Animal Cognition

, Volume 16, Issue 2, pp 187–196

Communicative intentions in wild chimpanzees: persistence and elaboration in gestural signalling

  • Anna Ilona Roberts
  • Sarah-Jane Vick
  • Hannah M. Buchanan-Smith
Original Paper

DOI: 10.1007/s10071-012-0563-1

Cite this article as:
Roberts, A.I., Vick, SJ. & Buchanan-Smith, H.M. Anim Cogn (2013) 16: 187. doi:10.1007/s10071-012-0563-1

Abstract

We examine evidence for communicative intent during conspecific interactions in wild chimpanzees (Budongo Forest, Uganda), focusing on persistence in gestural communication. Previous research indicates that great apes have large gestural repertoires and produce gestural communication in a flexible and intentional manner, including the production of gesture sequences. Although there is a lack of consensus on the form and function of sequences, there is some evidence that sequences are produced when signallers fail to receive any response from a recipient. Here, we provide first systematic evidence for communicative persistence in wild chimpanzees. Rather than examining only the presence or absence of a response, we used the most commonly observed response to assign meanings to gestures and examined sequence production in relation to response congruency. Chimpanzees ceased communication if successful, but persevered when unsuccessful. Chimpanzees repeated gestures when a response partially matched their goal but substituted the original gesture when a response was incongruent. Persistence was also mediated by recipient intent to respond, with more sequences produced within competitive than affiliative contexts. Gestures within sequences were homogenous in semantic meaning and signallers continued until the response matched the assigned meaning of the initial gesture. Gestural sequence production was not primarily affective; gesture intensity (in terms of modality) did not increase within sequences. Chimpanzee gestural sequences emerged to achieve specific outcomes; given variability in recipient behaviour following initial gestures, signallers were flexible in their persistence towards these goals.

Keywords

Great apeChimpanzeeCommunicationGestureIntentionalityCommunicative persistence

Supplementary material

10071_2012_563_MOESM1_ESM.doc (38 kb)
ESM Table 1 Description of morphological features of gestures and sample size for each gesture type. * indicates those gestures only included in analyses when they occurred within a sequence initiated by a visual manual gesture (see Roberts et al. 2012a for fuller descriptions of manual gestures) (DOC 37 kb)
10071_2012_563_MOESM2_ESM.doc (32 kb)
ESM Table 2 Description of broad and narrow categories of context (DOC 31.5 kb)

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Anna Ilona Roberts
    • 1
    • 2
    • 3
  • Sarah-Jane Vick
    • 1
  • Hannah M. Buchanan-Smith
    • 1
  1. 1.Psychology, School of Natural SciencesUniversity of StirlingStirlingScotland, UK
  2. 2.Institute of Cognitive and Evolutionary AnthropologyUniversity of OxfordOxfordUK
  3. 3.Budongo Conservation Field StationMasindiUganda