Implicit attitudes in prosopagnosia

Kristine M. Knutson; Karen A. DeTucci; Jordan Grafman

doi:10.1016/j.neuropsychologia.2011.03.009

Implicit attitudes in prosopagnosia

Kristine M. Knutson^*, Karen A. DeTucci, Jordan Grafman

^*Corresponding author for this work

Physical Medicine and Rehabilitation

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

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.

Original language	English (US)
Pages (from-to)	1851-1862
Number of pages	12
Journal	Neuropsychologia
Volume	49
Issue number	7
DOIs	https://doi.org/10.1016/j.neuropsychologia.2011.03.009
State	Published - Jun 2011

Funding

We thank G.B. for his participation, Joshua Poore for his comments on an earlier manuscript, Tianxia Wu for her statistical guidance, and the anonymous reviewers for their insightful comments. This study was supported by the Intramural Research Program of the National Institute of Neurological Disorders and Stroke, National Institutes of Health . The authors declare no conflict of interest. Some of the faces were obtained from the MacBrain Face Stimulus Set. Development of the MacBrain Face Stimulus Set was overseen by Nim Tottenham and supported by the John D. and Catherine T. MacArthur Foundation Research Network on Early Experience and Brain Development. Please contact Nim Tottenham at [email protected] for more information concerning the stimulus set. The Caltech Frontal face dataset (Faces 1999) was collected by Markus Weber at the California Institute of Technology and can be obtained at http://www.vision.caltech.edu/html-files/archive.html .

Keywords

Brain lesions
Implicit attitudes
Prosopagnosia
Social cognition
Traumatic brain injury

ASJC Scopus subject areas

Experimental and Cognitive Psychology
Cognitive Neuroscience
Behavioral Neuroscience

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10.1016/j.neuropsychologia.2011.03.009

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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.",

keywords = "Brain lesions, Implicit attitudes, Prosopagnosia, Social cognition, Traumatic brain injury",

author = "Knutson, {Kristine M.} and DeTucci, {Karen A.} and Jordan Grafman",

note = "Funding Information: We thank G.B. for his participation, Joshua Poore for his comments on an earlier manuscript, Tianxia Wu for her statistical guidance, and the anonymous reviewers for their insightful comments. This study was supported by the Intramural Research Program of the National Institute of Neurological Disorders and Stroke, National Institutes of Health . The authors declare no conflict of interest. Some of the faces were obtained from the MacBrain Face Stimulus Set. Development of the MacBrain Face Stimulus Set was overseen by Nim Tottenham and supported by the John D. and Catherine T. MacArthur Foundation Research Network on Early Experience and Brain Development. Please contact Nim Tottenham at [email protected] for more information concerning the stimulus set. The Caltech Frontal face dataset (Faces 1999) was collected by Markus Weber at the California Institute of Technology and can be obtained at http://www.vision.caltech.edu/html-files/archive.html .",

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N2 - 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.

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Implicit attitudes in prosopagnosia

Abstract

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Keywords

ASJC Scopus subject areas

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