Three studies on configural face processing by chimpanzees

Bibliographic Collection: 
MOCA Reference, APE
Publication Type: Journal Article
Authors: Parr, Lisa A; Heintz, Matthew; Akamagwuna, Unoma
Year of Publication: 2006
Journal: Brain and cognition
Volume: 62
Issue: 1
Pagination: 30 - 42
Date Published: 2006/10/
Publication Language: eng
ISBN Number: 0278-26261090-2147

Previous studies have demonstrated the sensitivity of chimpanzees to facial configurations. Three studies further these findings by showing this sensitivity to be specific to second-order relational properties. In humans, this type of configural processing requires prolonged experience and enables subordinate-level discriminations of many individuals. Chimpanzees showed evidence of a composite-like effect for conspecific but not human faces despite extensive experience with humans. Chimpanzee face recognition was impaired only when manipulations targeted second-order properties. Finally, face processing was impaired when individual features were blurred through pixelation. Results confirm that chimpanzee face discrimination, like humans, depends on the integrity of second-order relational properties.

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Short Title: Brain Cogn
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