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Chimpanzees combine pant hoots with food calls into larger structures
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Chestnut-crowned babbler calls are composed of meaningless shared building blocks
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Chestnut-crowned babbler calls are composed of meaningless shared building blocks
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Multimodal communication and language origins : integrating gestures and vocalizations
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From animal communication to linguistics and back: insight from combinatorial abilities in monkeys and birds
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In: Origins of human language: continuities and splits with nonhuman primates ; https://hal-univ-rennes1.archives-ouvertes.fr/hal-01928023 ; Louis-Jean Boë; Joël Fagot; Pascal Perrier; Jean-Luc Schwartz. Origins of human language: continuities and splits with nonhuman primates, Peter Lang GmbH, 2018, Speech Production and Perception Vol. 4, 9783631737262 (2018)
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Internal acoustic structuring in pied babbler recruitment cries specifies the form of recruitment
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Exorcising Grice's ghost : an empirical approach to studying intentional communication in animals
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From animal communication to linguistics and back : insight from combinatorial abilities in monkeys and birds
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Exorcising Grice’s ghost : an empirical approach to studying intentional communication in animals
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Data from: Experimental evidence for phonemic contrasts in a nonhuman vocal system ...
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Exorcising Grice's ghost : an empirical approach to studying intentional communication in animals
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Meaningful call combinations and compositional processing in the Southern Pied Babbler
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Abstract:
Language’s expressive power is largely attributable to its compositionality: meaningful words are combined into larger/higher-order structures with derived meaning. Despite its importance, little is known regarding the evolutionary origins and emergence of this syntactic ability. Whilst previous research has demonstrated a rudimentary capability to combine meaningful calls in primates, due to a scarcity of comparative data, it is unclear whether analogue forms might also exist outside of primates. Here we address this ambiguity and provide evidence for rudimentary compositionality in the discrete vocal system of a social passerine, the pied babbler (Turdoides bicolor). Natural observations and predator presentations revealed babblers produce acoustically distinct alert calls in response to close, low-urgency threats, and recruitment calls when recruiting group members during locomotion. Upon encountering terrestrial predators both vocalisations are combined into a ‘mobbing-sequence’, potentially to recruit group members in a dangerous situation. To investigate whether babblers process the sequence in a compositional way, we conducted systematic experiments, playing back the individual calls in isolation, as well as naturally occurring and artificial sequences. Babblers reacted most strongly to mobbing-sequence playbacks, showing a greater attentiveness and a quicker approach to the loudspeaker, compared to individual calls or control sequences. We conclude the sequence constitutes a compositional structure, communicating information on both the context and the requested action. Our work supports previous research suggesting combinatoriality as a viable mechanism to increase communicative output, and indicates that the ability to combine and process meaningful vocal structures, a basic syntax, may be more widespread than previously thought.
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Keyword:
QL Zoology
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URL: https://doi.org/10.1073/pnas.1600970113 http://wrap.warwick.ac.uk/79530/ http://wrap.warwick.ac.uk/79530/1/WRAP_1472827-ps-060616-engesser_et_al_maintext_revision.pdf
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Experimental Evidence for Phonemic Contrasts in a Nonhuman Vocal System
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Experimental evidence for phonemic contrasts in a nonhuman vocal system
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Vocal learning in the functionally referential food grunts of chimpanzees
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