title: Sensitivity to Relational Similarity and Object Similarity in Apes and Children.
abstract: Relational reasoning is a hallmark of sophisticated cognition in humans. Does it exist in other primates? Despite some affirmative answers, there appears to be a wide gap in relational ability between humans and other primates--even other apes. Here, we test one possible explanation for this gap, motivated by developmental research showing that young humans often fail at relational reasoning tasks because they focus on objects instead of relations. When asked, "duck:duckling is like tiger:?," preschool children choose another duckling (object match) rather than a cub. If other apes share this focus on concrete objects, it could undermine their relational reasoning in similar ways. To test this, we compared great apes and 3-year-old humans' relational reasoning on the same spatial mapping task, with and without competing object matches. Without competing object matches, both children and Pan species (chimpanzees and bonobos) spontaneously used relational similarity, albeit children more so. But when object matches were present, only children responded strongly to them. We conclude that the relational gap is not due to great apes' preference for concrete objects. In fact, young humans show greater object focus than nonhuman apes.
authors: Department of Psychology, Swarthmore College, Swarthmore, PA 19081, USA. Electronic address: christie@swarthmore.edu.
authors: Stella
authors: S
authors: Christie
authors: Department of Psychology, Northwestern University, Evanston, IL 60208, USA.
authors: Dedre
authors: D
authors: Gentner
authors: School of Psychology and Neuroscience, University of St. Andrews, St. Andrews KY16 9JP, UK; Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany.
authors: Josep
authors: J
authors: Call
authors: Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany; Department of Early Child Development and Culture and Leipzig Research Center for Early Child Development, University of Leipzig, 04109 Leipzig, Germany.
authors: Daniel Benjamin Moritz
authors: DB
authors: Haun
mesh_terms: D000818:Animals; D002675:Child, Preschool; D003071:Cognition; D006801:Humans; D019974:Pan paniscus / Q000523:psychology*; D002679:Pan troglodytes / Q000523:psychology*; D057080:Pongo abelii / Q000523:psychology*; D011340:Problem Solving; D011897:Random Allocation