Neural correlates of automatic beliefs about gender and race.
Functional MRI was used to identify the brain areas underlying automatic beliefs about gender and race, and suppression of those attitudes. Participants (n = 20; 7 females) were scanned at 3 tesla while performing the Implicit Association Test (IAT), an indirect measure of race and gender bias. We hypothesized that ventromedial prefrontal cortex areas (PFC) would mediate gender and racial stereotypic attitudes, and suppression of these beliefs would recruit dorsolateral prefrontal cortex (DLPFC) and the anterior cingulate cortex (ACC). Performance data on the IAT revealed gender and racial biases. Racial bias was correlated with an explicit measure of racism. Results showed activation of anteromedial PFC and rostral ACC while participants implicitly made associations consistent with gender and racial biases. In contrast, associations incongruent with stereotypes recruited DLPFC. Implicit gender bias was correlated with amygdala activation during stereotypic conditions. Results suggest there are dissociable roles for anteromedial and dorsolateral PFC circuits in the activation and inhibition of stereotypic attitudes.
Knutson
Kristine M
KM
Cognitive Neuroscience Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892-1440, USA.
Mah
Linda
L
Manly
Charlotte F
CF
Grafman
Jordan
J
D000328:Adult; D000679:Amygdala / Q000033:anatomy & histology / Q000502:physiology; D001244:Association; D001290:Attitude; D001931:Brain Mapping; D003469:Culture; D004292:Dominance, Cerebral / Q000502:physiology; D004644:Emotions / Q000502:physiology; D005260:Female; D006179:Gyrus Cinguli / Q000033:anatomy & histology / Q000502:physiology; D006801:Humans; D007600:Judgment / Q000502:physiology*; D008279:Magnetic Resonance Imaging; D008297:Male; D009434:Neural Pathways / Q000502:physiology; D009483:Neuropsychological Tests; D017397:Prefrontal Cortex / Q000033:anatomy & histology / Q000502:physiology*; D011287:Prejudice; D012727:Sex Characteristics; D012933:Social Identification; D012938:Social Perception; D013240:Stereotyping