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Equine and Animal Cognition Reference Database

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Author Ristau, C.A. url  openurl
  Title Language, cognition, and awareness in animals? Type Journal Article
  Year 1983 Publication Ann. N.Y. Acad. Sci. Abbreviated Journal  
  Volume 406 Issue 1 Pages 170-186  
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  Call Number Equine Behaviour @ team @ Serial 2952  
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Author Wimmer H; Perner J openurl 
  Title Beliefs about beliefs: representation and constraining function of wrong beliefs in young children's understanding of deception Type Journal Article
  Year 1983 Publication Cognition Abbreviated Journal  
  Volume 13 Issue Pages 103  
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  Call Number Equine Behaviour @ team @ Serial 3051  
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Author Premack, D. url  openurl
  Title Animal Cognition Type Journal Article
  Year 1983 Publication Annual Review of Psychology Abbreviated Journal  
  Volume 34 Issue 1 Pages 351-362  
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  Call Number refbase @ user @ Serial 3535  
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Author Langlois, B.; Minkema, D.; Bruns, E. url  openurl
  Title Genetic problems in horse breeding Type Journal Article
  Year 1983 Publication Livestock Production Science Abbreviated Journal  
  Volume 10 Issue 1 Pages 69-81  
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  Abstract The purpose of this paper is to give a short survey of the present problems concerning the genetic improvement of horse breeds. The evolution of these populations in Europe, characterized by a deep change from production of draught horses towards that of leisure horses, is described and the influence of the demographical parameters on the selection of these horse populations, is discussed. The generation interval represents an important handicap only surmounted in the case of racing breeds where a high selection intensity can be practised since all animals are subjected to performance testing. In the other cases, the farmer usually does not use modern breeding techniques, but uses crosses instead, which lead more easily to visible results. The available selection criteria are also dealt with. A distinction is made between direct estimates evaluating the abilities of the animals in practice and the indirect estimates measuring a character in correlation to previous ones. For the former estimates, a distinction is made between those resulting from competitions (handicap, records or earnings) and those resulting from direct in-station measurements (saddle, jumping, dressage abilities, draught power). For the indirect estimates, often used especially for the selection of mares, the most important analysis is obviously that of the conformation. However, in the future early selection criteria according to more physiological data should be sought and developed. Estimation of the breeding value according to a given ability is thereafter pointed out. There are two situations: “the panmictic case” concerning sport and draught horses and “the non-panmictic case” corresponding to racing horses, which give rise to some problems. The setting up of breeding plans is discussed. Due to the different economic situations and various objectives of horse production, conclusions are drawn about the role played by geneticists in the present development of this sector.  
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  Call Number refbase @ user @ Serial 3967  
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Author Kiley-Worthington, M. openurl 
  Title Stereotypies in horses Type Journal Article
  Year 1983 Publication Equine Practice Abbreviated Journal  
  Volume 5 Issue Pages 34-40  
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  Notes Cited By (since 1996): 17; Export Date: 24 October 2008 Approved no  
  Call Number Admin @ knut @ Serial 4602  
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Author Baer, K.L.; Potter, G.D.; Friend, T.H.; Beaver, B.V. url  doi
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  Title Observation effects on learning in horses Type Journal Article
  Year 1983 Publication Applied Animal Ethology Abbreviated Journal Appl. Animal. Ethol.  
  Volume 11 Issue 2 Pages 123-129  
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  Abstract Sixteen horses, divided into 2 groups of 8, were used to study observational learning in horses. One group served as controls while the other group served as the treated group (observers). Observers were allowed to watch a correctly performed discrimination task for 5 days prior to testing their learning response using the same task. Discrimination testing was conducted on all horses daily for 14 days, with criterion set at 7 out of 8 responses correct with the last 5 consecutively correct. The maximum number of trials performed without reaching criterion was limited to 20 per day. Mean trials to criteria (MT) by group were: control, 11.25; observer, 10.70. Mean error (ME) scores were: control, 2.37; observer, 2.02. Average initial discrimination error scores were 11.13 for control and 10.38 for observers (P < 0.10). Asymptote was reached by Day 8 for both control and observer groups. Analysis of variance with repeated measures showed an extreme-day effect indicative of learning (P < 0.01), with non-significant differences in learning rate between experimental groups. Whether the initial ability of the horses to perform a discrimination learning task was enhanced by observation of other horses' performance of that task was not obvious from these data.  
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  Call Number refbase @ user @ Serial 726  
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Author Hinde, R.A. openurl 
  Title A conceptural framework Type Book Chapter
  Year 1983 Publication Primate Social Relationships Abbreviated Journal  
  Volume Issue Pages 1-7  
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  Publisher Sinauer, Sunderland Place of Publication Massechusetts Editor Hinde, R.A  
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  Call Number refbase @ user @ Serial 818  
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Author Boyd, R.; Silk, J.B. url  doi
openurl 
  Title A method for assigning cardinal dominance ranks Type Journal Article
  Year 1983 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 31 Issue 1 Pages 45-58  
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  Abstract Dominance hierarchies are widely described in nature. Commonly, an individual's ordinal rank is used as a measure of its position in the hierarchy, and, therefore its priority of access to resources. This use of ordinal ranks has several related drawbacks: (1) it is difficult to assess the magnitude or the significance of the difference in degree of dominance between two individuals; (2) it is difficult to evaluate the significance of differences between dominance matrices based on different behaviours or on the same behaviour at different times, and (3) it is difficult to use parametric statistical techniques to relate dominance rank to other quantities of interest. In this paper we describe a method for assigning cardinal dominance indices that does not suffer from these drawbacks. This technique is based on the Bradley-Terry model from the method of paired comparisons. We show how this model can be reinterpreted in terms of dominance interactions. and we describe a simple iterative technique for computing cardinal ranks. We then describe how to evaluate (1) whether the rank differences between individuals are significant, and (2) whether differences in the cardinal hierarchies based on different behaviours or the same behaviour at different times are significant. We then show how to generalize the method to deal with behaviours that sometimes have ambiguous outcomes, or behaviours for which the rank difference between a pair of individuals affects the rate of interaction between them.  
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  Call Number refbase @ user @ Serial 859  
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Author Becker C, openurl 
  Title Grevy's zebra of Smburu Keya: Mother-infant behavior Type Manuscript
  Year 1983 Publication Abbreviated Journal Yale Univ  
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  Corporate Author Thesis Master's thesis  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 926  
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Author Berger J, openurl 
  Title Predation, sex ratios, and male competition in equids Type Journal Article
  Year 1983 Publication Abbreviated Journal J Zool Lond  
  Volume 201 Issue Pages 205-216  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 939  
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