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dc.contributor.authorGenty, Emilie Juliette Pauline
dc.contributor.authorBreuer, Thomas
dc.contributor.authorHobaiter, Catherine Louise
dc.contributor.authorByrne, Richard William
dc.identifier.citationGenty , E J P , Breuer , T , Hobaiter , C L & Byrne , R W 2009 , ' Gestural communication of the gorilla ( Gorilla gorilla ) : repertoire, intentionality, and possible origins ' , Animal Cognition , vol. 12 , no. 3 , pp. 527-546 .
dc.identifier.otherPURE: 454146
dc.identifier.otherPURE UUID: 18a30adc-f18a-4447-ab92-68a768484ccf
dc.identifier.otherWOS: 000265439700013
dc.identifier.otherScopus: 67349124869
dc.identifier.otherORCID: /0000-0002-3893-0524/work/46125078
dc.identifier.otherORCID: /0000-0001-9862-9373/work/60630580
dc.description.abstractSocial groups of gorillas were observed in three captive facilities and one African field site. Cases of potential gesture use, totalling 9,540, were filtered by strict criteria for intentionality, giving a corpus of 5,250 instances of intentional gesture use. This indicated a repertoire of 102 gesture types. Most repertoire differences between individuals and sites were explicable as a consequence of environmental affordances and sampling effects: overall gesture frequency was a good predictor of universality of occurrence. Only one gesture was idiosyncratic to a single individual, and was given only to humans. Indications of cultural learning were few, though not absent. Six gestures appeared to be traditions within single social groups, but overall concordance in repertoires was almost as high between as within social groups. No support was found for the ontogenetic ritualization hypothesis as the chief means of acquisition of gestures. Many gestures whose form ruled out such an origin, i.e. gestures derived from species-typical displays, were used as intentionally and almost as flexibly as gestures whose form was consistent with learning by ritualization. When using both classes of gesture, gorillas paid specific attention to the attentional state of their audience. Thus, it would be unwarranted to divide ape gestural repertoires into 'innate, species-typical, inflexible reactions' and 'individually learned, intentional, flexible communication'. We conclude that gorilla gestural communication is based on a species-typical repertoire, like those of most other mammalian species but very much larger. Gorilla gestures are not, however, inflexible signals but are employed for intentional communication to specific individuals.
dc.relation.ispartofAnimal Cognitionen
dc.rightsCopyright 2009, Springer-Verlag. This is the accepted version of the article. The final publication is available Open Access at Springer via
dc.subjectGreat apeen
dc.subjectAudience effectsen
dc.subjectYoung chimpanzeesen
dc.subjectWild chimpanzeesen
dc.titleGestural communication of the gorilla (Gorilla gorilla) : repertoire, intentionality, and possible originsen
dc.typeJournal articleen
dc.contributor.sponsorEuropean Commissionen
dc.contributor.institutionUniversity of St Andrews. School of Psychology and Neuroscienceen
dc.contributor.institutionUniversity of St Andrews. Centre for Social Learning & Cognitive Evolutionen
dc.description.statusPeer revieweden

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