Medical Research Council Cognition and Brain Sciences Unit, University of Cambridge, 15 Chaucer Road, Cambridge, CB2 7EF, UK.
Medical Research Council Cognition and Brain Sciences Unit, University of Cambridge, 15 Chaucer Road, Cambridge, CB2 7EF, UK.
Behav Res Ther. 2020 Mar;126:103551. doi: 10.1016/j.brat.2020.103551. Epub 2020 Jan 11.
This study examined the diversity of experienced positive and negative emotions - emodiversity - within two existing datasets involving female survivors of sexual abuse and assault, who all met criteria for chronic Posttraumatic Stress Disorder (PTSD) as well as a diversity of comorbid diagnoses. Study 1 investigated the structure of the self-concept and Study 2 explored the organization of past autobiographical knowledge. In each study, we measured emodiversity for positive and negative emotion constructs in the trauma sample, relative to healthy control participants with no history of sexual trauma or PTSD. Results confirmed our hypotheses that individuals with a severe sexual trauma history and resultant PTSD would show elevated negative emodiversity and reduced positive diversity across both the structure of the self-concept and the structure of the life narrative, relative to control participants. The current results differ from community studies where greater negative emodiversity is associated with better mental health but mirror those from a prior study with individuals with Major Depressive Disorder. This suggests that valence-based differences in emodiversity may result from chronic emotional disturbance.
本研究考察了两个现有数据集内经历的积极和消极情绪多样性——情绪多样性，这些数据集均包含性虐待和性侵犯的女性幸存者，她们都符合慢性创伤后应激障碍（PTSD）的标准，以及各种合并诊断。研究 1 调查了自我概念的结构，研究 2 则探索了过去自传式知识的组织。在每项研究中，我们都针对创伤样本中积极和消极情绪结构测量了情绪多样性，相对于没有性创伤或 PTSD 史的健康对照组参与者。结果证实了我们的假设，即有严重性创伤史和由此导致的 PTSD 的个体在自我概念和生活叙事的结构中，与对照组相比，表现出更高的负性情绪多样性和更低的正性多样性。目前的结果与社区研究不同，后者表明更多的负性情绪多样性与更好的心理健康相关，但与先前一项针对重度抑郁症患者的研究结果相似。这表明，情绪多样性的效价差异可能是由慢性情绪困扰引起的。
