Department of Psychology, New York University, 6 Washington Place, New York, NY 10003, USA.
Cognition. 2012 Nov;125(2):309-16. doi: 10.1016/j.cognition.2012.07.007. Epub 2012 Aug 3.
There is extensive evidence that emotional-especially threatening-stimuli rapidly capture attention. These findings are often explained in terms of a hard-wired and relatively inflexible fear module. We propose an alternative, more flexible mechanism, arguing that motivational relevance is the crucial factor driving rapid attentional orienting. To test our hypothesis, we endowed initially neutral face stimuli with relevance by randomly assigning them to a social in-group or out-group during a 1-min learning phase, and used these faces as cues in a dot probe task to measure rapid attentional orienting. Across three experiments, we observed attentional orienting toward faces assigned to the out-group. Initial rapid orienting (after 100 ms, Experiments 1 and 2) was observed only for familiar faces for which group membership was explicitly encoded, suggesting that rapid orienting may be based on affectively charged memory traces. At a later time point (after 500 ms, Experiment 3), attention was deployed toward unfamiliar faces sharing a physical attribute (background color) with the familiar out-group faces, suggesting a more time-consuming on-line appraisal of the stimulus. The amount of attentional bias to out-group faces was correlated with individual differences in the accessibility of group identification. Our findings demonstrate that attentional prioritization mechanisms can be flexibly tuned by a brief learning phase of social identity. This is consistent with the idea that attention mechanisms subserving the selection and prioritization of emotional aspects of the environment are not static and hard-wired, but may rapidly adapt to recent changes in motivational contingencies.
有大量证据表明,情绪——尤其是威胁性刺激——会迅速吸引注意力。这些发现通常可以用一个固定的、相对灵活的恐惧模块来解释。我们提出了一个替代的、更灵活的机制,认为动机相关性是驱动快速注意力定向的关键因素。为了检验我们的假设,我们在 1 分钟的学习阶段,通过随机将最初中性的面部刺激分配到社会内群体或外群体中,赋予这些面部刺激相关性,并将这些面部刺激作为线索,在点探测任务中测量快速注意力定向。在三个实验中,我们观察到对外群体面部刺激的注意力定向。只有当熟悉的面部刺激被明确编码为群体成员时,才会观察到最初的快速定向(在 100 毫秒后,实验 1 和 2),这表明快速定向可能基于情感上的记忆痕迹。在稍后的时间点(在 500 毫秒后,实验 3),注意力会被分配到与熟悉的外群体面部刺激具有相同物理属性(背景颜色)的不熟悉的面部刺激上,这表明对外界刺激的在线评估需要更多的时间。对外群体面部刺激的注意力偏差程度与群体认同的可及性个体差异相关。我们的研究结果表明,注意力优先化机制可以通过短暂的社会认同学习阶段进行灵活调节。这与注意力机制可以支持环境中情感方面的选择和优先化的观点一致,即注意力机制不是静态和固定的,而是可以快速适应动机关系的最近变化。