Sensitivity to relational similarity and object similarity in apes and children

Stella Christie*, Dedre Gentner, Josep Call, Daniel Benjamin Moritz Haun

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


Relational reasoning is a hallmark of sophisticated cognition in humans [1, 2]. Does it exist in other primates? Despite some affirmative answers [3-11], there appears to be a wide gap in relational ability between humans and other primates - even other apes [1, 2]. 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 [12-14]. 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.

Original languageEnglish (US)
Pages (from-to)531-535
Number of pages5
JournalCurrent Biology
Issue number4
StatePublished - Feb 22 2016

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology
  • General Agricultural and Biological Sciences


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