Shackman Alexander J, Sarinopoulos Issidoros, Maxwell Jeffrey S, Pizzagalli Diego A, Lavric Aureliu, Davidson Richard J
Department of Psychology, University of Wisconsin-Madison, 59706, USA.
Emotion. 2006 Feb;6(1):40-61. doi: 10.1037/1528-3542.6.1.40.
On the basis of a review of the extant literature describing emotion-cognition interactions, the authors propose 4 methodological desiderata for studying how task-irrelevant affect modulates cognition and present data from an experiment satisfying them. Consistent with accounts of the hemispheric asymmetries characterizing withdrawal-related negative affect and visuospatial working memory (WM) in prefrontal and parietal cortices, threat-induced anxiety selectively disrupted accuracy of spatial but not verbal WM performance. Furthermore, individual differences in physiological measures of anxiety statistically mediated the degree of disruption. A second experiment revealed that individuals characterized by high levels of behavioral inhibition exhibited more intense anxiety and relatively worse spatial WM performance in the absence of threat, solidifying the authors' inference that anxiety causally mediates disruption. These observations suggest a revision of extant models of how anxiety sculpts cognition and underscore the utility of the desiderata.
基于对描述情绪与认知相互作用的现有文献的综述,作者提出了4条方法学上的必要条件,用于研究与任务无关的情绪如何调节认知,并展示了来自一项满足这些条件的实验的数据。与前额叶和顶叶皮质中与退缩相关的负面影响和视觉空间工作记忆(WM)的半球不对称性描述一致,威胁诱发的焦虑选择性地破坏了空间WM表现的准确性,而不是言语WM表现的准确性。此外,焦虑的生理测量中的个体差异在统计学上介导了破坏程度。第二个实验表明,以高行为抑制水平为特征的个体在没有威胁的情况下表现出更强烈的焦虑和相对较差的空间WM表现,巩固了作者关于焦虑因果介导破坏的推断。这些观察结果表明需要修订关于焦虑如何塑造认知的现有模型,并强调了这些必要条件的实用性。