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The role of featural processing in other-race face classification advantage: an ERP study
Zhenhua Liu1, Qinghua Zhang, Yan Li
1Department of Neurology, Provincial Hospital Affiliated to Shandong University, Jinan, P. R. China.
Abstract:
The current study investigated the time course of the other-race advantage (ORCA) in the subordinate classification of faces and isolated eyes by race. A significant ORCA was found on RTs to both full faces and isolated eyes and faces were classified faster and more accurate than eyes. The ERP data showed that for both stimuli the categorization processes follow basic level classification of physiognomic stimuli, which is not influenced by the stimulus race. The most conspicuous difference between own-race and other-race stimuli as well as between faces and isolated eyes was found in the modulation of the P3 component. The overall pattern of these modulations suggests that the classification of own-race faces is delayed. Since the amplitude of the P3 is sensitive primarily to the perceptual demands of a task, these data suggest that the delay of the own-race classification is caused by an own-race specific process that precedes or interferes with the subordinate classification.
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