OBJECTIVE Digital delivery of mindfulness-based cognitive therapy through the Mindful Mood Balance (MMB) program is clinically effective (Segal et al., 2020); however, the mechanisms through which this program delivers its benefits have not been established. METHOD This study investigates the differential impact of the MMB program paired with usual depression care (UDC) compared to UDC alone on the putative targets of self-reported mindfulness, decentering, and rumination and the extent to which change in these targets mediates subsequent depressive relapse among a sample of predominantly White, female participants, with residual depressive symptoms. RESULTS The MMB program relative to UDC was associated with a significantly greater rate of change in decentering (t = 4.94, p < .0001, d = 0.46), mindfulness (t = 6.04, p < .0001, d = 0.56), and rumination (t = 3.82, p < .0001, d = 0.36). Subsequent depressive relapse also was mediated by prior change in these putative targets, with a significant natural indirect effect for decentering, χ2(1) = 7.25, p < .008, OR = 0.57; mindfulness, χ2(1) = 9.99, p < .002, OR = 0.50; and rumination, χ2(1) = 12.95, p < .001, OR = 0.35. CONCLUSIONS These findings suggest the mechanisms of MMB are consistent with the conceptual model for mindfulness-based cognitive therapy and depressive relapse risk and that such processes can be modified through digital delivery. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

中文翻译：

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基于在线正念认知治疗变化的中介因素：正念情绪平衡随机试验的二次分析。

目标 通过正念情绪平衡 (MMB) 计划以数字方式提供基于正念的认知治疗在临床上是有效的（Segal 等人，2020）；然而，该方案发挥效益的机制尚未建立。方法 本研究调查了 MMB 计划与常规抑郁症护理 (UDC) 相结合，与单独使用 UDC 相比，对自我报告的正念、偏心和沉思的假定目标的不同影响，以及这些目标的变化在多大程度上介导随后的抑郁症复发在一个主要是白人、女性参与者的样本中，有残留的抑郁症状。结果 相对于 UDC，MMB 计划与偏心 (t = 4.94，p < .0001，d = 0.46)、正念 (t = 6.04，p < .0001，d = 0.56) 和正念 (t = 6.04，p < .0001，d = 0.56) 和沉思（t = 3.82，p < .0001，d = 0.36）。随后的抑郁症复发也是由这些假定目标的先前变化介导的，对偏心有显着的自然间接影响，χ2(1) = 7.25，p < .008，OR = 0.57；正念，χ2(1) = 9.99，p < .002，OR = 0.50；和沉思，χ2(1) = 12.95，p < .001，OR = 0.35。结论 这些发现表明 MMB 的机制与基于正念的认知治疗和抑郁复发风险的概念模型一致，并且可以通过数字交付来修改此类过程。（PsycInfo 数据库记录 (c) 2023 APA，保留所有权利）。