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Social Cognitive and Affective Neuroscience Advance Access originally published online on April 25, 2007
Social Cognitive and Affective Neuroscience 2007 2(3):189-198; doi:10.1093/scan/nsm012
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© The Author (2007). Published by Oxford University Press. For Permissions, please email: journals.permissions@oxfordjournals.org

Racial ingroup and outgroup attention biases revealed by event-related brain potentials

Cheryl L. Dickter1 and Bruce D. Bartholow2

1Department of Psychology, Union College and 2Department of Psychological Sciences, University of Missouri-Columbia, USA

Recent electrophysiological research indicates that perceivers differentiate others on the basis of race extremely quickly. However, most categorization studies have been limited to White participants, neglecting potential differences in processing between racial groups. Moreover, the extent to which race interferes with categorization along other dimensions when race is made irrelevant to a perceiver's task is not known. A gender categorization task was used to test the extent to which race information would implicitly interfere with explicit gender categorization. As predicted, behavioral and electrocortical data indicated that participants attended to both the task-relevant gender dimension and the task-irrelevant race dimension. Additionally, processing of target race differed between Black and White participants. Ingroup attention biases in the N200 component of the event-related brain potential facilitated target categorization, suggesting a potential functional role for early differentiation of ingroup and outgroup targets.

Keywords: social categorization; gender; race; Event-related potentials; implicit

Correspondence should be addressed to Cheryl L. Dickter, Department of Psychology, Union College, 807 Union St., Schenectady, NY 12308. E-mail: dickterc{at}union.edu

Received November 17, 2006. Accepted March 28, 2007.


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