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Vlamings, Petra H. J. M., Uher, Jana ORCID: 0000-0003-2450-4943 and Call, Josep (2006) How the great apes (Pan troglodytes, Pongo pygmaeus, Pan paniscus, and Gorilla gorilla) perform on the reversed contingency task: The effects of food quantity and food visibility. Journal of Experimental Psychology: Animal Behavior Processes, 32 (1). pp. 60-70. ISSN 0097-7403 (Print), 1939-2184 (Online) (doi:https://doi.org/10.1037/0097-7403.32.1.60)