Institute of Cognitive Neuroscience, UCL, Alexandra House, 17 Queen Square, London, WC1N 3AZ, UK.
School of Experimental Psychology, University of Oxford, Radcliffe Observatory Quarter, Woodstock Road, Oxford, OX2 6GG, UK.
Sci Rep. 2020 Feb 14;10(1):2700. doi: 10.1038/s41598-020-59633-9.
In this study, we investigated the effect of intergroup contact on processing of own- and other-race faces using functional Magnetic Resonance Imaging (fMRI). Previous studies have shown a neural own-race effect with greater BOLD response to own race compared to other race faces. In our study, white participants completed a social-categorization task and an individuation task while viewing the faces of both black and white strangers after having answered questions about their previous experiences with black people. We found that positive contact modulated BOLD activity in the right fusiform gyrus (rFG) and left inferior occipital gyrus (lIOC), regions associated with face processing. Within these regions, higher positive contact was associated with higher activity when processing black, compared to white faces during the social categorisation task. We also found that in both regions a greater amount of individuating experience with black people was associated with greater activation for black vs. white faces in the individuation task. Quantity of contact, implicit racial bias and negatively valenced contact showed no effects. Our findings suggest that positive contact and individuating experience directly modulate processing of out-group faces in the visual cortex, and illustrate that contact quality rather than mere familiarity is an important factor in reducing the own race face effect.
在这项研究中,我们使用功能磁共振成像(fMRI)研究了群体间接触对自身种族和其他种族面孔处理的影响。先前的研究表明,与其他种族的面孔相比,自身种族的面孔会引起更大的大脑活动。在我们的研究中,白人参与者在回答完关于他们与黑人之前的经历的问题后,观看了黑人和白人陌生人的面孔,同时完成了社会分类任务和个体化任务。我们发现,积极的接触调节了右侧梭状回(rFG)和左侧枕下回(lIOC)的大脑活动,这些区域与面孔处理有关。在这些区域中,与处理白色面孔相比,当处理黑人面孔时,积极接触程度越高,大脑活动就越高。我们还发现,在这两个区域中,与黑人的个体化经验越多,在个体化任务中,黑人面孔的激活程度就越高。接触的数量、内隐的种族偏见和负性接触都没有影响。我们的发现表明,积极的接触和个体化经验直接调节视觉皮层中对异族面孔的处理,并且说明接触质量而不仅仅是熟悉程度是减少自身种族面孔效应的一个重要因素。