Recent theoretical advances have emphasized the commonality between rumination and worry, often referred to as repetitive negative thinking. Although not studied extensively, repetitive negative thinking may not only account for a substantial overlap between depression and anxiety symptoms but also encapsulate other constructs including one's tendency to experience unwanted intrusive thoughts or have low levels of mindfulness. In this study, 643 college students completed self-report questionnaire measures of repetitive negative thinking (the Habit Index of Negative Thinking) and other relevant constructs including rumination, worry, depression and anxiety symptoms, intrusive thoughts, and mindfulness. To analyze the data, we conducted systematic commonality analyses, which algebraically decomposed shared variances among these measures into various unique components. Results in Study 1 indicated that individual differences in repetitive negative thinking were explained largely by the overlap between rumination and worry, but also by some rumination-specific and worry-specific variance. Moreover, the shared variation in rumination and worry explained the frequencies of depression and anxiety symptoms and their overlap. We also found in Study 2 that repetitive negative thinking was positively related to intrusive thoughts and negatively related to mindfulness. These associations were mostly explained by shared variance with rumination and worry, but there was also some mindfulness-specific variance. These results suggest that repetitive negative thinking may indeed lie at the core of the comorbidity between depression and anxiety symptoms, but that it is also a broader construct that encompasses intrusive thoughts and low levels of mindfulness.

中文翻译：

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经诊断重复性否定性思维的证据及其与反省，忧虑，抑郁和焦虑症状的关联：共同性分析。

最近的理论进展强调了反省与担忧之间的共性，通常被称为重复否定性思维。尽管没有进行广泛的研究，但重复性否定思维不仅可以解释抑郁症和焦虑症之间的实质性重叠，而且可以封装其他结构，包括一个人可能会经历不需要的侵入性思维或低水平的正念。在这项研究中，643名大学生完成了重复性否定思维（否定思维的习惯指数）和其他相关构想的自我报告调查问卷，这些构想包括反省，忧虑，抑郁和焦虑症状，侵入性思维和正念。为了分析数据，我们进行了系统的共性分析，将这些度量之间的共享方差代数分解为各种独特的成分。研究1的结果表明，重复否定性思维的个体差异主要是由沉思和忧虑之间的重叠解释的，但也有一些因沉思而特定和因忧虑而引起的差异。此外，沉思和忧虑的共同变化解释了抑郁和焦虑症状的发生频率及其重叠。在研究2中，我们还发现重复的消极思维与侵入性思维正相关，而与正念消极相关。这些联系主要是通过共同的方差与沉思和忧虑来解释的，但也有一些针对正念的方差。