Manual Laterality in Anvil Use: Wild Chimpanzees Cracking Strychnos Fruits

W. C. McGrew; L. F. Marchant; R. W. Wrangham; H. Klein

doi:10.1080/03069887600760101

Manual Laterality in Anvil Use: Wild Chimpanzees Cracking Strychnos Fruits

W. C. McGrew^*, L. F. Marchant, R. W. Wrangham, H. Klein

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Wild chimpanzees (Pan troglodytes schweinfurthii) at Gombe National Park, Tanzania, smash open the hard-shelled fruits of Strychnos spp. on anvils of stone or woody vegetation. In this food-processing task, most of the apes show exclusive use of one hand or the other, that is, strong individual hand preferences. Such extreme laterally of manual functioning corresponds to Level 3 on a five-level descriptive model of lateralisation that appears to reflect the increasingly skilful demands of object manipulation. There is precise congruence in laterality between anvil use and another subsistence task involving elementary technology - termite fishing - in almost all cases.

Original language	English
Pages (from-to)	79-87
Number of pages	9
Journal	Laterality
Volume	4
Issue number	1
DOIs	https://doi.org/10.1080/03069887600760101
Publication status	Published - 10 Dec 2000

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title = "Manual Laterality in Anvil Use: Wild Chimpanzees Cracking Strychnos Fruits",

abstract = "Wild chimpanzees (Pan troglodytes schweinfurthii) at Gombe National Park, Tanzania, smash open the hard-shelled fruits of Strychnos spp. on anvils of stone or woody vegetation. In this food-processing task, most of the apes show exclusive use of one hand or the other, that is, strong individual hand preferences. Such extreme laterally of manual functioning corresponds to Level 3 on a five-level descriptive model of lateralisation that appears to reflect the increasingly skilful demands of object manipulation. There is precise congruence in laterality between anvil use and another subsistence task involving elementary technology - termite fishing - in almost all cases.",

author = "McGrew, {W. C.} and Marchant, {L. F.} and Wrangham, {R. W.} and H. Klein",

note = "Funding Information: We thank the Tanzania Commission for Science and Technology, Serengeti Wildlife Research Institute, and Tanzania National Parks for permission to do the research; Jane Goodall for use of the Gombe Stream Research Centre; W.T. Grant Foundations and L.S.B. Leakey Foundation for financial support; Richard Byrne for critical reading of the manuscript; and Carol Kist for word processing. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",

year = "2000",

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doi = "10.1080/03069887600760101",

language = "English",

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AU - Marchant, L. F.

AU - Wrangham, R. W.

AU - Klein, H.

N1 - Funding Information: We thank the Tanzania Commission for Science and Technology, Serengeti Wildlife Research Institute, and Tanzania National Parks for permission to do the research; Jane Goodall for use of the Gombe Stream Research Centre; W.T. Grant Foundations and L.S.B. Leakey Foundation for financial support; Richard Byrne for critical reading of the manuscript; and Carol Kist for word processing. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 2000/12/10

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N2 - Wild chimpanzees (Pan troglodytes schweinfurthii) at Gombe National Park, Tanzania, smash open the hard-shelled fruits of Strychnos spp. on anvils of stone or woody vegetation. In this food-processing task, most of the apes show exclusive use of one hand or the other, that is, strong individual hand preferences. Such extreme laterally of manual functioning corresponds to Level 3 on a five-level descriptive model of lateralisation that appears to reflect the increasingly skilful demands of object manipulation. There is precise congruence in laterality between anvil use and another subsistence task involving elementary technology - termite fishing - in almost all cases.

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Manual Laterality in Anvil Use: Wild Chimpanzees Cracking Strychnos Fruits

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