Hand preference in capuchin monkeys varies with age
- 82 Downloads
The purpose of this research was to examine the influence of age on hand preference in capuchin monkeys (Cebus apella). Twenty-two capuchins, aged 6 months to 30 years, were presented with a task that involved reaching for food and a task that involved using sponging tools to absorb juice. Adults exhibited a greater percentage of right-handed actions in each task than did immature subjects. Adults also exhibited a stronger lateral bias than did immature subjects in the sponging task. These results are consistent with hypotheses: a) adult capuchin monkeys are biased toward use of their right hand for reaching; b) adult capuchins exhibit a greater incidence of right-hand preference than do immature capuchins; and c) primates exhibit age-related differences in the strength and direction of hand preference in tasks that involve the use of tools.
Key WordsCapuchin Cebus apella Monkey Hand preference Laterality Tool-use
Unable to display preview. Download preview PDF.
- Boesch, C., 1991. Handedness in wild chimpanzees.Int. J. Primatol., 12: 541–558.Google Scholar
- Connolly, K. &M. Dalgleish, 1989. The emergence of a tool-using skill in infancy.Develop. Psychol., 25: 894–912.Google Scholar
- Hopkins, W. D. &K. A. Bard, 1993. The ontogeny of lateralized behavior in nonhuman primates with special reference to chimpanzees (Pan troglodytes). In:Primate Laterality: Current Behavioral Evidence of Primate Asymmetries,J. P. Ward &W. D. Hopkins (eds.), Springer-Verlag, New York, pp.251–265.Google Scholar
- MacNeilage, P. F., M. G. Studdert-Kennedy, &B. Lindblom, 1987. Primate handedness reconsidered.Behav. Brain Sci., 10: 247–303.Google Scholar