Apes communicate about absent and displaced objects: methodology matters

Lyn, Heidi, Russell, Jamie L, Leavens, David A, Bard, Kim A, Boysen, Sarah T, Schaeffer, Jennifer A and Hopkins, William D (2014) Apes communicate about absent and displaced objects: methodology matters. Animal Cognition, 17 (1). pp. 85-94. ISSN 1435-9456

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Abstract

Displaced reference is the ability to refer to an item that has been moved (displaced) in space and/or time, and has been called one of the true hallmarks of referential communication. Several studies suggest that nonhuman primates have this capability, but a recent experiment concluded that in a specific situation (absent entities) human infants display displaced reference but chimpanzees do not. Here we show that chimpanzees and bonobos of diverse rearing histories are capable of displaced reference to absent and displaced objects. It is likely that some of the conflicting findings from animal cognition studies are due to relatively minor methodological differences, but are compounded by interpretation errors. Comparative studies are of great importance in elucidating the evolution of human cognition, however, greater care must be taken with methodology and interpretation for these studies to accurately reflect species differences.

Item Type: Article
Schools and Departments: School of Psychology > Psychology
Subjects: B Philosophy. Psychology. Religion > BF Psychology > BF0309 Consciousness. Cognition Including learning, attention, comprehension, memory, imagination, genius, intelligence, thought and thinking, psycholinguistics, mental fatigue
B Philosophy. Psychology. Religion > BF Psychology > BF0660 Comparative psychology. Animal and human psychology
Depositing User: David Leavens
Date Deposited: 30 May 2013 08:09
Last Modified: 12 Apr 2017 16:57
URI: http://sro.sussex.ac.uk/id/eprint/44409

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