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Citations
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Real, L. A. (1991). Animal choice behavior and the evolution of cognitive architecture. Science, 253(5023), 980–986.
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Galdikas, B. M. (1989). Orangutan tool use. Science, 243(4888), 152.
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Linton, M. L. (1970). Washoe the chimpanzee. Science, 169(943), 328.
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Clayton, N. S. (2004). COGNITION: An Open Sandwich or an Open Question? Science, 305(5682), 344–.
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Pinker, S. (1999). COGNITION:Enhanced: Out of the Minds of Babes. Science, 283(5398), 40–41.
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Gallup GG. (1970). Chimpanzees: self-recognition. Science, 167, 86.
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Premack D, & Woodruff G. (1978). Chimpanzee problem-solving: a test for comprehension. Science, 202(3), 532.
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Zentall TR, & Levine JM. (1972). Observational learning and social facilitation in the rat. Science, 178, 1220.
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Clayton NS, & Dickinson A. (2006). Rational rats. Science, 9, 472.
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Straub, A. (2007). An intelligent crow beats a lab. Science, 316(5825), 688.
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