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Learning from communication versus observation in great apes
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Context, not sequence order, affects the meaning of bonobo (Pan paniscus) gestures
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Bo-NO-bouba-kiki : picture-word mapping but no spontaneous sound symbolic speech-shape mapping in a language trained bonobo
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Abstract:
This work was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy through EXC 2025/1 ‘Matters of Activity (MoA)’ and by the ‘The Sound of Meaning (SOM)’, Pu 97/22–1 and ‘Phonological Networks (PhoNet)’, Pu 97/25-1. K.M. was supported by the Berlin School of Mind and Brain, by the Onassis foundation, and by the Fyssen foundation. M.A. was supported by the European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013)/ERC grant agreement no. 609819, SOMICS. ; Humans share the ability to intuitively map ‘sharp’ or ‘round’ pseudowords, such as ‘bouba’ versus ‘kiki’, to abstract edgy versus round shapes, respectively. This effect, known as sound symbolism, appears early in human development. The phylogenetic origin of this phenomenon, however, is unclear: are humans the only species capable of experiencing correspondences between speech sounds and shapes, or could similar effects be observed in other animals? Thus far, evidence from an implicit matching experiment failed to find evidence of this sound symbolic matching in great apes, suggesting its human uniqueness. However, explicit tests of sound symbolism have never been conducted with nonhuman great apes. In the present study, a language-competent bonobo completed a cross-modal matching-to-sample task in which he was asked to match spoken English words to pictures, as well as ‘sharp’ or ‘round’ pseudowords to shapes. Sound symbolic trials were interspersed among English words. The bonobo matched English words to pictures with high accuracy, but did not show any evidence of spontaneous sound symbolic matching. Our results suggest that speech exposure/comprehension alone cannot explain sound symbolism. This lends plausibility to the hypothesis that biological differences between human and nonhuman primates could account for the putative human specificity of this effect. ; Publisher PDF ; Peer reviewed
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Keyword:
BF; BF Psychology; Bouba-kiki; DAS; Kanzi; Language evolution; Neuroscience and cognition; QL; QL Zoology; Research articles; Sound symbolism
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URL: https://doi.org/10.1098/rspb.2021.1717 https://doi.org/10.6084/m9.figshare.18737487.v1 http://hdl.handle.net/10023/24821
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Collective knowledge and the dynamics of culture in chimpanzees
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Chimpanzees combine pant hoots with food calls into larger structures
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The vocal repertoire of pale spear-nosed bats in a social roosting context
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Chimpanzee lip-smacks confirm primate continuity for speech-rhythm evolution
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Chestnut-crowned babbler calls are composed of meaningless shared building blocks
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Bonobo and chimpanzee gestures overlap extensively in meaning
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Cumulative culture in nonhumans : overlooked findings from Japanese monkeys?
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Speech-like rhythm in a voiced and voiceless orangutan call
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A gestural repertoire of 1-2year old human children : in search of the ape gestures
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Internal acoustic structuring in pied babbler recruitment cries specifies the form of recruitment
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Sensitivity to relational similarity and object similarity in apes and children
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Zoonotic diagrams : mastering and unsettling human-animal relations
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Titi semantics : context and meaning in Titi monkey call sequences
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