Journal
JOURNAL OF COMPARATIVE PSYCHOLOGY
Volume 127, Issue 2, Pages 115-127Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/a0030595
Keywords
domestic dogs; gray wolves; object permanence; invisible displacements; domestication
Funding
- NSERC [203747-07]
- Universite de Moncton
- NSERC
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Recent evidence suggests that phylogenetic constraints exerted on dogs by the process of domestication have altered the ability of dogs to represent the physical world and the displacement of objects. In this study, invisible (Experiment 1) and visible (Experiment 2) displacement problems were administered to determine whether domestic dogs' and gray wolves' cognitive capacities to infer the position of a hidden object differ. The results revealed that adult dogs and wolves performed similarly in searching for disappearing objects: Both species succeeded the visible displacement tasks but failed the invisible displacement problems. We conclude that physical cognition for finding hidden objects in domestic dogs and gray wolves is alike and unrelated to the process of domestication.
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