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Author Pepperberg, I.M. doi  openurl
  Title (up) “Insightful” string-pulling in Grey parrots (Psittacus erithacus) is affected by vocal competence Type Journal Article
  Year 2004 Publication Animal Cognition Abbreviated Journal Anim. Cogn.  
  Volume 7 Issue 4 Pages 263-266  
  Keywords Animals; *Association Learning; *Discrimination Learning; Humans; Male; *Parrots; *Problem Solving; Verbal Behavior; Verbal Learning; *Vocalization, Animal  
  Abstract Four Grey parrots (Psittacus erithacus) were tested on their ability to obtain an item suspended from a string such that mutiple, repeated, coordinated beak-foot actions were required for success (e.g., Heinrich 1995). Those birds with little training in referential English requests (e.g. “I want X”) succeeded, whereas birds who could request the suspended item failed to obtain the object but engaged in repeated requesting.  
  Address MIT School of Architecture and Planning, Bldg 7-231, 77 Massachusetts Ave, MA 02139, Cambridge, USA. impepper@media.mit.edu  
  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:15045620 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2537  
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Author Edwards, D.H.; Spitzer, N. doi  openurl
  Title (up) 6. Social dominance and serotonin receptor genes in crayfish Type Journal Article
  Year 2006 Publication Current Topics in Developmental Biology Abbreviated Journal Curr Top Dev Biol  
  Volume 74 Issue Pages 177-199  
  Keywords Animals; Astacoidea/*genetics/physiology; Humans; Receptors, Serotonin/*genetics; Serotonin/physiology; *Social Dominance  
  Abstract Gene expression affects social behavior only through changes in the excitabilities of neural circuits that govern the release of the relevant motor programs. In turn, social behavior affects gene expression only through patterns of sensory stimulation that produce significant activation of relevant portions of the nervous system. In crayfish, social interactions between pairs of animals lead to changes in behavior that mark the formation of a dominance hierarchy. Those changes in behavior result from changes in the excitability of specific neural circuits. In the new subordinate, circuits for offensive behavior become less excitable and those for defensive behavior become more excitable. Serotonin, which is implicated in mechanisms for social dominance in many animals, modulates circuits for escape and avoidance responses in crayfish. The modulatory effects of serotonin on the escape circuits have been found to change with social dominance, becoming excitatory in dominant crayfish and inhibitory in subordinates. These changes in serotonin's effects on escape affect the synaptic response to sensory input of a single cell, the lateral giant (LG) command neuron for escape. Moreover, these changes occur over a 2-week period and for the subordinate are reversible at any time following a reversal of the animal's status. The results have suggested that a persistent change in social status leads to a gradual change in the expression of serotonin receptors to a pattern that is more appropriate for the new status. To test that hypothesis, the expression patterns of crayfish serotonin receptors must be compared in dominant and subordinate animals. Two of potentially five serotonin receptors in crayfish have been cloned, sequenced, and pharmacologically characterized. Measurements of receptor expression in the whole CNS of dominant and subordinate crayfish have produced inconclusive results, probably because each receptor is widespread in the nervous system and is likely to experience opposite expression changes in different areas of the CNS. Both receptors have recently been found in identified neurons that mediate escape responses, and so the next step will be to measure their expression in these identified cells in dominant and subordinate animals.  
  Address Department of Biology, Georgia State University, Atlanta, GA 30302, USA  
  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 0070-2153 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:16860668 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4364  
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Author de Waal, F.B.M. doi  openurl
  Title (up) A century of getting to know the chimpanzee Type Journal Article
  Year 2005 Publication Nature Abbreviated Journal Nature  
  Volume 437 Issue 7055 Pages 56-59  
  Keywords Aggression; Animals; Behavior, Animal/*physiology; Competitive Behavior; Cooperative Behavior; Female; Humans; Male; Pan troglodytes/genetics/*physiology/psychology; Sexual Behavior, Animal; *Social Behavior  
  Abstract A century of research on chimpanzees, both in their natural habitat and in captivity, has brought these apes socially, emotionally and mentally much closer to us. Parallels and homologues between chimpanzee and human behaviour range from tool-technology and cultural learning to power politics and intercommunity warfare. Few behavioural domains have remained untouched by this increased knowledge, which has dramatically challenged the way we view ourselves. The sequencing of the chimpanzee genome will no doubt bring more surprises and insights. Humans do occupy a special place among the primates, but this place increasingly has to be defined against a backdrop of substantial similarity.  
  Address Living Links, Yerkes National Primate Research Center, Emory University, 954 North Gatewood Road, Atlanta, Georgia 30322, USA. dewaal@emory.edu  
  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 1476-4687 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:16136128 Approved no  
  Call Number refbase @ user @ Serial 162  
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Author Miklósi, Á.; Soproni, K. doi  openurl
  Title (up) A comparative analysis of animals' understanding of the human pointing gesture Type Journal Article
  Year 2006 Publication Animal cognition Abbreviated Journal Anim. Cogn.  
  Volume 9 Issue 2 Pages 81-93  
  Keywords *Animal Communication; Animals; *Behavior, Animal; Child; Child, Preschool; Dogs; Fixation, Ocular; *Gestures; Hand; Humans; *Nonverbal Communication; Pinnipedia; Primates; Problem Solving; *Recognition (Psychology); Species Specificity  
  Abstract We review studies demonstrating the ability of some animals to understand the human pointing gesture. We present a 3-step analysis of the topic. (1) We compare and evaluate current experimental methods (2) We compare available experimental results on performance of different species and investigate the interaction of species differences and other independent variables (3) We evaluate how our present understanding of pointing comprehension answers questions about function, evolution and mechanisms. Recently, a number of different hypotheses have been put forward to account for the presence of this ability in some species and for the lack of such comprehension in others. In our view, there is no convincing evidence for the assumption that the competitive lifestyles of apes would inhibit the utilization of this human gesture. Similarly, domestication as a special evolutionary factor in the case of some species falls short in explaining high levels of pointing comprehension in some non-domestic species. We also disagree with the simplistic view of describing the phenomenon as a simple form of conditioning. We suggest that a more systematic comparative research is needed to understand the emerging communicative representational abilities in animals that provide the background for comprehending the human pointing gesture.  
  Address Department of Ethology, Eotvos Lorand University, Budapest, Pazmany P 1/c, H-1117, Budapest, Hungary. miklosa@ludens.elte.hu  
  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:16235075 Approved no  
  Call Number refbase @ user @ Serial 463  
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Author Gutierrez Rincon, J.A.; Vives Turco, J.; Muro Martinez, I.; Casas Vaque, I. openurl 
  Title (up) A comparative study of the metabolic effort expended by horse riders during a jumping competition Type Journal Article
  Year 1992 Publication British Journal of Sports Medicine Abbreviated Journal Br J Sports Med  
  Volume 26 Issue 1 Pages 33-35  
  Keywords Adult; Animals; Energy Metabolism/*physiology; *Exertion; Heart Rate/physiology; Horses; Humans; Lactates/blood; *Sports  
  Abstract The three main Olympic horse riding disciplines are dressage, jumping, and three-day eventing (including dressage, cross country and jumping). In the jumping discipline (obstacle race), the 'team' (horse rider) is judged under the different conditions that might take place in a varied run. The horse is expected to show power and ability; the rider must show riding skill and good physical condition. However, the different conditions encountered by the rider during competition (duration of event, continuous isometric working level, especially in the inferior trunk, lead us to consider the need for a rider to develop different metabolic pathways to meet the high energy requirements of the competition.  
  Address Centre de Medicina de l'Esport de Barcelona, Spain  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0306-3674 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:1600451 Approved no  
  Call Number Equine Behaviour @ team @ Serial 3754  
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Author Bering, J.M. doi  openurl
  Title (up) A critical review of the “enculturation hypothesis”: the effects of human rearing on great ape social cognition Type Journal Article
  Year 2004 Publication Animal Cognition Abbreviated Journal Anim. Cogn.  
  Volume 7 Issue 4 Pages 201-212  
  Keywords Animals; *Cognition; *Culture; Hominidae/*psychology; Humans; *Imitative Behavior; Imprinting (Psychology); *Intention; Macaca; Psychological Theory; Social Behavior; *Social Environment; Species Specificity  
  Abstract Numerous investigators have argued that early ontogenetic immersion in sociocultural environments facilitates cognitive developmental change in human-reared great apes more characteristic of Homo sapiens than of their own species. Such revamping of core, species-typical psychological systems might be manifest, according to this argument, in the emergence of mental representational competencies, a set of social cognitive skills theoretically consigned to humans alone. Human-reared great apes' capacity to engage in “true imitation,” in which both the means and ends of demonstrated actions are reproduced with fairly high rates of fidelity, and laboratory great apes' failure to do so, has frequently been interpreted as reflecting an emergent understanding of intentionality in the former. Although this epigenetic model of the effects of enculturation on social cognitive systems may be well-founded and theoretically justified in the biological literature, alternative models stressing behavioral as opposed to representational change have been largely overlooked. Here I review some of the controversy surrounding enculturation in great apes, and present an alternative nonmentalistic version of the enculturation hypothesis that can also account for enhanced imitative performance on object-oriented problem-solving tasks in human-reared animals.  
  Address Department of Psychology, University of Arkansas, Fayetteville, AR 72701, USA. jbering@uark.edu  
  Corporate Author Thesis  
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  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:15004739 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2543  
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Author Parker, S.T. doi  openurl
  Title (up) A general model for the adaptive function of self-knowledge in animals and humans Type Journal Article
  Year 1997 Publication Consciousness and Cognition Abbreviated Journal Conscious Cogn  
  Volume 6 Issue 1 Pages 75-86  
  Keywords *Adaptation, Psychological; Animals; *Awareness; Concept Formation; Evolution; Humans; Phylogeny; *Self Concept; Species Specificity  
  Abstract This article offers a general definition of self-knowledge that embraces all forms and levels of self-knowledge in animals and humans. It is hypothesized that various levels of self-knowledge constitute an ordinal scale such that each species in a lineage displays the forms of self-knowledge found in related species as well as new forms it and its sister species may have evolved. Likewise, it is hypothesized that these various forms of levels of self-knowledge develop in the sequence in which they evolved. Finally, a general hypothesis for the functional significance of self-knowledge is proposed along with subhypotheses regarding the adaptive significance of various levels of self-knowledge in mammals including human and nonhuman primates. The general hypothesis is that self-knowledge serves as a standard for assessing the qualities of conspecifics compared to those of the self. Such assessment is crucial to deciding among alternative reproductive and subsistence strategies. The qualities that are assessed, which vary across taxa, range from the size and strength of the self to its mathematical or musical abilities. This so-called assessment model of self-knowledge is based on evolutionary biological models for social selection and the role of assessment in animal communication.  
  Address Anthropology Department, Sonoma State University, Rohnert Park, California, USA. Parker@Sonoma.edu  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1053-8100 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:9170562 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4160  
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Author Ikeda, M.; Patterson, K.; Graham, K.S.; Ralph, M.A.L.; Hodges, J.R. doi  openurl
  Title (up) A horse of a different colour: do patients with semantic dementia recognise different versions of the same object as the same? Type Journal Article
  Year 2006 Publication Neuropsychologia Abbreviated Journal Neuropsychologia  
  Volume 44 Issue 4 Pages 566-575  
  Keywords Adult; Aged; Anomia/diagnosis/psychology; Atrophy; *Attention; Color Perception; Dementia/*diagnosis/psychology; *Discrimination Learning; Dominance, Cerebral; Female; Humans; Male; *Memory, Short-Term; Middle Aged; Neuropsychological Tests; Orientation; *Pattern Recognition, Visual; Reference Values; Retention (Psychology); Semantics; Size Perception; Temporal Lobe/pathology  
  Abstract Ten patients with semantic dementia resulting from bilateral anterior temporal lobe atrophy, and 10 matched controls, were tested on an object recognition task in which they were invited to choose (from a four-item array) the picture representing “the same thing” as an object picture that they had just inspected and attempted to name. The target in the response array was never physically identical to the studied picture but differed from it – in the various conditions – in size, angle of view, colour or exemplar (e.g. a different breed of dog). In one test block for each patient, the response array was presented immediately after the studied picture was removed; in another block, a 2 min filled delay was inserted between study and test. The patients performed relatively well when the studied object and target response differed only in the size of the picture on the page, but were significantly impaired as a group in the other three type-of-change conditions, even with no delay between study and test. The five patients whose structural brain imaging revealed major right-temporal atrophy were more impaired overall, and also more affected by the 2 min delay, than the five patients with an asymmetric pattern characterised by predominant left-sided atrophy. These results are interpreted in terms of a hypothesis that successful classification of an object token as an object type is not a pre-semantic ability but rather results from interaction of perceptual and conceptual processing.  
  Address Department of Neuropsychiatry, Ehime University School of Medicine, Shitsukawa, Toon City, Ehime 791-0295, Japan. mikeda@m.ehime-u.ac.jp  
  Corporate Author Thesis  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0028-3932 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:16115656 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4059  
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Author Dunbar, K.; MacLeod, C.M. openurl 
  Title (up) A horse race of a different color: Stroop interference patterns with transformed words Type Journal Article
  Year 1984 Publication Journal of Experimental Psychology. Human Perception and Performance Abbreviated Journal J Exp Psychol Hum Percept Perform  
  Volume 10 Issue 5 Pages 622-639  
  Keywords *Attention; *Color Perception; Discrimination Learning; Humans; Orientation; Reaction Time; Reading; *Semantics  
  Abstract Four experiments investigated Stroop interference using geometrically transformed words. Over experiments, reading was made increasingly difficult by manipulating orientation uncertainty and the number of noncolor words. As a consequence, time to read color words aloud increased dramatically. Yet, even when reading a color word was considerably slower than naming the color of ink in which the word was printed, Stroop interference persisted virtually unaltered. This result is incompatible with the simple horse race model widely used to explain color-word interference. When reading became extremely slow, a reversed Stroop effect--interference in reading the word due to an incongruent ink color--appeared for one transformation together with the standard Stroop interference. Whether or not the concept of automaticity is invoked, relative speed of processing the word versus the color does not provide an adequate overall explanation of the Stroop phenomenon.  
  Address  
  Corporate Author Thesis  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0096-1523 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:6238123 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4065  
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Author Virányi, Z.; Topál, J.; Miklósi, Á.; Csányi, V. doi  openurl
  Title (up) A nonverbal test of knowledge attribution: a comparative study on dogs and children Type Journal Article
  Year 2006 Publication Animal Cognition Abbreviated Journal Anim. Cogn.  
  Volume 9 Issue 1 Pages 13-26  
  Keywords Animals; *Child Psychology; Child, Preschool; Cues; Dogs/*psychology; Female; Humans; Male; Nonverbal Communication; *Problem Solving; Species Specificity  
  Abstract The sensitivity of eleven pet dogs and eleven 2.5-year-old children to others' past perceptual access was tested for object-specificity in a playful, nonverbal task in which a human Helper's knowledge state regarding the whereabouts of a hidden toy and a stick (a tool necessary for getting the out-of-reach toy) was systematically manipulated. In the four experimental conditions the Helper either participated or was absent during hiding of the toy and the stick and therefore she knew the place(s) of (1) both the toy and the stick, (2) only the toy, (3) only the stick or (4) neither of them. The subjects observed the hiding processes, but they could not reach the objects, so they had to involve the Helper to retrieve the toy. The dogs were more inclined to signal the place of the toy in each condition and indicated the location of the stick only sporadically. However the children signalled both the location of the toy and that of the stick in those situations when the Helper had similar knowledge regarding the whereabouts of them (i.e. knew or ignored both of them), and in those conditions in which the Helper was ignorant of the whereabouts of only one object the children indicated the place of this object more often than that of the known one. At the same time however, both dogs and children signalled the place of the toy more frequently if the Helper had been absent during toy-hiding compared to those conditions when she had participated in the hiding. Although this behaviour appears to correspond with the Helper's knowledge state, even the subtle distinction made by the children can be interpreted without a casual understanding of knowledge-formation in others.  
  Address Department of Ethology, ELTE University Budapest, Pazmany P. setany 1/C H-1117, Hungary. zsofi.viranyi@freemail.hu  
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  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:15895261 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2486  
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