Institute of Human Neuroscience, Cornell University.
Psychol Bull. 2016 Dec;142(12):1315-1351. doi: 10.1037/bul0000077. Epub 2016 Oct 17.
False memories are influenced by a variety of factors, but emotion is a variable of special significance, for theoretical and practical reasons. Interestingly, emotion's effects on false memory depend on whether it is embedded in the content of to-be-remembered events or in our moods, where mood is an aspect of the context in which events are encoded. We sketch the theoretical basis for this content-context dissociation and then review accumulated evidence that content and context effects are indeed different. Paradoxically, we find that in experiments on spontaneous and implanted false memories, negatively valenced content foments distortion, but negatively valenced moods protect against it. In addition, correlational data show that enduring negative natural moods (e.g., depression) foment false memory. Current opponent-process models of false memory, such as fuzzy-trace theory, are able to explain the content-context dissociation: Variations in emotional content primarily affect memory for the gist of events, whereas variations in emotional context primarily affect memory for events' exact verbatim form. Important questions remain about how these effects are modulated by variations in memory tests and in arousal. Promising methods of tackling those questions are outlined, especially designs that separate the gist and verbatim influences of emotion. (PsycINFO Database Record
虚假记忆受到多种因素的影响,但出于理论和实践的原因,情绪是一个特别重要的变量。有趣的是,情绪对虚假记忆的影响取决于它是嵌入到要记住的事件的内容中,还是嵌入到我们的情绪中,而情绪是事件编码时所处背景的一个方面。我们概述了这种内容-背景分离的理论基础,然后回顾了积累的证据,证明内容和背景的影响确实不同。矛盾的是,我们发现,在自发和植入虚假记忆的实验中,负性情绪内容会引发扭曲,但负性情绪状态会对此起到保护作用。此外,相关数据表明,持久的负性自然情绪(如抑郁)会引发虚假记忆。目前关于虚假记忆的对立过程模型,如模糊痕迹理论,能够解释内容-背景的分离:情绪内容的变化主要影响对事件要旨的记忆,而情绪背景的变化主要影响对事件确切逐字形式的记忆。关于这些影响如何受到记忆测试和唤醒变化的调节,仍然存在重要问题。概述了一些有前途的解决这些问题的方法,特别是那些能够分离情绪的主旨和逐字影响的设计。