Journal
BEHAVIOURAL PROCESSES
Volume 89, Issue 1, Pages 52-60Publisher
ELSEVIER
DOI: 10.1016/j.beproc.2011.10.010
Keywords
Continuity; Dissociation; Gravity bias; Inhibitory control; Solidity
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Perception-based measures often reveal much earlier competencies than action-based approaches. We explored this phenomenon generally labeled as knowledge dissociation in 28 common marmoset monkeys (Callithrix jacchus) using a paradigm where subjects had to localize a food item dropped down an opaque tube. Experiments 1 and 2 assessed common marmoset monkeys' gravity bias in an action based version of the tubes task. Experiments 3 and 4 investigated whether marmosets' performance increases in an action-free task context where they simply look at objects falling down a tube. The results suggest that common marmosets have some intuition of continuity/solidity constraints when tested with perception based measures even though these principles do not appear to guide their search for falling objects. (C) 2011 Elsevier B.V. All rights reserved.
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