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	Author	Buttelmann, D.; Call, J.; Tomasello, M.
	Title	Behavioral cues that great apes use to forage for hidden food			Type	Journal Article
	Year	2007	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume		Issue		Pages
	Keywords
	Abstract	We conducted three studies to examine whether the four great ape species (chimpanzees, bonobos, gorillas, and orangutans) are able to use behavioral experimenter-given cues in an object-choice task. In the subsequent experimental conditions subjects were presented with two eggs, one of which contained food and the other did not. In Study 1 the experimenter examined both eggs by smelling or shaking them, but only made a failed attempt to open (via biting) the egg containing food. In a control condition, the experimenter examined and attempted to open both eggs, but in reverse order to control for stimulus enhancement. The apes significantly preferred the egg that was first examined and then bitten, but had no preference in a baseline condition in which there were no cues. In Study 2, we investigated whether the apes could extend this ability to cues not observed in apes so far (i.e., attempting to pull apart the egg), as well as whether they made this discrimination based on the function of the action the experimenter performed. Subjects significantly preferred eggs presented with this novel cue, but did not prefer eggs presented with a novel but functionally irrelevant action. In Study 3, apes did not interpret human actions as cues to food-location when they already knew that the eggs were empty. Thus, great apes were able to use a variety of experimenter-given cues associated with foraging actions to locate hidden food and thereby were partially sensitive to the general purpose underlying these actions.
	Address	Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany, buttelmann@eva.mpg.de
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1435-9448	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:17534674			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2396
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	Author	Kaminski, J.; Call, J.; Tomasello, M.
	Title	Goats' behaviour in a competitive food paradigm: Evidence for perspective taking?			Type	Journal Article
	Year	2006	Publication	Behaviour	Abbreviated Journal	Behaviour
	Volume	143	Issue		Pages	1341-1356
	Keywords	SOCIAL COGNITION; GOATS; VISUAL PERSPECTIVE TAKING; COMPARATIVE COGNITION
	Abstract	Many mammalian species are highly social, creating intra-group competition for such things as food and mates. Recent research with nonhuman primates indicates that in competitive situations individuals know what other individuals can and cannot see, and they use this knowledge to their advantage in various ways. In the current study, we extended these findings to a non-primate species, the domestic goat, using the conspecific competition paradigm developed by Hare et al. (2000). Like chimpanzees and some other nonhuman primates, goats live in fission-fusion societies, form coalitions and alliances, and are known to reconcile after fights. In the current study, a dominant and a subordinate individual competed for food, but in some cases the subordinate could see things that the dominant could not. In the condition where dominants could only see one piece of food but subordinates could see both, subordinates' preferences depended on whether they received aggression from the dominant animal during the experiment. Subjects who received aggression preferred the hidden over the visible piece of food, whereas subjects who never received aggression significantly preferred the visible piece. By using this strategy, goats who had not received aggression got significantly more food than the other goats. Such complex social interactions may be supported by cognitive mechanisms similar to those of chimpanzees. We discuss these results in the context of current issues in mammalian cognition and socio-ecology.
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	3430
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	Author	Tomasello, M.; Call, J.
	Title	Do chimpanzees know what others see ? or only what they are looking at?			Type	Book Chapter
	Year	2006	Publication	Rational Animals?	Abbreviated Journal
	Volume		Issue		Pages	371-384
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	Publisher	Oxford University Press	Place of Publication	Oxford	Editor	Nudds, M.; Hurley, S.
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	Series Volume		Series Issue		Edition
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4094
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	Author	Tomasello, M.; Call,J
	Title	Primate Cognition			Type	Book Whole
	Year	1997	Publication	Oxford University Press	Abbreviated Journal	Oxf. Univ. Pr.
	Volume		Issue		Pages
	Keywords
	Abstract	Description Ever since Charles Darwin first formulated his theories on evolution, much research has been conducted in primate cognition. In this book, Michael Tomasello and Josep Call review what is already known about the cognitive skills of nonhuman primates, and assess the current state of our knowledge. They integrate empirical findings on the topic from the beginning of the century to the present, placing this work in theoretical perspective. The first part examines the way primates adapt to their physical world, mostly for the purpose of foraging. The second part lokos at primate social knowledhe and focuses on the adaptations of primates to their social world for purposes of competation and cooperation. In the third section, the authors construct a general theory of primate cognition, distinguishing the cognition in primates from that of other mammals (human in particular). Their broad-ranging theory should provide a guide for future research. Primate Cognition is an enlightening exploration of the cognitive capacities of our nearest primate relatives. It is a useful resource for a eide range of researchers and students in psychology, behavioral biology, primatology, and anthropology.
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	Publisher	Oxford University Press	Place of Publication	Oxford	Editor
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	Series Volume		Series Issue		Edition
	ISSN		ISBN	9780195106244	Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4424
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	Author	Tomasello, M.
	Title	Cultural transmission in the tool use and communicatory signalling of chimpanzees?			Type	Book Chapter
	Year	1990	Publication	Language and Intelligence in Monkeys and Apes.	Abbreviated Journal
	Volume		Issue		Pages	274-311
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	Publisher	Cambridge University Press	Place of Publication	Cambridge	Editor	Parker,S.T.;Gibson,K.R.
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5267
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	Author	Tomasello, M.
	Title	The cultural origins of human cognition.			Type	Book Whole
	Year	1999	Publication		Abbreviated Journal
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	Publisher	Harvard University Press	Place of Publication	Camebridge,MA.	Editor
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5597
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	Author	Tomasello, M.
	Title	Do apes ape?			Type	Book Chapter
	Year	1996	Publication	Social learning in animals: the roots of culture	Abbreviated Journal
	Volume		Issue		Pages	319-346
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	Publisher	Academic Press	Place of Publication	London	Editor	Heyes, C. M.; Galef, B.G.
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5600
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	Author	Schneider, A.-C.; Melis, A.P.; Tomasello, M.
	Title	How chimpanzees solve collective action problems			Type	Journal Article
	Year	2012	Publication	Proceedings of the Royal Society B: Biological Sciences	Abbreviated Journal
	Volume		Issue		Pages
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	Abstract	We presented small groups of chimpanzees with two collective action situations, in which action was necessary for reward but there was a disincentive for individuals to act owing to the possibility of free-riding on the efforts of others. We found that in simpler scenarios (experiment 1) in which group size was small, there was a positive relationship between rank and action with more dominant individuals volunteering to act more often, particularly when the reward was less dispersed. Social tolerance also seemed to mediate action whereby higher tolerance levels within a group resulted in individuals of lower ranks sometimes acting and appropriating more of the reward. In more complex scenarios, when group size was larger and cooperation was necessary (experiment 2), overcoming the problem was more challenging. There was highly significant variability in the action rates of different individuals as well as between dyads, suggesting success was more greatly influenced by the individual personalities and personal relationships present in the group.
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5629
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	Author	Hare, B.; Rosati, A.; Kaminski, J.; Bräuer, J.; Call, J.; Tomasello, M.
	Title	The domestication hypothesis for dogs' skills with human communication: a response to Udell et al. (2008) and Wynne et al. (2008)			Type	Journal Article
	Year	2010	Publication	Anim Behav	Abbreviated Journal
	Volume	79	Issue		Pages
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @ Hare2010			Serial	6241
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	Author	Tennie, C.; Call, J.; Tomasello, M.
	Title	Untrained chimpanzees (Pan troglodytes schweinfurthii) fail to imitate novel actions			Type	Journal Article
	Year	2012	Publication	PLoS One	Abbreviated Journal
	Volume	7	Issue		Pages
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	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @ Tennie2012			Serial	6289
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