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Sign acquisition in a home‐reared/free‐ranging orangutan: Comparisons with other signing apes
Author(s) -
Shapiro Gary L.
Publication year - 1982
Publication title -
american journal of primatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.988
H-Index - 81
eISSN - 1098-2345
pISSN - 0275-2565
DOI - 10.1002/ajp.1350030111
Subject(s) - gorilla , sign (mathematics) , pongo pygmaeus , communication , zoology , biology , psychology , mathematics , mathematical analysis , paleontology
A young female orangutan that was maintained in a home‐reared/free‐ranging environment acquired 37 signs (Ameslan) after 19 months of training. Analysis and qualitative comparison of the initially produced signs revealed that an orangutan developed a vocabulary of signs in a manner similar to that of a chimpanzee and gorilla. This substantiates the general pongid ability to acquire manual signs.