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| Author |
Vallortigara G.; Regolin L.; Pagni P. |
| Title |
Detour behaviour, imprinting and visual lateralization in the domestic chick |
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Journal Article |
Year  |
1999 |
Publication |
Cognitive Brain Research |
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| Volume |
7 |
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Pages |
307-320 |
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refbase @ user @ |
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3461 |
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| Author |
Thomas R. Zentall |
| Title |
Animal Cognition: The Bridge BetweenAnimal Learning and Human Cognition |
Type |
Journal Article |
| Year |
1999 |
Publication |
Psychological Science |
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| Volume |
10 |
Issue |
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Pages |
206-208 |
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refbase @ user @ |
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3481 |
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| Author |
Mullin, M.H. |
| Title |
MIRRORS AND WINDOWS: Sociocultural Studies of Human-Animal Relationships |
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Journal Article |
| Year |
1999 |
Publication |
Annual Review of Anthropology |
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| Volume |
28 |
Issue |
1 |
Pages |
201-224 |
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| Abstract |
Humans' relationships with animals, increasingly the subject of controversy, have long been of interest to those whose primary aim has been the better understanding of humans' relationships with other humans. Since this topic was last reviewed here, human-animal relationships have undergone considerable reexamination, reflecting key trends in the history of social analysis, including concerns with connections between anthropology and colonialism and with the construction of race, class, and gender identities. There have been many attempts to integrate structuralist or symbolic approaches with those focused on environmental, political, and economic dimensions. Human-animal relationships are now much more likely to be considered in dynamic terms, and consequently, there has been much interdisciplinary exchange between anthropologists and historians. Some research directly engages moral and political concerns about animals, but it is likely that sociocultural research on human-animal relationships will continue to be as much, if not more, about humans. |
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3534 |
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| Author |
Hanggi, E.B. |
| Title |
Interocular transfer of learning In horses (Equus caballus) |
Type |
Journal Article |
| Year |
1999 |
Publication |
Journal of Equine Veterinary Science |
Abbreviated Journal |
J Equine Vet Sci |
| Volume |
19 |
Issue |
8 |
Pages |
518-524 |
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Equine Behaviour @ team @ |
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3564 |
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| Author |
Timney, B.; Keil, K. |
| Title |
Local and global stereopsis in the horse |
Type |
Journal Article |
| Year |
1999 |
Publication |
Vision Research |
Abbreviated Journal |
Vision Res |
| Volume |
39 |
Issue |
10 |
Pages |
1861-1867 |
| Keywords |
Animals; Depth Perception/*physiology; Female; Horses/*physiology; Pattern Recognition, Visual/physiology; Psychophysics; Sensory Thresholds/physiology; Vision, Binocular/physiology; Vision, Monocular/physiology |
| Abstract |
Although horses have laterally-placed eyes, there is substantial binocular overlap, allowing for the possibility that these animals have stereopsis. In the first experiment of the present study we measured local stereopsis by obtaining monocular and binocular depth thresholds for renal depth stimuli. On all measures, the horses' binocular performance was superior to their monocular. When depth thresholds were obtained, binocular thresholds were several times superior to those obtained monocularly, suggesting that the animals could use stereoscopic information when it was available. The binocular thresholds averaged about 15 min arc. In the second experiment we obtained evidence for the presence of global stereopsis by testing the animals' ability to discriminate between random-dot stereograms with and without consistent disparity information. When presented with such stimuli they showed a strong preference for the cyclopean equivalent of the positive stimulus with the real depth. These results provide the first behavioral demonstration of a full range of stereoscopic skills in a lateral-eyed mammal. |
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Department of Psychology, Faculty of Social Science, University of Western Ontario, London, Canada. timney@julian.uwo.ca |
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English |
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0042-6989 |
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PMID:10343877 |
Approved |
yes |
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Equine Behaviour @ team @ |
Serial |
3580 |
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| Author |
Lejeune, H.; Macar, F.; Zakay, D. |
| Title |
Attention and timing: dual-task performance in pigeons |
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Journal Article |
| Year |
1999 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
45 |
Issue |
1-3 |
Pages |
141-157 |
| Keywords |
Timing; Dual task; Attention; Pigeons |
| Abstract |
Pigeons were exposed to an analog of a `dual-task' procedure used to test attentional models of timing in humans. After separate training on an auditory duration discrimination and on a variable ratio (VR) schedule, VR episodes lasting for 5 s were superimposed on the stimuli to be timed, either early (E) or late (L) during the trial. Trials with VR yielded underestimation of the target durations (increased % of `short' choices), relative to trials without VR, and this effect was stronger under the L than under the E condition. Data were similar to those collected with humans and support attentional models of timing according to which the simultaneous non-timing task uses processing resources which are diverted from the timing mechanisms. |
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Equine Behaviour @ team @ |
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3582 |
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| Author |
DUNN, L.J. |
| Title |
PRELIMINARY INVESTIGATION OF EQUINE LEARNING AND MEMORY |
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Journal Article |
| Year |
1999 |
Publication |
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ABSTRACT
Six horses demonstrated observation and discrimination learning and memory ability. The purpose of this study was to gain further knowledge in the area of equine learning. Performance on each task was compared in a single subject design. Subjects learned to discriminate between a black and a white bucket. The criterion for learning was set at 80% correct black bucket choice. All subjects successfully performed the discrimination task by the eighth session. Observation learning was unsuccessful; no subject reached the 80% correct criterion. Five horses were tested for memory retention of the discrimination task three weeks after the initial learning. All subjects performed the discrimination by the second session of two. These data support existing results from similar learning and memory tasks. |
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DEPARTMENT OF PSYCHOLOGY |
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MISSOURI WESTERN STATE COLLEGE |
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Equine Behaviour @ team @ |
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3621 |
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| Author |
Hanggi, E.B. |
| Title |
Categorization Learning in Horses (Equus caballus) |
Type |
Journal Article |
| Year |
1999 |
Publication |
Journal of Comparative Psychology |
Abbreviated Journal |
J. Comp. Psychol. |
| Volume |
113 |
Issue |
3 |
Pages |
243-252 |
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| Abstract |
Categorization learning was investigated in 2 horses (Equus caballus). Both horses learned to select a 2-dimensional black stimulus with an open center instead of a filled stimulus in a 2-choice discrimination task. After a criterion of 10 out of 10 correct responses in a random series for 2 consecutive sessions was reached, 15 additional pairs of open-center versus filled stimuli were tested. Each was run to criterion and then incorporated into sessions of randomly mixed problems. Both horses solved the 1st problem by simple pattern discrimination and showed evidence of categorical processing for subsequent problems. New pairs were learned with few or no errors, and correct responses on novel trials were significantly above chance. These results suggest that the horses were making their selections on the basis of shared characteristics with the training stimuli and were using categorization skills in problem solving. |
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yes |
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Equine Behaviour @ team @ |
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3678 |
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| Author |
Rogers, C.W.; Davies, A.S.; Pfeiffer, D.U.; Davie, P.S. |
| Title |
Linear and temporal stride characteristics of 3-day event horses at a CCI*** 3-day event horse inspection |
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Journal Article |
| Year |
1999 |
Publication |
New Zealand Veterinary Journal |
Abbreviated Journal |
N Z Vet J |
| Volume |
47 |
Issue |
6 |
Pages |
193-197 |
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AIMS: To quantify the linear and temporal characteristics of the trot of 3-day event horses during the preliminary horse inspection of an advanced grade CCI* 3-day event. METHODS: A cross sectional study was made of the kinematics of 24 3-day-event horses during the first horse inspection at a CCI* level S-day event. Video footage was digitised and linear and temporal measurements were made. RESULTS: The horses trotted for an average of 10.44+/-1.55 strides. Spatial measurements were made on an average of 5.66+/-0.92 consecutive strides when the horses were within the calibration zone. The horses increased and then obtained a constant velocity within the calibration zone. Trotting on the asphalt track did not alter the relationships between stride length, stride duration and velocity when compared with previously published values. Horse-specific differences in stance and retraction percentages were identified. CONCLUSION: Horse specific differences were identified that may contribute to each horse's unique gait or kinematic fingerprint. It is proposed that the initiation of, and completion of, stance by the hind limb first may represent engagement of the hind quarters and be a response to dressage training. |
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Equine Research, New Zealand |
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English |
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0048-0169 |
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| Notes |
PMID:16032102 |
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no |
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Equine Behaviour @ team @ |
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3714 |
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Odberg, F.O.; Bouissou, M.F. |
| Title |
The development of equestrianism from the baroque period to the present day and its consequences for the welfare of horses |
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Journal Article |
| Year |
1999 |
Publication |
Equine Veterinary Journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
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Issue |
28 |
Pages |
26-30 |
| Keywords |
Animal Husbandry/*history/standards; Animal Welfare/*history; Animals; Bonding, Human-Pet; History, 15th Century; History, 16th Century; History, 17th Century; History, 18th Century; History, 19th Century; History, 20th Century; *Horses; Humans; Stress/etiology/history/veterinary |
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Many saddle horses are slaughtered at a young age which could be indicative of a welfare problem. Bad riding is probably an underestimated source of poor welfare. Widespread knowledge of 'academic' riding should be encouraged and should be beneficial to all horses, at all schooling levels, for all purposes. In particular, 18th century principles tend to be forgotten and in this article the authors illustrate some differences to modern dressage. Various suggestions are made in order to improve welfare. |
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University of Ghent, Faculty of Veterinary Medicine, Heidestraat 19, B-9820, Merelbeke, Belgium |
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PMID:11314231 |
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Equine Behaviour @ team @ |
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3729 |
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