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ERIC Number: EJ890985
Record Type: Journal
Publication Date: 2010-Aug
Pages: 13
Abstractor: As Provided
Reference Count: 0
ISSN: ISSN-0023-9690
Amodal Completion in Bonobos
Nagasaka, Yasuo; Brooks, Daniel I.; Wasserman, Edward A.
Learning and Motivation, v41 n3 p174-186 Aug 2010
We trained two bonobos to discriminate among occluded, complete, and incomplete stimuli. The occluded stimulus comprised a pair of colored shapes, one of which appeared to occlude the other. The complete and incomplete stimuli involved the single shape that appeared to have been partially covered in the occluded stimulus; the complete stimulus showed the full shape, whereas the incomplete stimulus showed the same portion of the shape that was visible in the occluded stimulus. The correct response was to select the two-part occluded stimulus. Consistent with amodal completion, the bonobos committed a higher percentage of errors to the complete stimuli than to the incomplete stimuli. As well, the percentage of errors to the complete stimuli rose after repeated training with several different shapes. Extensive experience with two-dimensional images enhances amodal completion of partially occluded stimuli in bonobos. (Contains 4 figures and 1 table.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A