title: Dissociation between seeing and acting: insights from common marmosets (Callithrix jacchus).
abstract: 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.
authors.affiliation: Department of Psychology, Cognitive and Developmental Psychology, University of Zurich, Binzmühlestrasse 14/21, CH-8050 Zurich, Switzerland. trix.cacchione@uzh.ch
authors.forename: Trix
authors.initials: T
authors.lastname: Cacchione
authors.forename: Judith Maria
authors.initials: JM
authors.lastname: Burkart
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology*; D002144:Callithrix; D003071:Cognition / Q000502:physiology*; D019545:Intuition; D011340:Problem Solving / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology