Journal
JOURNAL OF COMPARATIVE PSYCHOLOGY
Volume 119, Issue 4, Pages 363-370Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0735-7036.119.4.363
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Funding
- NCRR NIH HHS [P51 RR000165, RR-00165, P51 RR000165-485848, U42 RR015090, U42-RR-15090, U42 RR015090-08] Funding Source: Medline
- NICHD NIH HHS [P01 HD038051-100005, P01 HD038051, HD-38051] Funding Source: Medline
- NINDS NIH HHS [R01 NS042867-07, NS-36605, R01 NS036605, NS-42867, R01 NS036605-08, R01 NS042867] Funding Source: Medline
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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.
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