| Records |
| Author |
Rundgren, M.; Nordin, A. |
Title  |
Personality profile and simple learning tests for horses |
Type |
Journal Article |
| Year |
1997 |
Publication |
Proceedings of the 48th Annual Meeting of the European Association of Animal Production |
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1-4 |
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Vienna |
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Equine Behaviour @ team @ |
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3598 |
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| Author |
Brodbeck, D.R. |
| Title |
Picture fragment completion: priming in the pigeon |
Type |
Journal Article |
| Year |
1997 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
23 |
Issue |
4 |
Pages |
461-468 |
| Keywords |
Animals; *Attention; *Awareness; Columbidae; *Mental Recall; *Pattern Recognition, Visual; *Perceptual Masking; Problem Solving |
| Abstract |
It has been suggested that the system behind implicit memory in humans is evolutionarily old and that animals should readily show priming. In Experiment 1, a picture fragment completion test was used to test priming in pigeons. After pecking a warning stimulus, pigeons were shown 2 partially obscured pictures from different categories and were always reinforced for choosing a picture from one of the categories. On control trials, the warning stimulus was a picture of some object (not from the S+ or S- category), on study trials the warning stimulus was a picture to be categorized on the next trial, and on test trials the warning stimulus was a randomly chosen picture and the S+ picture was the warning stimulus seen on the previous trial. Categorization was better on study and test trials than on control trials. Experiment 2 ruled out the possibility that the priming effect was caused by the pigeons' responding to familiarity by using warning stimuli from both S+ and S- categories. Experiment 3 investigated the time course of the priming effect. |
| Address |
Department of Psychology, University of Western Ontario, London, Ontario, Canada. brodbeck@thunderbird.auc.laurentian.ca |
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English |
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0097-7403 |
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PMID:9411019 |
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no |
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Equine Behaviour @ team @ |
Serial |
2777 |
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| Author |
Castley, J.G.; Knight, M.H. |
| Title |
Population status of plains zebra, Equus burchelli, in South African National Parks. |
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Journal Article |
| Year |
1997 |
Publication |
Scientific Services, National Parks Board |
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Kimberley, South Africa. |
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Equine Behaviour @ team @ |
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2254 |
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| Author |
Tomasello, M.; Call,J |
| Title |
Primate Cognition |
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Book Whole |
| Year |
1997 |
Publication |
Oxford University Press |
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Oxf. Univ. Pr. |
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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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Oxford University Press |
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Oxford |
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9780195106244 |
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Equine Behaviour @ team @ |
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4424 |
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| Author |
de Waal, F.B.; Seres, M. |
| Title |
Propagation of handclasp grooming among captive chimpanzees |
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Journal Article |
| Year |
1997 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
| Volume |
43 |
Issue |
4 |
Pages |
339-346 |
| Keywords |
Animals; Family Relations; Female; *Grooming; Learning; Male; Pan troglodytes/*psychology; *Social Behavior |
| Abstract |
A grooming posture previously reported for two wild chimpanzee (Pan troglodytes) communities developed spontaneously in a captive group of the same species. This offered a unique opportunity to follow the propagation of a new social custom. The posture consists of two partners grasping hands--either both right hands or both left hands--and raising the arms in an A-frame above their heads while mutually grooming with their free hands. The propagation of this pattern was followed over a 5 year period. In the beginning, handclasps were always initiated by the same adult female. This female initiated the posture mainly with her adult female kin. In subsequent years, these relatives became frequent participants in the posture with each other as well as with nonrelatives. Over the years the posture increased in frequency and duration and spread to the majority of adults and also to a few adolescents and older juveniles. The pattern persisted after removal of the apparent originator. |
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Yerkes Primate Center, Emory University, Atlanta, GA 30329, USA. dewaal@emory.edu |
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English |
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0275-2565 |
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PMID:9403098 |
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no |
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refbase @ user @ |
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202 |
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| Author |
Bugnyar T; Huber L |
| Title |
Push or pull: an experimental study on imitation in marmosets |
Type |
Journal Article |
| Year |
1997 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
54 |
Issue |
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Pages |
817 |
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Equine Behaviour @ team @ |
Serial |
2984 |
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| Author |
Church, R.M. |
| Title |
Quantitative models of animal learning and cognition |
Type |
Journal Article |
| Year |
1997 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
23 |
Issue |
4 |
Pages |
379-389 |
| Keywords |
Animals; *Behavior, Animal; *Cognition; Computer Simulation; *Learning; *Models, Psychological; *Models, Theoretical |
| Abstract |
This article reviews the prerequisites for quantitative models of animal learning and cognition, describes the types of models, provides a rationale for the development of such quantitative models, describes criteria for their evaluation, and makes recommendations for the next generation of quantitative models. A modular approach to the development of models is described in which a procedure is considered as a generator of stimuli and a model is considered as a generator of responses. The goal is to develop models that, in combination with many different procedures, produce sequences of times of occurrence of events (stimuli and responses) that are indistinguishable from those produced by the animal under many experimental procedures and data analysis techniques. |
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Department of Psychology, Brown University, Providence, Rhode Island 02912, USA. russell_church@brown.edu |
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English |
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0097-7403 |
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| Notes |
PMID:9335132 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2778 |
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| Author |
Cheney, D.L.; Seyfarth, R.M. |
| Title |
Reconciliatory grunts by dominant female baboons influence victims' behaviour |
Type |
Journal Article |
| Year |
1997 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
54 |
Issue |
2 |
Pages |
409-418 |
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| Abstract |
Following aggressive interactions, dominant female baboons, Papio cynocephalus ursinusoccasionally grunt to their victims. To examine the effect of these apparently reconciliatory grunts on victims' subsequent behaviour, a series of playback experiments was designed to mimic reconciliation. Victims were played their opponents' grunts in the minutes immediately following a fight and then observed for half an hour. After hearing these grunts, victims approached their former opponents and also tolerated their opponents' approaches at significantly higher rates than they did under control conditions. They were also supplanted by their opponents at significantly lower rates. By contrast, playbacks of control females' grunts did not influence victims' behaviour. Playbacks of reconciliatory grunts did not increase the rate at which opponents approached or initiated friendly interactions with their former victims. Playbacks of reconciliatory grunts, therefore, appeared to influence victims', but not opponents', perception of recent events. |
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Departments of Biology and Psychology, University of Pennsylvania |
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English |
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0003-3472 |
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PMID:9268473 |
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no |
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refbase @ user @ |
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347 |
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| Author |
Flannery, B. |
| Title |
Relational discrimination learning in horses |
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Journal Article |
| Year |
1997 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
54 |
Issue |
4 |
Pages |
267-280 |
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Horses; Shaping; Complex discrimination; Concept formation; Generalization ability; Training |
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This series of studies investigated horses' ability to learn the concept of sameness under several different conditions. Before experimentation began, three horses were shaped to touch individually presented stimuli with their muzzles, and then to make two responses to two matching cards from an array of three. A modified version of the identity matching-to-sample (IMTS) procedure was used to present stimuli in a variety of configural arrangements on a barn wall (Experiment 1 and Experiment 2), and on a flat panel mounted to a barn door (Experiment 3). The task in each experiment was to select the two stimulus cards that were the same (either circles or Xs) and to avoid the nonmatching stimulus card (either a star or a square). In Experiment 1, the mean accuracy rate for selecting the matching alternatives was 74%. The horses' accuracy levels reached a mean level of 83% during Experiment 2, in which they received additional trials and an intermittent secondary reinforcement schedule. In Experiment 3, when the stimuli were moved further apart from each other within arrangements and were presented on a novel background, the mean accuracy rate was 73%. These data demonstrate that horses can learn complex discrimination problems involving the concept of sameness, and that they are able to generalize this learning to a novel stimulus presentation situation. These results also suggest that a relational discrimination test may be useful for assessing horses' learning ability and the level of training appropriate for individual horses. |
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Equine Behaviour @ team @ |
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3557 |
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| Author |
Beaugrand, J.P |
| Title |
Relative importance of initial individual differences, agonistic experience, and assessment accuracy during hierarchy formation: a simulation study |
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Journal Article |
| Year |
1997 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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41 |
Issue |
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177-192 |
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Dominance; Hierarchy formation; RHP; Agonistic experience; Assessment; Self-organization; Simulation |
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This simulation study explores some conditions leading to transitivity within dominance orders. Combinations of three parameters were varied to study their consequences upon hierarchy formation and upon the degree of linearity of resultant structures. The factors studied were: (1) the importance of initial resource holding potentials (RHPs); (2) changes brought in RHPs by successive victories and defeats; and (3) accuracy of RHP assessment made by opponents. Results show that initial differences in RHP always lead to perfectly transitive chains whose rank order reflects the importance of initial differences. Even when simulated animals make important errors while assessing each other during round robin tournaments, emerging dominance structures are perfectly linear and ranks obtained in the structure are highly correlated with initial values in RHPs. Moreover, accumulated experiences of victory and/or defeat alone always lead to perfectly linear hierarchies. Their combination with initial individual differences in RHP led to the same conclusion. Even when assessment was far from being perfect, not only perfect chains were formed but initial values in RHPs significantly influenced rank order when the contribution of victory and defeat to RHP was relatively unimportant. The higher the importance of victory and defeat to RHP as compared to that of initial RHP values, the lower was the correlation between initial RHP values and the ranks order reached by individuals in the resultant hierarchies. In general also, the lower the variation within initial RHPs, the lower was the correlation between initial RHPs and ranks in the hierarchy. At a given level of initial RHP dispersion, increasing the contribution of victory and defeat to RHP diminished the correlation between initial RHP values and obtained ranks. In addition, inaccurate assessment reduced the overall correlation, especially when dispersion of initial RHP values was low and the contribution of victory and defeat relatively unimportant. These results shed some light on the controversy about the respective roles of initial individual attributes and that of patterns of resolution in the formation of animal hierarchies. We present the emergence of social order within closed systems as those simulated here as a case of self-organization. |
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Equine Behaviour @ team @ |
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4290 |
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