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Title |
Inferences about the location of food in the great apes (Pan paniscus, Pan troglodytes, Gorilla gorilla, and Pongo pygmaeus) |
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2004 |
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Journal of Comparative Psychology |
Abbreviated Journal |
J. Comp. Psychol. |
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118 |
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2 |
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232 |
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Bonobos (Pan paniscus; n = 4), chimpanzees (Pan troglodytes; n = 12), gorillas (Gorilla gorilla; n = 8), and orangutans (Pongo pygmaeus; n = 6) were presented with 2 cups (1 baited) and given visual or auditory information about their contents. Visual information consisted of letting subjects look inside the cups. Auditory information consisted of shaking the cup so that the baited cup produced a rattling sound. Subjects correctly selected the baited cup both when they saw or heard the food. Nine individuals were above chance in both visual and auditory conditions. More important, subjects as a group selected the baited cup when only the empty cup was either shown or shaken, which means that subjects chose correctly without having seen or heard the food (i.e., inference by exclusion). Control tests showed that subjects were not more attracted to noisy cups, avoided shaken noiseless cups, or learned to use auditory information as a cue during the study. It is concluded that subjects understood that the food caused the noise, not simply that the noise was associated with the food. (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
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food location; inference ; apes;auditory information;visual information |
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yes |
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Equine Behaviour @ team @ |
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3057 |
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Gould, J.L. |
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Thinking about thinking: how Donald R. Griffin (1915-2003) remade animal behavior |
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2004 |
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Animal Cognition |
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Anim. Cogn. |
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7 |
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1 |
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1-4 |
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Equine Behaviour @ team @ |
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3092 |
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Murphy, J.; Waldmann, T.; Arkins, S. |
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Sex differences in equine learning skills and visuo-spatial ability |
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2004 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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87 |
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1-2 |
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119-130 |
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Horses; Sex differences; Visuo-spatial ability; Learning |
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There is evidence of superior visuo-spatial ability in males compared to females in most species investigated to-date. However, no known studies have addressed this issue in the equine. Equine visuo-spatial ability was investigated using a novel test apparatus with a sample of 62 horses (males=34 and females=28) during a series of six tests, where the horses were required to access a food source. The test apparatus consisted of a series of four adjacent stalls, each of which had a feed bin and a moveable barrier. The test apparatus was designed such that the breastplate barriers controlled and limited access by the horses to feed bins in all but one stall during each test. Male horses performed such that there were significant differences (P<0.05) in the ability of the subjects to complete all six tests in a mean time of 30 s or less per test. There were significant differences in mean completion times for male subjects between test 1 and test 2 (P<0.05), test 1 and test 3 (P<0.001), test 1 and test 4 (P<0.05) and test 1 and test 5 (P<0.05). There were no significant differences in mean completion times between any of the six tests for female subjects. Males had a lower mean total number of errors during all tests. Male horses also successfully completed significantly more tests than females (P<0.05). These results provide the first behavioural demonstration of superior visuo-spatial ability in male horses, similar to that reported in other species. |
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Equine Behaviour @ team @ |
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3560 |
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Williams, J.L.; Friend, T.H.; Nevill, C.H.; Archer, G. |
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The efficacy of a secondary reinforcer (clicker) during acquisition and extinction of an operant task in horses |
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2004 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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88 |
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3-4 |
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331-341 |
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Equine; Horse; Clicker training; Operant conditioning; Secondary reinforcers |
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“Clicker training” is a popularly promoted training method based on operant conditioning with the use of a secondary reinforcer (the clicker). While this method draws from theories of learning and is used widely, there has been little scientific investigation of its efficacy. We used 60 horses, Equus callabus, and assigned each horse to one of six reinforcement protocols. The reinforcement protocols involved combinations of reinforcers administered (primary versus secondary plus primary), schedule of reinforcement (continuous versus variable ratio), and reinforcers applied during extinction (none or secondary). There were no differences (P>=0.11) between horses which received a secondary reinforcer (click) followed by the primary reinforcer (food) and those which received only the primary reinforcer (food) in the number of trials required to train the horses to touch their noses to a plastic cone (operant response). There also were no differences (P>=0.12) between horses which received the secondary reinforcer plus primary reinforcer and those which received only the primary reinforcer in regards to the number of trials to extinction. We conclude that there is no difference in the amount of training required to learn the operant task or in the task's resistance to extinction between horses that received a secondary reinforcer followed by a primary reinforcer versus horses which received only a primary reinforcer. |
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Equine Behaviour @ team @ |
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3581 |
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Birke, L.; Bryld, M.; Lykke, N. |
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Animal Performances: An Exploration of Intersections between Feminist Science Studies and Studies of Human/Animal Relationships |
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2004 |
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Feminist Theory |
Abbreviated Journal |
Fem Theor |
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5 |
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2 |
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167-183 |
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Feminist science studies have given scant regard to non-human animals. In this paper, we argue that it is important for feminist theory to address the complex relationships between humans and other animals, and the implications of these for feminism. We use the notion of performativity, particularly as it has been developed by Karen Barad, to explore the intersections of feminism and studies of the human/animal relationship. Performativity, we argue, helps to challenge the persistent dichotomy between human/culture and animals/nature. It emphasizes, moreover, how animality is a doing or becoming, not an essence; so, performativity allows us to think about the complexity of human/animal interrelating as a kind of choreography, a co-creation of behaviour. We illustrate the discussion using the example of the laboratory rat, who can be thought of both in terms of a materialization of specific scientific practices and as active participants in the creation of their own meaning, alongside the human participants in science. There are three, intertwined, senses in which we might think about performativity – that of animality, of humannness, and of the relationship between the two. Bringing animals into discussions about performativity poses questions for both feminist theory and for the study of human/animal relationships, we argue: both human and animal can conjointly be engaged in reconfiguring the world, and our theorizing must reflect that complexity. We are all matter, and we all matter. |
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10.1177/1464700104045406 |
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no |
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Equine Behaviour @ team @ |
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3594 |
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McBride, S.D.; Hemmings, A.; Robinson, K. |
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A preliminary study on the effect of massage to reduce stress in the horse |
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2004 |
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Journal of Equine Veterinary Science |
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24 |
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2 |
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76-81 |
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The use of massage (as a potential form of acupressure) has long been documented as a human relaxation aid. However, little scientific research has been carried out into its potential use as a form of stress reduction in the horse. This preliminary study investigated the effect of massage at six different sites (thoracic trapezius [withers], mid-brachiocephalicus, cervical ventral serrate and cervical trapezius [mid-neck], proximal gluteal fascia and proximal superficial gluteal [croup], proximal and mid-semitendinosus [second thigh], lateral triceps, proximal extensor carpi radialis and proximal common digital extensor [forearm], proximal brachiocephalicus, proximal splenius and ear [poll and ears) on stress-related behavioral and physiological (heart rate [HR]) measures in the horse. Ten riding school ponies/horses were massaged at each of the six sites (three preferred and three nonpreferred sites of allogrooming (mutual grooming between conspecifics) and changes in HR and behavior were recorded. The results indicated that during massage, all sites except the forearm resulted in a significant reduction in HR (P < .05) with massage at the withers, mid-neck, and croup having the greatest effect (preferred sites of allogrooming). Massage at preferred sites of allogrooming also elicited significantly more (P < .05) positive behavioral responses compared with the three nonpreferred sites. The practical implications of this study are discussed. |
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Equine Behaviour @ team @ |
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3617 |
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McGee, S.; Smith, H.V. |
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Accompanying pre-weaned Thoroughbred (Equus caballus) foals while separated from the mare during covering reduces behavioural signs of distress exhibited |
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2004 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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88 |
Issue |
1-2 |
Pages |
137-147 |
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Distress; Foals; Maternal separation; Stereotypies; Welfare |
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Some Thoroughbred stallion farms separate the mare from the foal during breeding, leaving the foal alone in its stall. Such separation often leads to distress in the foal, as evidenced by behavioural indicators such as vocalisations, pacing or moving about, pawing and striking the body against solid objects. This study examined whether the foal's distress is reduced if a handler accompanies it during the period of separation. A total of 57 foals on an Irish stud farm were observed: 27 foals were accompanied during separation and 30 were left in isolation but discretely observed from outside the stall. On average, unaccompanied foals vocalised at significantly (P<0.001) shorter intervals (14.8 s versus 26.8 s), and spent significantly (P<0.05) more time pawing (29.6 s versus 6.8 s) than accompanied ones. In addition, 17 of the unaccompanied foals hurled themselves against a solid object on at least one occasion, while not one of the accompanied foals did this (P<0.001). Age, gender and number of times the foal had been previously separated from the mare while she was being teased or covered were not significantly related to any of the behavioural indicators of distress. Overall, the data provide clear evidence that accompanying a foal reduces the distress that it exhibits when separated from the mare. This procedure has obvious welfare benefits in the short term, in that the foal both experiences less distress and has a reduced likelihood of injuring itself, and it may have longer-term benefits by reducing the chance of the animal later developing a locomotory stereotypical behaviour. |
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Equine Behaviour @ team @ |
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3639 |
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Geisbauer, G.; Griebel, U.; Schmid, A.; Timney, B |
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Brightness discrimination and neutral point |
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2004 |
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Canadian Journal of Zoology |
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Can. J. Zool |
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82 |
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4 |
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660-670 |
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Abstract: Equine brightness discrimination ability and color discrimination were measured using a two-choice discrimination
task. Two Haflinger horses (Equus caballus L., 1758) were trained to discriminate 30 different shades of grey
varying from low to high relative brightness. Their ability to distinguish shades of grey was poor, with calculated
Weber fractions of 0.42 and 0.45. In addition, a “neutral point” test to determine the dimensionality of color vision
was carried out. Three hues of blue-green were tested versus a range of grey targets with brightnesses similar to those
of the blue-green targets. A neutral point was found at about 480 nm. Thus, we can conclude that horses possess
dichromatic color vision. |
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Equine Behaviour @ team @ |
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3649 |
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PNR Powers[1]; AJ Harrison[1] |
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Influences of a rider on the rotation of the horse-rider system during jumping |
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2004 |
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Equine and Comparative Exercise Physiology |
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1 |
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33-40 |
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Equine Behaviour @ team @ |
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3662 |
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Peham, C.; Licka, T.; Schobesberger, H.; Meschan, E. |
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Influence of the rider on the variability of the equine gait |
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2004 |
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Human Movement Science |
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European Workshop on Movement Science |
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23 |
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5 |
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663-671 |
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The aim of this study was to show that the motion pattern of a well-ridden horse varies less than the motion pattern of an unridden horse. In order to do so, we recorded the motion of two markers, one attached to the dorsal spinous processus of lumbar vertebra L4, the other to the right fore hoof. In total, we measured 21 horses in trot, ridden and unridden, with a fitting and with a non-fitting saddle. After breaking down the entire time series of the three-dimensional motion of the markers into their respective motion cycles, we computed a measure of motion pattern variability for the motion as well as for the derivatives (velocity and acceleration) along each of the three principal dimensions. Two of six variables (velocity and acceleration in the forward direction) displayed a significant discrimination between the ridden and the unridden case, and demonstrated the beneficial effect of a rider on the horse's motion pattern variability. Saddle fit was shown to have also an influence on motion variability: variability of two variables (velocity and of acceleration in forward direction) was significantly lower with a fitting saddle compared to a non-fitting saddle, a third variable (acceleration in the transversal direction) showed a significant difference also. This new method offers an objective evaluation of saddle fit, and a sensitive assessment of the quality of the rider in the moving horse. |
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Equine Behaviour @ team @ |
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3670 |
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