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Ronald J. Schusterman, Colleen J. Reichmuth, & David Kastak. (2000). How Animals Classify Friends and Foes. Curr. Dir. Psychol. Sci., 9, 1–6.
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J. David Smith, & David A. Washburn. (2005). Uncertainty Monitoring and Metacognition by Animals. Curr. Dir. Psychol. Sci., 14, 19–24.
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Pepperberg, I. M. (2002). Cognitive and Communicative Abilities of Grey Parrots. Curr. Dir. Psychol. Sci., 11(3), 83–87.
Abstract: Grey parrots (Psittacus erithacus) solve various cognitive tasks and acquire and use English speech in ways that often resemble those of very young children. Given that the psittacine brain is organized very differently from that of mammals, these results have intriguing implications for the study and evolution of vocal learning, communication, and cognition.
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Gosling, S. D., & John, O. P. (1999). Personality Dimensions in Nonhuman Animals: A Cross-Species Review. Curr. Dir. Psychol. Sci., 8(3), 69–75.
Abstract: The evolutionary continuity between humans and other animals suggests that some dimensions of personality may be common across a wide range of species. Unfortunately, there is no unified body of research on animal personality; studies are dispersed across multiple disciplines and diverse journals. To review 19 studies of personality factors in 12 nonhuman species, we used the human Five-Factor Model plus Dominance and Activity as a preliminary framework. Extraversion, Neuroticism, and Agreeableness showed the strongest cross-speciesgenerality, followed by Openness; a separate Conscientiousness dimension appeared only in chimpanzees, humans` closest relatives. Cross-species evidence was modest for a separate Dominance dimension but scant for Activity. The comparative approach taken here offers a fresh perspective on human personality and should facilitate hypothesis-driven research on the social and biological bases of personality.
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