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J Comp Psychol. 2005 Nov;119(4):363-70.

Factors influencing the prevalence and handedness for throwing in captive chimpanzees (Pan troglodytes).

Author information

1
Yerkes National Primate Research Center, Emory University, Atlanta, GA 30322, USA. lrcbh@rmy.emory.edu

Abstract

Humans throw right-handed, and it has been suggested that the neurophysiological demands of aimed throwing may have served as a precursor to the evolution of left hemisphere specialization for linguistic functions. Although there are descriptions of throwing by wild and captive chimpanzees (Pan troglodytes), systematic observations of aimed throwing and handedness have not been reported. In this article, evidence of population-level right-handedness for throwing is reported in 2 samples of captive chimpanzees. It is further reported that right-handed throwing is more pronounced than other measures of handedness in captive chimpanzees. The implications of these findings are discussed in the context of theories relating throwing to the evolution of lateralization for language functions.

PMID:
16366769
PMCID:
PMC2680150
DOI:
10.1037/0735-7036.119.4.363
[Indexed for MEDLINE]
Free PMC Article
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