Video-task acquisition in rhesus monkeys (Macaca mulatta) and chimpanzees (Pan troglodytes): A comparative analysis |
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Authors: | William D. Hopkins David A. Washburn Charles W. Hyatt |
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Affiliation: | (1) Division of Behavioral Biology, Yerkes Regional Primate Research Center, Emory University, 30322 Atlanta, Georgia, U. S. A.;(2) Department of Psychology, School of Education and Human Sciences, Berry College, 30149 Mount Berry, Georgia, U. S. A.;(3) Language Research Center, Georgia State University, 30303 Atlanta, Georgia, U. S. A.;(4) Emory University & Union Institute, USA;(5) Division of Behavioral Biology, Yerkes Regional Primate Research Center, Emory University, 30322 Atlanta, Georgia, U. S. A. |
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Abstract: | This study describes video-task acquisition in two nonhuman primate species. The subjects were seven rhesus monkeys (Macaca mulatta) and seven chimpanzees (Pan troglodytes). All subjects were trained to manipulate a joystick which controlled a cursor displayed on a computer monitor. Two criterion levels were used: one based on conceptual knowledge of the task and one based on motor performance. Chimpanzees and rhesus monkeys attained criterion in a comparable number of trials using a conceptually based criterion. However, using a criterion based on motor performance, chimpanzees reached criterion significantly faster than rhesus monkeys. Analysis of error patterns and latency indicated that the rhesus monkeys had a larger asymmetry in response bias and were significantly slower in responding than the chimpanzees. The results are discussed in terms of the relation between object manipulation skills and video-task acquisition. |
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Keywords: | Chimpanzee Rhesus Joystick Video Learning |
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