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Hand preference during unimanual and bimanual reaching actions in Sichuan snub‐nosed monkeys ( Rhinopithecus roxellana )
Author(s) -
Zhao DaPeng,
Ji WeiHong,
Watanabe Kunio,
Li BaoGuo
Publication year - 2008
Publication title -
american journal of primatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.988
H-Index - 81
eISSN - 1098-2345
pISSN - 0275-2565
DOI - 10.1002/ajp.20509
Subject(s) - preference , hand preference , action (physics) , psychology , affect (linguistics) , developmental psychology , communication , laterality , mathematics , physics , statistics , quantum mechanics
Hand preferences were investigated during one unimanual action (food‐reaching) and one bimanual action (mount‐reaching) in a semi‐free‐ranging group of Sichuan snub‐nosed monkeys ( Rhinopithecus roxellana ) in Zhouzhi National Nature Reserve, Qinling Mountains of China. Nine of 14 individuals tested on the unimanual food‐reaching action and all six individuals tested on the bimanual mount‐reaching action exhibited a manual preference. Both significant right‐ and left‐handed preferences were observed in the two actions. Sex did not affect either direction or strength of hand preference in the unimanual action. Hand preference for the bimanual action was stable over time, and the strength of hand preference was significantly stronger in the bimanual action than in the unimanual action. Am. J. Primatol. 70:500–504, 2008. © 2007 Wiley‐Liss, Inc.