The core features of borderline personality disorder (BPD) include problematic interpersonal relationships, behavioral and affective dysregulation, identity problems, and cognitive dysregulation. Cognitive dysregulation, such as catastrophizing, rumination, and thought suppression, contributes to emotion dysregulation in BPD. Previous research suggested that thought suppression fully mediated the relationship between negative affect intensity/reactivity and BPD symptoms. We predicted that catastrophizing similarly will serve as a mediator between negative affect intensity/reactivity and BPD symptoms. Two samples completed the study. First, students (N = 191) self-selected to participate in an online study through the university psychology research recruitment system. Additionally, a second sample using Amazon Mechanical Turk (MTurk; N = 172) was utilized. Catastrophizing partially mediated the relationship between negative affect intensity/reactivity and BPD symptoms. Across these samples, results suggest that catastrophizing may have a significant role in understanding BPD symptoms, which is similar with rumination. Limitations and future directions are also discussed.

中文翻译：

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灾难性、消极情感和边缘型人格障碍

边缘型人格障碍 (BPD) 的核心特征包括有问题的人际关系、行为和情感失调、身份问题和认知失调。认知失调，如灾难化、反刍和思想抑制，会导致 BPD 的情绪失调。先前的研究表明，思想抑制完全介导了负面影响强度/反应性与 BPD 症状之间的关系。我们预测，灾难性同样将充当负面影响强度/反应性和 BPD 症状之间的中介。两个样品完成了研究。一、学生（N = 191）通过大学心理学研究招聘系统自选参加在线学习。此外，使用了使用 Amazon Mechanical Turk (MTurk; N  = 172) 的第二个样本。灾难化部分介导了负面影响强度/反应性与 BPD 症状之间的关系。在这些样本中，结果表明灾难化可能在理解 BPD 症状方面发挥重要作用，这与反刍相似。还讨论了限制和未来的方向。