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2015 ; 77
(11
): 1143-8
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Multimodal communication in chimpanzees
#MMPMID26212686
Taglialatela JP
; Russell JL
; Pope SM
; Morton T
; Bogart S
; Reamer LA
; Schapiro SJ
; Hopkins WD
Am J Primatol
2015[Nov]; 77
(11
): 1143-8
PMID26212686
show ga
A fundamental characteristic of human language is multimodality. In other words,
humans use multiple signaling channels concurrently when communicating with one
another. For example, people frequently produce manual gestures while speaking,
and the words a person perceives are impacted by visual information. For this
study, we hypothesized that similar to the way that humans regularly couple their
spoken utterances with gestures and facial expressions, chimpanzees regularly
produce vocalizations in conjunction with other communicative signals. To test
this hypothesis, data were collected from 101 captive chimpanzees living in
mixed-sex social groupings of seven to twelve individuals. A total of 2,869 vocal
events were collected. The data indicate that approximately 50% of the vocal
events were produced in conjunction with another communicative modality. In
addition, approximately 68% were directed to a specific individual, and these
directed vocalizations were more likely to include a signal from another
communicative modality than were vocalizations that were not directed to a
specific individual. These results suggest that, like humans, chimpanzees often
pair their vocalizations with signals from other communicative modalities. In
addition, chimpanzees appear to use their communicative signals strategically to
meet specific socio-communicative ends, providing support for the growing
literature that indicates that at least some chimpanzee vocal signaling is
intentional.
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