Department of Psychology, University of North Texas, Denton, TX, USA.
Department of Community Mental Health, University of Haifa, Israel.
J Anxiety Disord. 2020 Jan;69:102157. doi: 10.1016/j.janxdis.2019.102157. Epub 2019 Nov 6.
Positive memory characteristics relate to posttraumatic stress disorder (PTSD) severity. We utilized a network approach to examine relations between PTSD clusters (intrusions, avoidance, negative alterations in cognitions and mood [NACM], alterations in arousal and reactivity [AAR]) and positive memory characteristics (count, accessibility, valence, vividness, coherence, time perspective, sensory details). We identified differential relations between PTSD clusters and positive memory characteristics, and central/bridging symptoms. Participants were an Amazon Mechanical Turk-recruited sample of 206 individuals (M = 35.36; 61.20% females). We estimated a regularized Gaussian Graphic Model comprising four nodes representing the PTSD clusters and six nodes representing positive memory characteristics. Regarding cross-community relations, AAR (highest node strength) was negatively associated with positive memory count, valence, coherence, and accessibility; avoidance was positively and negatively associated with positive memory vividness and count respectively. The NACM-AAR and intrusion-avoidance edges were significantly stronger than most edges. From the PTSD community, AAR and avoidance had the highest bridge strength and bridge expected influence respectively; from the positive memory community, coherence and vividness had the highest bridge strength and bridge expected influence respectively. Results indicate the potential pivotal role of AAR, avoidance, coherence, and vividness in the PTSD-positive memory relation, which renders them assessment/treatment targets pending further investigation.
积极记忆特征与创伤后应激障碍（PTSD）严重程度有关。我们采用网络方法来研究 PTSD 集群（侵入、回避、认知和情绪的负性改变[NACM]、觉醒和反应性改变[AAR]）与积极记忆特征（数量、可及性、效价、生动性、连贯性、时间观、感官细节）之间的关系。我们确定了 PTSD 集群和积极记忆特征以及核心/桥梁症状之间的差异关系。参与者是亚马逊 Mechanical Turk 招募的 206 名个体（M=35.36；61.20%为女性）的样本。我们估计了一个包含四个节点的正则化高斯图形模型，代表 PTSD 集群，以及六个节点代表积极记忆特征。关于交叉社区关系，AAR（最高节点强度）与积极记忆数量、效价、连贯性和可及性呈负相关；回避与积极记忆生动性和数量分别呈正相关和负相关。NACM-AAR 和侵入回避边缘明显强于大多数边缘。从 PTSD 社区来看，AAR 和回避具有最高的桥接强度和桥接预期影响；从积极记忆社区来看，连贯性和生动性具有最高的桥接强度和桥接预期影响。结果表明，AAR、回避、连贯性和生动性在 PTSD-积极记忆关系中具有潜在的关键作用，这使它们成为评估/治疗的目标，有待进一步研究。
