Overgeneralized autobiographical memory and future thinking in combat veterans with posttraumatic stress disorder
Overgeneralized autobiographical memory and future thinking in combat veterans with posttraumatic stress disorder
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DOI：
10.1016/j.jbtep.2011.11.004
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发表时间：
2013-03-01
影响因子：
1.8
通讯作者：
Hirst, William
中科院分区：
文献类型：
--
作者：
Brown, Adam D.;Root, James C.;Hirst, William
背景资料：研究表明，患有创伤后应激障碍（PTSD）的个体倾向于回忆自传体记忆，情节特异性降低。越来越多的研究表明，回忆自传体记忆的机制与想象未来的机制有很大重叠。虽然在其他临床人群中已经观察到在回忆过去和想象未来方面存在共同的自传体缺陷，但这尚未在PTSD中进行研究。本研究探讨是否，相比，战斗创伤暴露的个人没有PTSD，那些与战斗相关的PTSD将更有可能产生过度概括的自传体记忆和想象的未来events.Method：持久/伊拉克自由行动（OEF/OIF）的退伍军人和没有PTSD提出了中性词线索，并指示产生记忆或想象未来的自传体事件。数字化记录的反应和编码的情节特异性和内容的水平相关的战斗traumature.Results：个体与PTSD更有可能产生过度概括的自传体记忆和未来的事件比个人没有PTSD，更有可能纳入内容与战斗回忆过去或思考未来。局限性：该研究的局限性包括横断面设计，排除了因果关系;缺乏非创伤暴露组，样本相对较小，参与者几乎全为男性，限制了对其他人群的普遍性。这些研究结果表明，PTSD患者在产生个人过去和未来事件时表现出类似的缺陷，这可能代表了一种先前未被研究的机制，涉及PTSD症状的维持。(C)2011爱思唯尔有限公司版权所有。
Background: Studies show that individuals with Posttraumatic Stress Disorder (PTSD) tend to recall autobiographical memories with decreased episodic specificity. A growing body of research has demonstrated that the mechanisms involved in recalling autobiographical memories overlap considerably with those involved in imagining the future. Although shared autobiographical deficits in remembering the past and imagining the future have been observed in other clinical populations, this has yet to be examined in PTSD. This study examined whether, compared to combat trauma-exposed individuals without PTSD, those with combat-related PTSD would be more likely to generate overgeneralized autobiographical memories and imagined future events.Method: Operation Enduring/Iraqi Freedom (OEF/OIF) veterans with and without PTSD were presented with neutral word cues and were instructed to generate memories or imagine future autobiographical events. Responses were digitally recorded and were coded for level of episodic specificity and content related to combat trauma.Results: Individuals with PTSD were more likely to generate overgeneral autobiographical memories and future events than individuals without PTSD, and were more likely to incorporate content associated with combat when remembering the past or thinking about the future.Limitation: Limitations of the study include a cross-sectional design, precluding causality; the lack of a non-trauma exposed group, relatively small sample, and almost all-male gender of participants, limiting the generalizability to other populations.Conclusion: These findings suggest that individuals with PTSD show similar deficits when generating personal past and future events, which may represent a previously unexamined mechanism involved in the maintenance of PTSD symptoms. (C) 2011 Elsevier Ltd. All rights reserved.