title: Implicit attitudes in prosopagnosia.
abstract: We studied a male with acquired prosopagnosia using a battery of Implicit Association Tests (IATs) to investigate whether observing faces varying by social category would activate the patient's implicit social biases. We also asked him to categorize faces explicitly by race, gender, and political party. The patient, G.B., was marginally slower to categorize black compared to white faces. He showed congruency effects in the race and celebrity IATs, but not in the gender or political IATs. These results indicate that G.B. possesses an implicit social sensitivity to certain facial stimuli despite an inability to overtly recognize familiar faces. The results demonstrate that social biases can be retrieved based on facial stimuli via pathways bypassing the fusiform gyri. Thus the IAT effect can be added to the list of covert recognition effects found in prosopagnosia.
authors.affiliation: Cognitive Neuroscience Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, United States. knutsonk@ninds.nih.gov
authors.forename: Kristine M
authors.initials: KM
authors.lastname: Knutson
authors.forename: Karen A
authors.initials: KA
authors.lastname: DeTucci
authors.forename: Jordan
authors.initials: J
authors.lastname: Grafman
mesh_terms: D000063:Accidents, Traffic; D000328:Adult; D001244:Association; D001290:Attitude; D044383:Black People; D001930:Brain Injuries / Q000523:psychology; D004192:Discrimination, Psychological; D005006:Ethnicity; D056344:Executive Function; D005145:Face; D006801:Humans; D007361:Intelligence Tests; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D010775:Photic Stimulation; D010820:Physicians; D011057:Politics; D020238:Prosopagnosia / Q000523:psychology*; D044469:Racial Groups; D021641:Recognition, Psychology / Q000502:physiology; D012727:Sex Characteristics; D044465:White People