Tool choice on the basis of rigidity in capuchin monkeys. Una ricerca ISTC-CNR e Max Planck Institute for Evolutionary Anthropology
Depicted a capuchin monkey pointing at the desired tool on the sliding platform facing compartment C, while the reward platform is facing compartment A. The sliding doors separating the compartments A, B, and C are open at the time the subject makes her choice. Tool choice on the basis of rigidity in capuchin monkeys Héctor Marín Manrique (Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany), Gloria Sabbatini (Institute of Cognitive Sciences and Technologies of CNR, Rome, Italy), Josep Call (Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany), Elisabetta Visalberghi (Institute of Cognitive Sciences and Technologies of CNR, Rome, Italy). Animal Cognition; published online: 6 May 2011; © Springer-Verlag 2011). Abstract Wild capuchin monkeys select stone tools to crack open nuts on the basis of their weight and friability, two non-visual functional properties. Here, we investigated whether they would select new stick-like tools on the basis of their rig...