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Pubmed for Handhelds

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  • Title: Assessment of hand preference in two language-trained chimpanzees (Pan troglodytes): a multimethod analysis.
    Author: Morris RD, Hopkins WD, Bolser-Gilmore L.
    Journal: J Clin Exp Neuropsychol; 1993 Jul; 15(4):487-502. PubMed ID: 8354703.
    Abstract:
    The nonhuman primate literature concludes that monkeys and apes do not exhibit handedness preferences at the population level. This discrepancy between human and nonhuman primate findings may be due to differences in the methods of assessment of handedness, lack of reliability between various measures of handedness, and a paucity of studies involving great apes. This paper presents the results of extensive hand preference studies with two language-trained chimpanzees (Pan troglodytes). Both naturalistic and experimental paradigms are described. In particular, various methodologic factors involved in handedness assessment, including the use of a hand preference measure previously used with human subjects were examined. Both chimpanzees exhibited a right-hand preference for fine motor tasks requiring manual dexterity.
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