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Complex Tasks Force Hand Laterality and Technological Behaviour in Naturalistically Housed Chimpanzees: Inferences in Hominin Evolution

Authors :
Autoecologia Humana del Quaternari
Història i Història de l'Art
Universitat Rovira i Virgili
M. Mosquera, N. Geribàs, A. Bargalló, M. Llorente, D. Riba; Geribàs, Núria; Bargalló, Amèlia; Llorente, Miquel; Riba, David
Autoecologia Humana del Quaternari
Història i Història de l'Art
Universitat Rovira i Virgili
M. Mosquera, N. Geribàs, A. Bargalló, M. Llorente, D. Riba; Geribàs, Núria; Bargalló, Amèlia; Llorente, Miquel; Riba, David
Source :
Scientific World Journal; 10.1100/2012/514809
Publication Year :
2012

Abstract

Clear hand laterality patterns in humans are widely accepted. However, humans only elicit a significant hand laterality pattern when performing complementary role differentiation (CRD) tasks. Meanwhile, hand laterality in chimpanzees is weaker and controversial. Here we have reevaluated our results on hand laterality in chimpanzees housed in naturalistic environments at Fundació Mona (Spain) and Chimfunshi Wild Orphanage (Zambia). Our results show that the difference between hand laterality in humans and chimpanzees is not as great as once thought. Furthermore, we found a link between hand laterality and task complexity and also an even more interesting connection: CRD tasks elicited not only the hand laterality but also the use of tools. This paper aims to turn attention to the importance of this threefold connection in human evolution: the link between CRD tasks, hand laterality, and tool use, which has important evolutionary implications that may explain the development of complex behaviour in early hominins.

Details

Database :
OAIster
Journal :
Scientific World Journal; 10.1100/2012/514809
Notes :
Anglès, 825 kb
Publication Type :
Electronic Resource
Accession number :
edsoai.on1443572217
Document Type :
Electronic Resource