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Title: The higher the farther : distance-specific referential gestures in chimpanzees (Pan troglodytes)
Authors: Gonseth, Chloe
Kawakami, Fumito
Ichino, Etsuko
Tomonaga, Masaki  kyouindb  KAKEN_id
Author's alias: ゴンセット, クロエ・マリー
川上, 文人
市野, 悦子
友永, 雅己
Keywords: chimpanzees
referential communication
distance-specific oral and manual gestures
Issue Date: Nov-2017
Publisher: The Royal Society
Journal title: Biology Letters
Volume: 13
Issue: 11
Thesis number: 20170398
Abstract: Referential signals, such as manual pointing or deictic words, allow individuals to efficiently locate a specific entity in the environment, using distance-specific linguistic and/or gestural units. To explore the evolutionary prerequisites of such deictic ability, the present study investigates the ability of chimpanzees to adjust their communicative signals to the distance of a referent. A food-request paradigm in which the chimpanzees had to request a close or distant piece of food on a table in the presence/absence of an experimenter was employed. Our main finding concerns the chimpanzees adjusting their requesting behaviours to the distance of the food such that higher manual gestures and larger mouth openings were used to request the distant piece of food. To the best of our knowledge, this is the first study to demonstrate that chimpanzees are able to use distance-specific gestures.
Description: チンパンジーのボディランゲージ、距離に応じて使い分け. 京都大学プレスリリース. 2017-11-17.
Rights: © 2017 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License, which permits unrestricted use, provided the original author and source are credited.
DOI(Published Version): 10.1098/rsbl.2017.0398
PubMed ID: 29142043
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