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Hand Preferences for a Haptic Task in Chimpanzees (Pan troglodytes) |
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| Authors: | Lacreuse Agnès Parr Lisa A Smith Hope M Hopkins William D |
| Institution: | (1) Division of Neuroscience, Yerkes Regional Primate Research Center, Emory University, Atlanta, Georgia, 30322;(2) Department of Psychology, Emory University, Atlanta, Georgia, 30329;(3) Living Links Center, Emory University, Atlanta, Georgia, 30322;(4) Department of Psychology, Berry College, Mt. Berry, Georgia, 30149;(5) Division of Neuroscience, Yerkes Regional Primate Research Center, Emory University, Atlanta, Georgia, 30322; |
| Abstract: | We tested the hand preferences of 20 chimpanzees (Pan troglodytes) for a haptic task requiring individuals to search for grapes in an opaque bucket filled with water. We compared these data to the hand preferences displayed by the same chimpanzees during reaching and bimanual feeding tasks. The chimpanzees displayed no significant hand preference for the reaching or bimanual feeding tasks, but exhibited a right-hand preference while performing the haptic task. In contrast, New and Old World monkeys display left-hand preferences for similar tasks. We discuss the relevance of these findings for the evolution of handedness in primates. |
| Keywords: | haptic laterality handedness chimpanzee |
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