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  • Title: Recognizing impossible object relations: intuitions about support in chimpanzees (Pan troglodytes).
    Author: Cacchione T, Krist H.
    Journal: J Comp Psychol; 2004 Jun; 118(2):140-8. PubMed ID: 15250801.
    Abstract:
    Using looking-time measures, the authors examined untrained chimpanzees' (Pan troglodytes) ability to distinguish between adequate and inadequate support. In 3 experiments, the chimpanzees' sensitivity to different support relations between 2 objects was assessed. In each experiment, the chimpanzees saw a possible and an impossible test event, presented as digital video clips. Looking times in the 3 experiments suggest that chimpanzees use amount of contact between 2 objects, but not type of contact, to distinguish between adequate and inadequate support relations. These results indicate that chimpanzees have some intuition about support phenomena but their sensitivity to relational object properties may differ from that of human infants (Homo sapiens) in this domain.
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