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| Author | Crystal, J.D. | ||||
| Title | Systematic nonlinearities in the perception of temporal intervals | Type | Journal Article | ||
| Year | 1999 | Publication | Journal of Experimental Psychology. Animal Behavior Processes | Abbreviated Journal | J Exp Psychol Anim Behav Process |
| Volume | 25 | Issue | 1 | Pages | 3-17 |
| Keywords | Animals; *Attention; Awareness; Discrimination Learning; Male; Neural Networks (Computer); *Nonlinear Dynamics; Rats; Rats, Sprague-Dawley; Sensory Thresholds; *Time Perception | ||||
| Abstract | Rats judged time intervals in a choice procedure in which accuracy was maintained at approximately 75% correct. Sensitivity to time (d') was approximately constant for short durations 2.0-32.0 s with 1.0- or 2.0-s spacing between intervals (n = 5 in each group, Experiment 1), 2.0-50.0 s with 2.0-s spacing (n = 2, Experiment 1), and 0.1-2.0 s with 0.1- or 0.2-s spacing (n = 6 in each group, Experiment 2). However, systematic departures from average sensitivity were observed, with local maxima in sensitivity at approximately 0.3, 1.2, 10.0, 24.0, and 36.0 s. Such systematic departures from an approximately constant d' are predicted by a connectionist theory of time with multiple oscillators and may require a modification of the linear timing hypothesis of scalar timing theory. | ||||
| Address | Department of Psychology, Brown University, USA. jdcrys@facstaff.wm.edu | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0097-7403 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
Notes  |
PMID:9987854 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 2776 | ||
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| Author | MacFadden, B.J.; Solounias, N.; Cerling, T.E. | ||||
| Title | Ancient diets, ecology, and extinction of 5-million-year-Old horses from florida | Type | Journal Article | ||
| Year | 1999 | Publication | Abbreviated Journal | Science | |
| Volume | 283 | Issue | 5403 | Pages | 824-827 |
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| Abstract | Six sympatric species of 5-million-year-old (late Hemphillian) horses from Florida existed during a time of major global change and extinction in terrestrial ecosystems. Traditionally, these horses were interpreted to have fed on abrasive grasses because of their high-crowned teeth. However, carbon isotopic and tooth microwear data indicate that these horses were not all C4 grazers but also included mixed feeders and C3 browsers. The late Hemphillian Florida sister species of the modern genus Equus was principally a browser, unlike the grazing diet of modern equids. Late Hemphillian horse extinctions in Florida involved two grazing and one browsing species. | ||||
| Address | Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA. Department of Anatomy, New York College of Osteopathic Medicine, New York Institute of Technology, Old Westbury, NY 11568, USA. Department of Geology | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 1095-9203 | ISBN | Medium | ||
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| Notes |
PMID:9933161 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 2652 | ||
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| Author | Heath-Lange, S.; Ha, J.C.; Sackett, G.P. | ||||
| Title | Behavioral measurement of temperament in male nursery-raised infant macaques and baboons | Type | Journal Article | ||
| Year | 1999 | Publication | American journal of primatology | Abbreviated Journal | Am. J. Primatol. |
| Volume | 47 | Issue | 1 | Pages | 43-50 |
| Keywords | Age Factors; Animal Technicians; Animals; Animals, Newborn/psychology; Behavior, Animal/*physiology; Defecation; Facial Expression; Humans; Irritable Mood; Macaca fascicularis/*psychology; Male; Papio/*psychology; Sex Characteristics; Species Specificity; Temperament/*physiology; Urination; Vocalization, Animal; Weaning | ||||
| Abstract | We define temperament as an individual's set of characteristic behavioral responses to novel or challenging stimuli. This study adapted a temperament scale used with rhesus macaques by Schneider and colleagues [American Journal of Primatology 25:137-155, 1991] for use with male pigtailed macaque (Macaca nemestrina, n = 7), longtailed macaque (M. fascicularis, n = 3), and baboon infants (Papio cynocephalus anubis, n = 4). Subjects were evaluated twice weekly for the first 5 months of age during routine removal from their cages for weighing. Behavioral measures were based on the subject's interactions with a familiar human caretaker and included predominant state before capture, response to capture, contact latency, resistance to tester's hold, degree of clinging, attention to environment, defecation/urination, consolability, facial expression, vocalizations, and irritability. Species differences indicated that baboons were more active than macaques in establishing or terminating contact with the tester. Temperament scores decreased over time for the variables Response to Capture and Contact Latency, indicating that as they grew older, subjects became less reactive and more bold in their interactions with the tester. Temperament scores changed slowly with age, with greater change occurring at younger ages. The retention of variability in reactivity between and within species may be advantageous for primates, reflecting the flexibility necessary to survive in a changing environment. | ||||
| Address | Department of Psychology and Regional Primate Research Center, University of Washington, Seattle, USA. crgsjh@vmmc.org | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0275-2565 | ISBN | Medium | ||
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| Notes |
PMID:9888720 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 4117 | ||
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| Author | Farmer-Dougan, V.; Dougan, J. | ||||
| Title | The Man Who Listens To Behavior: Folk Wisdom And Behavior Analysis From A Real Horse Whisperer | Type | Journal Article | ||
| Year | 1999 | Publication | JOURNAL OF THE EXPERIMENTAL ANALYSIS OF BEHAVIOR | Abbreviated Journal | J Exp Anal Behav |
| Volume | 72 | Issue | 1 | Pages | 139-149 |
| Keywords | positive reinforcement, aversive control, learned helplessness, language, biological constraints, | ||||
| Abstract | The popular novel and movie The Horse Whisperer are based on the work of several real-life horse whisperers, the most famous of whom is Monty Roberts. Over the last 50 years, Roberts has developed a technique for training horses that is both more effective and less aversive than traditional training techniques. An analysis of Roberts` methods (as described in his book, The Man Who Listens to Horses) indicates a deep understanding of behavioral principles including positive reinforcement, timeout, species-specific defense reactions, learned helplessness, and the behavioral analysis of language. Roberts developed his theory and techniques on the basis of personal experience and folk wisdom, and not as the result of formal training in behavior analysis. Behavior analysts can clearly learn from such insightful yet behaviorally incorrect practitioners, just as such practitioners can benefit from the objective science of behavior analysts. |
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0022-5002 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes |
PMID:16812908 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 1829 | ||
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| Author | Powell, D.M. | ||||
| Title | Preliminary evaluation of porcine zona pellucida (PZP) immunocontraception for behavioral effects in feral horses (Equus caballus) | Type | Journal Article | ||
| Year | 1999 | Publication | Journal of Applied Animal Welfare Science : JAAWS | Abbreviated Journal | J Appl Anim Welf Sci |
| Volume | 2 | Issue | 4 | Pages | 321-335 |
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| Abstract | Successful management of captive populations of wild animals requires effective control of reproduction. Contraception is one tool for controlling reproduction of animals in zoos; however, the options available to the animal manager are limited. Contraceptives vary in efficacy, reversibility, and side effects, and thus may not be suitable for widespread use. One consideration when selecting a contraceptive is its potential for side effects on behavior, especially given the fact that reproduction plays such a prominent role in the biology of any species. To date, there have been few evaluations of contraceptives for behavioral effects, and those that have been conducted have focused on hormone-based contraceptives. This study sought to evaluate a novel method of population control, immunocontraception, for behavioral effects in a population of feral horses. Porcine zona pellucida (PZP) immunocontraception prevents fertilization of ova and does not alter normal hormone secretion patterns. It therefore should leave the animal behaviorally intact in terms of reproductive behavior. The study examined the behavior of 43 sexually mature mares on Assateague Island during the 1997 breeding season and, with help from Earthwatch volunteers, collected observations over a 3-month period. The study found no significant differences between treated and untreated mares in general activity budget, aggression given or received, and spatial relationships relative to the stallion. These preliminary findings indicate that PZP contraception seems to have no acute behavioral effects on the behavior of individuals. The study findings also suggest that PZP could be a desirable and effective management tool for captive species in which social behavior plays an integral role in group dynamics. Analyses of group level effects and population level effects are continuing. | ||||
| Address | Department of Zoological Research, National Zoological Park, Washington, DC 20008, USA. dpowell@nzp.si.edu | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 1088-8705 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes |
PMID:16363936 | Approved | no | ||
| Call Number | Serial | 1883 | |||
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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 | Type | 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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| Abstract | 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. | ||||
| Address | Equine Research, New Zealand | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0048-0169 | ISBN | Medium | ||
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| Notes |
PMID:16032102 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 3714 | ||
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| Author | Robinson, I.H. | ||||
| Title | The human-horse relationship: how much do we know? | Type | Journal Article | ||
| Year | 1999 | Publication | Equine Veterinary Journal. Supplement | Abbreviated Journal | Equine Vet J Suppl |
| Volume | Issue | 28 | Pages | 42-45 | |
| Keywords | *Animal Husbandry/economics; Animals; *Bonding, Human-Pet; Cost-Benefit Analysis; Hobbies; *Horses; Humans; Power (Psychology); Sports | ||||
| Abstract | Human relationships or interactions with horses have varied throughout history depending on human needs, but it is horses' ability to carry a human individual that has had perhaps the greatest impact on their relationship with man. Despite our long association with the horse, there have been few studies on human-horse relationships. There is little historical evidence on individual relationships with horses but indications of strong human-horse relationships have been noted in mounted societies, such as North American Plains Indians. Riding a horse has traditionally been associated with power, and was reserved for the ruling elite in many areas. Demographic data suggest that human relationships with horses may have changed in recent times. Although the lack of land and the relatively high cost of horse care may reduce the possibility of ownership for many people, the availability of riding establishments and increases in leisure time mean that riding is no longer restricted to the upper classes. There is a wide range in type and intensity of potential interactions with horses, indicating that human-horse relationships are likely to vary considerably. Some people appear to sacrifice a great deal in order to own a horse. However, the motivation behind these activities and the process by which an individual assesses personal costs of ownership versus their perceived benefits remains to be studied. Future research should focus on characterising the human-horse relationship, and the degree of individual and cultural variation. A greater understanding of horse owner perceptions of 'costs' versus 'benefits' may also increase our understanding of the relationship and the economic importance of horses in society. | ||||
| Address | WALTHAM Centre for Pet Nutrition, Freeby Lane, Waltham-on-the-Wolds, Leics LE14 4RT, UK | ||||
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| Language | English | Summary Language | Original Title | ||
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PMID:11314234 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 4361 | ||
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| Author | 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 | Type | Journal Article | ||
| Year | 1999 | Publication | Equine Veterinary Journal. Supplement | Abbreviated Journal | Equine Vet J Suppl |
| Volume | 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 | ||||
| Abstract | 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. | ||||
| Address | University of Ghent, Faculty of Veterinary Medicine, Heidestraat 19, B-9820, Merelbeke, Belgium | ||||
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| Notes |
PMID:11314231 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 3729 | ||
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| Author | Goodwin, D. | ||||
| Title | The importance of ethology in understanding the behaviour of the horse | Type | Journal Article | ||
| Year | 1999 | Publication | Equine Veterinary Journal. Supplement | Abbreviated Journal | Equine Vet J Suppl |
| Volume | Issue | 28 | Pages | 15-19 | |
| Keywords | *Animal Husbandry; Animals; *Behavior, Animal; Bonding, Human-Pet; Evolution; *Horses; Social Behavior | ||||
| Abstract | Domestication has provided the horse with food, shelter, veterinary care and protection, allowing individuals an increased chance of survival. However, the restriction of movement, limited breeding opportunities and a requirement to expend energy, for the benefit of another species, conflict with the evolutionary processes which shaped the behaviour of its predecessors. The behaviour of the horse is defined by its niche as a social prey species but many of the traits which ensured the survival of its ancestors are difficult to accommodate in the domestic environment. There has been a long association between horses and man and many features of equine behaviour suggest a predisposition to interspecific cooperation. However, the importance of dominance in human understanding of social systems has tended to overemphasize its importance in the human-horse relationship. The evolving horse-human relationship from predation to companionship, has resulted in serial conflicts of interest for equine and human participants. Only by understanding the nature and origin of these conflicts can ethologists encourage equine management practices which minimise deleterious effects on the behaviour of the horse. | ||||
| Address | Anthrozoology Institute, University of Southampton, Bassett Crescent East, Southampton S016 7PX, UK | ||||
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PMID:11314229 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 1920 | ||
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| Author | Minero, M.; Canali, E.; Ferrante, V.; Verga, M.; Odberg, F.O. | ||||
| Title | Heart rate and behavioural responses of crib-biting horses to two acute stressors | Type | Journal Article | ||
| Year | 1999 | Publication | The Veterinary Record | Abbreviated Journal | Vet. Rec. |
| Volume | 145 | Issue | 15 | Pages | 430-433 |
| Keywords | Acute Disease; Animals; Behavior, Animal/*physiology; Female; Heart Rate/*physiology; Horse Diseases/*physiopathology; Horses/*physiology/psychology; Male; Stereotyped Behavior/*physiology; Stress/physiopathology/psychology/*veterinary | ||||
| Abstract | The heart rate and behaviour of 14 adult saddle horses, eight crib-biters and six normal controls, were investigated. Initially, the relationship between crib-biting and heart rate was investigated while the horses were undisturbed. The horses were tested when restrained with a lip twitch, and assessed when they were exposed suddenly to the rapid inflation of a balloon. The heart rate of the crib-biters during crib-biting was lower than during other behaviours. The crib-biters had a higher overall mean heart rate (P<0.05) suggesting that they may have had a higher basal sympathetic activity. After the application of the twitch, all the horses had a transient increase in heart rate which returned to basal values more rapidly in the crib-biters. The crib-biters were less reactive to the lip twitch, five of the six investigated remaining calm, and after the release of the twitch, they spent more time nibbling (P<0.05) than the control horses. The crib-biters reacted more strongly to the inflation of the balloon (three of the six reacted), and after it had been inflated they spent more time walking in the box. | ||||
| Address | Instituto di Zootecnica Veterinaria, Universita degli Studi di Milano, Italy | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0042-4900 | ISBN | Medium | ||
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| Notes |
PMID:10755589 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 1921 | ||
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