Resolving the bouba-kiki effect enigma by rooting iconic sound symbolism in physical properties of round and spiky objects - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Scientific Reports Année : 2022

Resolving the bouba-kiki effect enigma by rooting iconic sound symbolism in physical properties of round and spiky objects

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The “bouba-kiki effect”, where “bouba” is perceived round and “kiki” spiky, remains a puzzling enigma. We solve it by combining mathematical findings largely unknown in the field, with computational models and novel experimental evidence. We reveal that this effect relies on two acoustic cues: spectral balance and temporal continuity. We demonstrate that it is not speech-specific but rather rooted in physical properties of objects, creating audiovisual regularities in the environment. Round items are mathematically bound to produce, when hitting or rolling on a surface, lower-frequency spectra and more continuous sounds than same-size spiky objects. Finally, we show that adults are sensitive to such regularities. Hence, intuitive physics impacts language perception and possibly language acquisition and evolution too.
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hal-03928938 , version 1 (08-01-2023)

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Mathilde Fort, Jean-Luc Schwartz. Resolving the bouba-kiki effect enigma by rooting iconic sound symbolism in physical properties of round and spiky objects. Scientific Reports, 2022, 12 (1), pp.19172. ⟨10.1038/s41598-022-23623-w⟩. ⟨hal-03928938⟩
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