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Author |
FRASER AF et al, |
Title |
An exploratory ultrasonic study on quntitative foetal kinesis in the horse |
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Journal Article |
Year |
1975 |
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Abbreviated Journal |
Appl Anim Ethol |
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1 |
Issue |
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Pages |
395-404 |
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from Professor Hans Klingels Equine Reference List |
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Serial |
1093 |
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Author |
Briand Petersen, J.C. |
Title |
An identification system for zebra (Equus burchelli, Gray). |
Type |
Journal Article |
Year |
1972 |
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Abbreviated Journal |
E. Afr. Wildl. J. |
Volume |
10 |
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Pages |
59-63 |
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Equine Behaviour @ team @ |
Serial |
2250 |
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Author |
de Vries, H. |
Title |
An improved test of linearity in dominance hierarchies containing unknown or tied relationships |
Type |
Journal Article |
Year |
1995 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
Volume |
50 |
Issue |
5 |
Pages |
1375-1389 |
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Abstract |
Appleby (1983, Anim. Behav., 31, 600-608) described a statistical test, based on the work of Kendall (1962, Rank Correlation Methods), for the significance of linearity in dominance hierarchies. He suggested that unknown relationships should be assigned the value 1/2 and that subsequently the same test procedure can be used. In this paper it is shown that incorrect results are obtained by this method whenever there are unknown relationships. Values of the linearity index are systematically too low. P-values can be too high (underestimating the significance) or too low (overestimating), and seem to differ by not much more than a factor two (respectively a half) from the correct P-value. An improved method is developed for testing linearity in a set of dominance relationships containing unknown relationships. Furthermore, it is argued that, if one admits the possibility of tied dominance relationships, which should indeed be assigned the value 1/2, Landau's linearity index is to be preferred to Kendall's index. A randomization test is developed for assessing the significance of linearity or non-linearity in a set of dominance relationships containing unknown or tied relationships. The test statistic employed in this testing procedure is based on Landau's linearity index, but takes the unknown and tied relationships into account. |
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Equine Behaviour @ team @ |
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4284 |
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Author |
Petersen Jcb, |
Title |
An indentification system for zebra (Equus burchelli, Gray) |
Type |
Journal Article |
Year |
1972 |
Publication |
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Abbreviated Journal |
E Afr Wildl J |
Volume |
10 |
Issue |
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Pages |
59-64 |
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from Professor Hans Klingels Equine Reference List |
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1467 |
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Author |
Weaver, A.; de Waal, F.B.M. |
Title |
An index of relationship quality based on attachment theory |
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Journal Article |
Year |
2002 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
Volume |
116 |
Issue |
1 |
Pages |
93-106 |
Keywords |
Analysis of Variance; Animals; *Behavior, Animal; Female; Male; *Maternal Behavior; *Object Attachment; Pan troglodytes/*psychology; Pilot Projects |
Abstract |
Two measures are reported of the nature or quality of a mother-offspring (MO) relationship during development using brown capuchin monkeys (Cebus apella) as models. One is a qualitative classification of MO relationships as secure, resistant, or avoidant attachments. The other is an empirical ratio of relative affiliation to agonism called the MO relationship quality, or MORQ, Index. The two methods tapped similar relationship features so relationships high or low of a median split of MORQ values were heuristically labeled secure (n = 22) or insecure (n = 16), respectively. A comparison revealed extensive behavioral differences between secure and insecure MO relationships and suggested MORQ provided an objective, continuous measure of attachment security. |
Address |
Yerkes Regional Primate Research Center, Emory University, USA. achweaver@att.net |
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0735-7036 |
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PMID:11930937 |
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refbase @ user @ |
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183 |
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Author |
C. K. Hemelrijk, |
Title |
An individual-orientated model of the emergence of despotic and egalitarian societies |
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Journal Article |
Year |
1999 |
Publication |
Proceedings of the Royal Society B: Biological Sciences |
Abbreviated Journal |
Proc. Roy. Soc. Lond. B Biol. Sci. |
Volume |
266 |
Issue |
1417 |
Pages |
361-361 |
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Abstract |
Single behavioural differences between egalitarian and despotic animal societies are often assumed to reflect specific adaptations. However, in the present paper, I will show in an individual-orientated model, how many behavioural traits of egalitarian and despotic virtual societies arise as emergent characteristics. The artificial entities live in a homogeneous world and only aggregate, and upon meeting one another and may perform dominance interactions in which the effects of winning and losing are self-reinforcing. The behaviour of these entities is studied in a similar way to that of real animals. It will be shown that by varying the intensity of aggression only, one may switch from egalitarian to despotic virtual societies. Differences between the two types of society appear to correspond closely to those between despotic and egalitarian macaque species in the real world. In addition, artificial despotic societies show a clearer spatial centrality of dominants and, counter-intuitively, more rank overlap between the sexes than the egalitarian ones. Because of the correspondence with patterns in real animals, the model makes it worthwhile comparing despotic and egalitarian species for socio-spatial structure and rank overlap too. Furthermore, it presents us with parsimonious hypotheses which can be tested in real animals for patterns of aggression, spatial structure and the distribution of social positive and sexual behaviour. |
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refbase @ user @ |
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862 |
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Author |
Okamoto, S.; Tomonaga, M.; Ishii, K.; Kawai, N.; Tanaka, M.; Matsuzawa, T. |
Title |
An infant chimpanzee (Pan troglodytes) follows human gaze |
Type |
Journal Article |
Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
5 |
Issue |
2 |
Pages |
107-114 |
Keywords |
Animals; Animals, Newborn/*psychology; Attention; *Cognition; Conditioning, Operant; Male; Pan troglodytes/*psychology; *Social Behavior; *Visual Perception |
Abstract |
The ability of non-human primates to follow the gaze of other individuals has recently received much attention in comparative cognition. The aim of the present study was to investigate the emergence of this ability in a chimpanzee infant. The infant was trained to look at one of two objects, which an experimenter indicated by one of four different cue conditions: (1) tapping on the target object with a finger; (2) pointing to the target object with a finger; (3) gazing at the target object with head orientation; or (4) glancing at the target object without head orientation. The subject was given food rewards independently of its responses under the first three conditions, so that its responses to the objects were not influenced by the rewards. The glancing condition was tested occasionally, without any reinforcement. By the age of 13 months, the subject showed reliable following responses to the object that was indicated by the various cues, including glancing alone. Furthermore, additional tests clearly showed that the subject's performance was controlled by the “social” properties of the experimenter-given cues but not by the non-social, local-enhancing peripheral properties. |
Address |
Department of Psychology, School of Letters, Nagoya University, Nagoya, Aichi 464-8601, Japan. sokamot@yahoo.co.jp |
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1435-9448 |
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PMID:12150035 |
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Equine Behaviour @ team @ |
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2609 |
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Author |
Straub, A. |
Title |
An intelligent crow beats a lab |
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Journal Article |
Year |
2007 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
Volume |
316 |
Issue |
5825 |
Pages |
688 |
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Animals; *Behavior, Animal; *Cognition; *Crows; Dogs; Intelligence; Memory |
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1095-9203 |
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PMID:17478698 |
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Equine Behaviour @ team @ |
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4102 |
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Author |
Ödberg, F.O. |
Title |
An interpretation of pawing by the horse (Equus caballus Linnaeus), displacement activity and original functions |
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Journal Article |
Year |
1973 |
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Säuget. Mitt. |
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21 |
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1 |
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1-12 |
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Cited By (since 1996): 6; Export Date: 21 October 2008 |
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Equine Behaviour @ team @ |
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4536 |
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Author |
Ödberg Fo, |
Title |
An interpretation of pawing by the horse, displacement activity and original functions |
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1973 |
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Säugetierk Mitt |
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21 |
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1-12 |
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from Professor Hans Klingels Equine Reference List |
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no |
Call Number |
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1426 |
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