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Potì,, P., Bartolommei, P., & Saporiti, M. (2005). Landmark Use by Cebus apella. Int. J. Primatol., 26, 921–948.
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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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Carruthers, P. (2005). Why the question of animal consciousness might not matter very much. Philosophical Psychology, 18, 83–102.
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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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Mendl, M., & Paul, E. S. (2004). Consciousness, emotion and animal welfare: insights from cognitive science. Animal Welfare, 13, 17–25.
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Josep Call, Brian Hare, Malinda Carpenter, & Michael Tomasello. (2004). `Unwilling' versus `unable': chimpanzees' understanding of human intentional action. Developmental Science, 7, 488–498.
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Yacoub Khallad. (2004). Conceptualization in the pigeon: What do we know? International Journal of Psychology, 39, 73–94.
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Passani M. B., & Blandina P. (2004). The Neuronal Histaminergic System in Cognition. Current Medicinal Chemistry – Central Nervous System Agents, 4, 17–26.
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Evans, C. S., & Evans, L. (2007). Representational signalling in birds. Biology Letters, 3(1), 8–11.
Abstract: Some animals give specific calls when they discover food or detect a particular type of predator. Companions respond with food-searching behaviour or by adopting appropriate escape responses. These signals thus seem to denote objects in the environment, but this specific mechanism has only been demonstrated for monkey alarm calls. We manipulated whether fowl (Gallus gallus) had recently found a small quantity of preferred food and then tested for a specific interaction between this event and their subsequent response to playback of food calls. In one treatment, food calls thus potentially provided information about the immediate environment, while in the other the putative message was redundant with individual experience. Food calls evoked substrate searching, but only if the hens had not recently discovered food. An identical manipulation had no effect on responses to an acoustically matched control call. These results show that chicken food calls are representational signals: they stimulate retrieval of information about a class of external events. This is the first such demonstration for any non-primate species. Representational signalling is hence more taxonomically widespread than has previously been thought, suggesting that it may be the product of common social factors, rather than an attribute of a particular phylogenetic lineage.
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Gerber, B., & Hendel, T. (2006). Outcome expectations drive learned behaviour in larval Drosophila. Proc. Roy. Soc. Lond. B Biol. Sci., 273(1604), 2965–2968.
Abstract: Why does Pavlov's dog salivate? In response to the tone, or in expectation of food? While in vertebrates behaviour can be driven by expected outcomes, it is unknown whether this is true for non-vertebrates as well. We find that, in the Drosophila larva, odour memories are expressed behaviourally only if animals can expect a positive outcome from doing so. The expected outcome of tracking down an odour is determined by comparing the value of the current situation with the value of the memory for that odour. Memory is expressed behaviourally only if the expected outcome is positive. This uncovers a hitherto unrecognized evaluative processing step between an activated memory trace and behaviour control, and argues that learned behaviour reflects the pursuit of its expected outcome. Shown in a system with a simple brain, an apparently cognitive process like representing the expected outcome of behaviour seems to be a basic feature of behaviour control.
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