Journal
FOLIA PRIMATOLOGICA
Volume 81, Issue 4, Pages 224-232Publisher
KARGER
DOI: 10.1159/000322118
Keywords
Chimpanzee; Nut-cracking skill acquisition; Video; Master-apprentice relationship; Human demonstration
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Funding
- Leo S. Guthman Foundation
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Chimpanzees acquire nut-cracking skills by observation and trial and error. Studies of captive chimpanzees have shown the effectiveness of a skilled demonstrator. We examined the effectiveness of 3 live demonstration forms from which subjects could learn nut-cracking skills: a video of proficient conspecifics, human demonstration and the presence of a skilled conspecific performing the task. A male subject did not learn to crack open nuts after viewing a video of proficient conspecifics but quickly learned the skill following a demonstration by a human facilitator. Subsequently, 4 female chimpanzees were given the opportunity to learn the skill from the now proficient male, as well as from a video and human demonstration, but failed to do so. Copyright (C) 2010 S. Karger AG, Basel
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