期刊
JOURNAL OF COMPARATIVE PSYCHOLOGY
卷 115, 期 3, 页码 294-299出版社
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0735-7036.115.3.294
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资金
- NCRR NIH HHS [RR-00165, P51 RR000165] Funding Source: Medline
- NICHD NIH HHS [P01 HD038051, P01 HD038051-050005] Funding Source: Medline
- NINDS NIH HHS [R01 NS042867, R01 NS042867-05, R01 NS036605-08, NS-36605, R01 NS036605, NS-29574] Funding Source: Medline
Hand preferences for a coordinated bimanual task were assessed in 109 chimpanzees (Pan troglodytes). Hand preference was evaluated for 4 test sessions using bouts and frequencies of hand use to compare the sensitivity of each level of analysis in evaluating individual variation in handedness. Overall, significant population-level right-handedness was found using several different measures of hand use. Handedness indices based on bouts and frequencies were highly and significantly correlated. Moreover, hand preferences were consistent across tests despite efforts to situationally bias preference during each test. Taken together, these data do not support the view that bouts are a better level of analysis for evaluating hand preference. The results further suggest that hand preferences for coordinated bimanual actions are not influenced by situational factors and may reflect an inherent specialization of the left hemisphere for motor skill.
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