subordinate categorization requires conscious awareness
DESCRIPTION
Subordinate Categorization Requires Conscious Awareness. Ido Amihai, Leon Deouell, and Shlomo Bentin. Introduction. Faces can be discriminated from other objects, even when they are not consciously visible - PowerPoint PPT PresentationTRANSCRIPT
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Subordinate Categorization Requires Conscious Awareness
Ido Amihai, Leon Deouell, and Shlomo Bentin
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Introduction• Faces can be
discriminated from other objects, even when they are not consciously visible
• However, it is not
clear which type of subordinate information is processed (identity? Race? Gender? Expression? Just categorical?)
Morris, J.P., Pelphrey, K.A. & McCarthy, G. (2007). Processing without awareness in the right fusiform gyrus. Neuropsychologia
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Methods: Gender and Race Adaptation (Webster, Kaping, Mizokami & Kuhamel, 2004)
Adaptor (male/female) Target (unclear gender)
Adaptation effect = (%adaptor and target were incongruent ) - (%adaptor and target were congruent)
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MethodsFemale male
Asian European
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CFS (invisible)
No CFS (visible)
1000 / 2500 / 4000 / 5000 ms
Dominant
Methods
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CFS (invisible)
No CFS (visible)
1000 / 2500 / 4000 / 5000 ms
Dominant
Methods
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CFS (invisible)
No CFS (visible)
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Dominant
Methods
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CFS (invisible)
No CFS (visible)
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Dominant
Methods
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Methods
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CFS (invisible)
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CFS (invisible)
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CFS (invisible)
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CFS (invisible)
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CFS (invisible)
No CFS (visible)
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Dominant
Methods
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Gender
Race
Non Dominant
Methods
1000 / 2500 / 4000 / 5000 ms
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300ms (ISI)
Dominant
300ms (ISI)
Methods
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300ms (ISI)
Dominant
300ms (ISI)
Methods
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Predictions
• The occurrence of a bias when the adaptor is invisible would indicate that information about gender and race can be extracted from invisible faces.
• If the bias would occur only when the adaptors are visible, it would mean that such information is dependent on conscious awareness.
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Results
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**
*
* **
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The Correlation between effect size and visibility
p = 0.12 p < 0.025
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Summary
• The goal of the present study was to determine whether information about race and gender can be processed without awareness.
• We examined whether the presentation of adaptor faces can bias the classification of an ambiguous face’s gender or race when the adaptor is not consciously visible.
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Conclusions
• An adaptation effect occurred that correlates and increases with subjective visibility.
• Information about a faces gender and race depends on the amount of time that a face is subjectively visible for.