Tonic Immobility Does Not Uniquely Predict Posttraumatic Stress Symptom Severity
Tonic Immobility Does Not Uniquely Predict Posttraumatic Stress Symptom Severity
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DOI：
10.1037/a0023272
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发表时间：
2012-05-01
影响因子：
6.3
通讯作者：
Asmundson, Gordon J. G.
中科院分区：
文献类型：
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作者：
Abrams, Murray P.;Carleton, R. Nicholas;Asmundson, Gordon J. G.
强直性不动（TI）是一种暂时性运动抑制的非自愿状态，被认为是对引起极度恐惧和不可避免的感知的事件的反应。人类TI已被记录在一系列创伤事件中，一些研究人员报告了TI和创伤后应激症状（PTSS）之间的关联;然而，目前尚不清楚TI是否是PTSS的唯一预测因子。本研究的目的是确定创伤后应激障碍的严重程度是否能解释创伤后应激障碍严重程度的差异，而不仅仅是创伤后应激障碍和特质焦虑的影响。参与者是在创伤事件期间报告TI的社区成员（n = 75; 88%为女性;年龄18-65，M-年龄= 31.49，SD = 12.21）。TI，创伤周围分离，特质焦虑作为一个更大的调查的一部分进行了评估。分层回归分析的结果表明，特质焦虑和创伤周围分离，但不是TI，是PTSS评分的显着和实质性的预测。在所有分析中，TI评分未能解释PTSS评分的显著差异（所有p> 0.05）。结果表明，TI结构可能增加很少的理解PTSS超出可以确定的评估创伤周围分离和特质焦虑。鉴于迄今为止的结果喜忧参半，需要进一步调查，以理清这些结构之间的共同点和不同点。
Tonic immobility (TI) is an involuntary state of temporary motor inhibition believed to occur in response to events that provoke extreme fear and the perception of inescapability. Human TI has been documented in a range of traumatic events and several researchers have reported associations between TI and posttraumatic stress symptoms (PTSS); however, it remains unclear if TI is a unique predictor of PTSS. This study was designed to determine whether TI severity would account for variance in PTSS severity over and above the influence of peritraumatic dissociation and trait anxiety. Participants were community members (n = 75; 88% women; ages 18-65, M-age = 31.49, SD = 12.21) who reported TI during a traumatic event. TI, peritraumatic dissociation, and trait anxiety were assessed as part of a larger investigation. Results of hierarchical regression analyses indicated trait anxiety and peritraumatic dissociation, but not TI, were significant and substantive predictors of PTSS scores. In all analyses TI scores failed to account for significant variance in PTSS scores (all ps > .05). Results suggest the TI construct may add little to understanding PTSS beyond what can be ascertained by assessing peritraumatic dissociation and trait anxiety. Given mixed findings to date, further investigation is required to disentangle what is shared and what is distinct among these constructs.