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Povinelli DJ, Gallup GG, Eddy TJ, Bierschwale DT, & Engstrom MC. (1997). Chimpanzees recognize themselves in mirrors. Anim. Behav., 53, 1083.
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Povinelli DJ, Nelson KE, & Boysen ST. (1992). Comprehension of role reversal in chimpanzees: evidence of empathy? Anim. Behav., 43, 633.
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Hauser MD, Kralik J, & Botto-Mahan C. (1999). Problem solving and functional design features: experiments on cotton-top tamarins, Saguinus oedipus oedipus. Anim. Behav., 57, 565.
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Hauser MD, Pearson H, & Seelig D. (2002). Ontogeny of tool use in cottontop tamarins, Saguinus oedipus: innate recognition of functionally relevant features. Anim. Behav., 64, 299.
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Hauser MD, Santos LR, Spaepen GM, & Pearson HE. (2002). Problem solving, inhibition and domain-specific experience: experiments on cotton-top tamarins, Saguinus oedipus. Anim. Behav., 64, 387.
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Desire L., Boissy A., & Veissier I. (2002). Emotions in farm animals: – a new approach to animal welfare in applied ethology. Behav. Process., 60, 165–180.
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Appleby M. (2002). Consciousness, Cognition and Animal Welfare – J.K. Kirkwood, R.C. Hubrecht, S. Wickens, H. O'Leary, S. Oakley (Eds.), Universities Federation for Animal Welfare, 2001, 251 pp., Paperback, Supplement to Volume 10 of Animal Welfare, 15/US$ 30, ISSN 0962-7286. Appl. Anim. Behav. Sci., 77, 239–241.
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Tavares M.C.H., & Tomaz C. (2002). Working memory in capuchin monkeys (Cebus apella). Behav. Brain. Res., 131, 131–137.
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Boinski, S. (2005). Dispersal patterns among three species of squirrel monkeys (Saimiri oerstedii, S. boliviensis and S. sciureus): III. Cognition. Behaviour, 142, 679–699.
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Snycerski, S., Laraway, S., & Poling, A. (2005). Response acquisition with immediate and delayed conditioned reinforcement. Behav. Process., 68(1), 1–11.
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