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Author Miyashita, Y.; Nakajima, S.; Imada, H.
Title Panel-touch behavior of horses established by an autoshaping procedure Type Journal Article
Year 1999 Publication Psychological Reports Abbreviated Journal Psychol Rep
Volume 85 Issue (up) 3 Pt 1 Pages 867-868
Keywords Animals; Behavior, Animal/*physiology; Conditioning (Psychology)/*physiology; Horses/physiology; *Touch
Abstract Panel-touch behavior of 3 geldings was successfully established by a response-termination type of autoshaping procedure. An omission or negative contingency introduced after the training of an animal, however, decreased the response rate to a near-zero level.
Address Department of Psychology, Kwansei Gakuin University, Nishinomiya, Japan
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ISSN 0033-2941 ISBN Medium
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Notes PMID:10672748 Approved no
Call Number refbase @ user @ Serial 1926
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Author Ruggieri, V.
Title The running horse stops: the hypothetical role of the eyes in imagery of movement Type Journal Article
Year 1999 Publication Perceptual and motor skills Abbreviated Journal Percept Mot Skills
Volume 89 Issue (up) 3 Pt 2 Pages 1088-1092
Keywords Adult; Cerebral Cortex/physiology; Eye Movements/*physiology; Female; Functional Laterality/physiology; Head/physiology; Humans; *Imagination; Models, Neurological; *Motion Perception; Movement/physiology; *Ocular Physiology; *Optical Illusions; Posture/physiology
Abstract To examine the hypothetical role of the eyes in visual mental imagery of movement 72 undergraduate women students in psychology were asked to imagine a running horse and then to produce the same mental image without moving the eyes and the head. In 59% of the subjects interesting modifications of the imagined movement appeared: 37% observed an inhibition of the movement and 19% an evident slowing up of the moving figure. The interpretation of this result was made by hypothesizing that the eyes are concretely involved in visual imagery processes.
Address University of Rome La Sapienza
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ISSN 0031-5125 ISBN Medium
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Notes PMID:10710755 Approved no
Call Number refbase @ user @ Serial 94
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Author Kolter, L.; Schach,C.; Weber, T.
Title Habitat use of feral and Przewalski's horses Type Journal Article
Year 1999 Publication Natur- und Kulturlandschaft Abbreviated Journal
Volume 3 Issue (up) 332-342 Pages
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Call Number Equine Behaviour @ team @ Serial 2333
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Author Lilienfeld, S.O.; Gershon, J.; Duke, M.; Marino, L.; de Waal, F.B.
Title A preliminary investigation of the construct of psychopathic personality (psychopathy) in chimpanzees (Pan troglodytes) Type Journal Article
Year 1999 Publication Journal of comparative psychology (Washington, D.C. : 1983) Abbreviated Journal J Comp Psychol
Volume 113 Issue (up) 4 Pages 365-375
Keywords Age Factors; Analysis of Variance; Animals; Antisocial Personality Disorder/*diagnosis/psychology; Ethology/*methods; Female; Male; Observer Variation; Pan troglodytes/*psychology; Psychiatric Status Rating Scales/*standards; Reproducibility of Results; Sex Characteristics; *Social Behavior
Abstract Although the construct of psychopathy has received considerable attention in humans, its relevance to other animals is largely unknown. We developed a measure of psychopathy for use in chimpanzees (Pan troglodytes), the Chimpanzee Psychopathy Measure (CPM), and asked 6 raters to complete this index on 34 chimpanzees. The CPM (a) demonstrated satisfactory interrater reliability and internal consistency; (b) exhibited marginally significant sex differences (males > females); (c) correlated positively with measures of extraversion, agreeableness, and observational ratings of agonism, sexual activity, daring behaviors, teasing, silent bluff displays, and temper tantrums, and negatively with observational ratings of generosity; and (d) demonstrated incremental validity above and beyond a measure of dominance. Although further validation of the CPM is needed, these findings suggest that the psychopathy construct may be relevant to chimpanzees.
Address Department of Psychology, Emory University, Atlanta, Georgia 30322, USA. scott@ss.emory.edu
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Series Volume Series Issue Edition
ISSN 0735-7036 ISBN Medium
Area Expedition Conference
Notes PMID:10608560 Approved no
Call Number refbase @ user @ Serial 193
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Author Choleris, E.; Kavaliers, M.
Title Social Learning in Animals: Sex Differences and Neurobiological Analysis Type Journal Article
Year 1999 Publication Pharmacology Biochemistry and Behavior Abbreviated Journal Pharmacol. Biochem. Behav.
Volume 64 Issue (up) 4 Pages 767-776
Keywords Observational learning; Social learning; Individual learning; Imitation; Social constraints; Social facilitation; male-female differences; Gender differences
Abstract Social learning where an “individual's behavior is influenced by observation of, or interaction with, another animal or its products” has been extensively documented in a broad variety of species, including humans. Social learning occurs within the complex framework of an animal's social interactions that are markedly affected by factors such as dominance hierarchies, family bonds, age, and sex of the interacting individuals. Moreover, it is clear that social learning is influenced not only by important sexually dimorphic social constraints but also that it involves attention, motivational, and perceptual mechanisms, all of which exhibit substantial male-female differences. Although sex differences have been demonstrated in a wide range of cognitive and behavioral processes, investigations of male-female differences in social learning and its neurobiological substrates have been largely neglected. As such, sex differences in social learning and its neurobiological substrates merit increased attention. This review briefly considers various aspects of the study of social learning in mammals, and indicates where male-female differences have either been described, neglected and, or could have a potential impact. It also describes the results of neurobiological investigations of social learning and considers the relevance of these findings to other sexually dimorphic cognitive processes.
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Call Number refbase @ user @ Serial 575
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Author Tomasello, M.; Hare, B.; Agnetta, B.
Title Chimpanzees, Pan troglodytes, follow gaze direction geometrically Type Journal Article
Year 1999 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 58 Issue (up) 4 Pages 769-777
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Abstract Two experiments on chimpanzee gaze following are reported. In the first, chimpanzee subjects watched as a human experimenter looked around various types of barriers. The subjects looked around each of the barriers more when the human had done so than in a control condition (in which the human looked in another direction). In the second experiment, chimpanzees watched as a human looked towards the back of their cage. As they turned to follow the human's gaze a distractor object was presented. The chimpanzees looked at the distractor while still following the human's gaze to the back of the cage. These two experiments effectively disconfirm the low-level model of chimpanzee gaze following in which it is claimed that upon seeing another animate being's gaze direction chimpanzees simply turn in that direction and look around for something interesting. Rather, they support the hypothesis that chimpanzees follow the gaze direction of other animate beings geometrically to specific locations, in much the same way as human infants. The degree to which chimpanzees have a mentalistic interpretation of the gaze and/or visual experience of others is still an open question.
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Call Number refbase @ user @ Serial 587
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Author Hsu, Y.; Wolf, L.L.
Title The winner and loser effect: integrating multiple experiences Type Journal Article
Year 1999 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 57 Issue (up) 4 Pages 903-910
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Abstract An important question in state-dependent behaviour is how multiple influences on state are integrated to determine current behaviour. Aggressive behaviour is known to be affected by a prior contest experience. Nevertheless, whether and how multiple prior fighting experiences are integrated into a fighting decision remain unexplored. In this study, individuals ofRivulus marmoratus(Cyprinodontidae), a hermaphroditic fish, were given different combinations of two prior fighting experiences to investigate: (1) the effect of penultimate experiences on the probability of winning a subsequent contest; (2) the relative effect of a recent win and loss; and (3) whether the effect of a winning experience was as short lived as observed in other species. Penultimate and recent fighting experiences were given to the test fish approximately 48 and 24 h prior to the dyadic contests, respectively. From the results of the five types of contests staged, we conclude that: (1) penultimate fighting experiences had a significant effect on the probability of winning a subsequent contest; (2) a more recent experience had a more pronounced effect than an earlier experience, which suggested that the effect of a fighting experience would decay and/or the effect of a recent experience would interfere with the effect of an earlier experience; (3) no asymmetric effect between a winning experience and a losing experience was detected; and (4) the effect of both a winning and a losing experience lasted for at least 48 h inR. marmoratuswhich was the maximum time tested in these experiments. The possible reasons for the differences in results among studies of experience effects on contest outcomes are discussed.
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Call Number refbase @ user @ Serial 865
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Author Bonabeau, E.; Theraulaz, G.; Deneubourg, J-L.
Title Dominance orders in animal societies: the selforganization Type Journal Article
Year 1999 Publication Bulletin of Mathematical Biology Abbreviated Journal Bull Math Biol
Volume 61 Issue (up) 4 Pages 727-757
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Abstract In previous papers (Theraulaz et al. 1995, Bonabeau et al. 1996) we suggested, following Hogeweg and Hesper (1983, 1985), that the formation of dominance orders in animal societies could result from a selforganizing process involving a double reinforcement mechanism: winners reinforce their probability of winning and losers reinforce their probability of losing. This assumption, and subsequent models, were based on empirical data on primitively eusocial wasps (Polistes dominulus). By...
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Call Number Equine Behaviour @ team @ Serial 2172
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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 (up) 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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ISSN 1088-8705 ISBN Medium
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Notes PMID:16363936 Approved no
Call Number Serial 1883
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Author Templeton, J. J.; Kamil, A. C.; Balda, R. P.
Title Sociality and social learning in two species of corvids: The pinyon jay (Gymnorhinus cyanocephalus) and the Clark's nutcracker (Nucifraga columbiana). Type Journal Article
Year 1999 Publication Journal of Comparative Psychology Abbreviated Journal J. Comp. Psychol.
Volume 113 Issue (up) 4 Pages 450-455
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Abstract The hypothesis that social learning is an adaptive specialization for social living predicts that social species should learn better socially than they do individually, but that nonsocial species should not exhibit a similar enhancement of performance under social learning conditions. The authors compared individual and social learning abilities in 2 corvid species: the highly social pinyon jay (Gymnorhinus cyanocephalus) and the less social Clark's nutcracker (Nucifraga columbiana). The birds were tested on 2 different tasks under individual and social learning conditions. Half learned a motor task individually and a discrimination task socially; the other half learned the motor task socially and the discrimination task individually. Pinyon jays learned faster socially than they did individually, but nutcrackers performed equally well under both learning conditions. Results support the hypothesis that social learning is an adaptive specialization for social living in pinyon jays. (PsycINFO Database Record (c) 2007 APA, all rights reserved)
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Call Number Equine Behaviour @ team @ Serial 2191
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