same variables were assessed at pre-intervention, week 3, week 5, and post-intervention.
In the cross-sectional design, simple mediation analyses pointed to decentering as a significant mediator of the relationship between mindfulness and symptoms of anxiety and depression. In the longitudinal designs, repeated measures ANOVAs showed that decentering, anxiety, and depression significantly improved in the MIED group compared to WL group. Random-intercept cross-lagged panel models found that decentering and emotional distress reciprocally influenced each other. Longitudinal mediation analyses showed that decentering during the intervention significantly mediated the effect of the MIED program on alleviating emotional distress.
Decentering may potentially act as a pivotal mediator for alleviating emotional distress in MBIs.
为了研究去中心化作为正念/基于正念的干预（MBI）对情绪困扰影响的中介作用，我们进行了横断面研究和纵向研究设计。
在研究1中，共纳入998名情绪困扰程度高的参与者。在基线时测量正念、去中心化、焦虑和抑郁情况。在研究2中，688名情绪困扰程度高的参与者被随机分为情绪困扰正念干预（MIED）组（N = 344）和等待名单对照组（WL）组（N = 344）。在干预前、第3周、第5周和干预后评估相同的变量。
在横断面设计中，简单中介分析表明去中心化是正念与焦虑和抑郁症状之间关系的显著中介变量。在纵向设计中，重复测量方差分析表明，与WL组相比，MIED组的去中心化、焦虑和抑郁情况有显著改善。随机截距交叉滞后面板模型发现去中心化和情绪困扰相互影响。纵向中介分析表明，干预期间的去中心化显著中介了MIED项目对减轻情绪困扰的影响。
去中心化可能是减轻MBIs中情绪困扰的关键中介变量。
