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| Author |
Peham, C.; Licka, T.; Schobesberger, H.; Meschan, E. |
| Title |
Influence of the rider on the variability of the equine gait |
Type  |
Journal Article |
| Year |
2004 |
Publication |
Human Movement Science |
Abbreviated Journal |
European Workshop on Movement Science |
| Volume |
23 |
Issue |
5 |
Pages |
663-671 |
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| Abstract |
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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| Author |
Straub, A. |
| Title |
An intelligent crow beats a lab |
Type |
Journal Article |
| Year |
2007 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
316 |
Issue |
5825 |
Pages |
688 |
| Keywords |
Animals; *Behavior, Animal; *Cognition; *Crows; Dogs; Intelligence; Memory |
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English |
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1095-9203 |
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| Notes |
PMID:17478698 |
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no |
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Equine Behaviour @ team @ |
Serial |
4102 |
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| Author |
Silk, J.B. |
| Title |
Social Components of Fitness in Primate Groups |
Type |
Journal Article |
| Year |
2007 |
Publication |
Science |
Abbreviated Journal |
Science |
| Volume |
317 |
Issue |
5843 |
Pages |
1347-1351 |
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There is much interest in the evolutionary forces that favored the evolution of large brains in the primate order. The social brain hypothesis posits that selection has favored larger brains and more complex cognitive capacities as a means to cope with the challenges of social life. The hypothesis is supported by evidence that shows that group size is linked to various measures of brain size. But it has not been clear how cognitive complexity confers fitness advantages on individuals. Research in the field and laboratory shows that sophisticated social cognition underlies social behavior in primate groups. Moreover, a growing body of evidence suggests that the quality of social relationships has measurable fitness consequences for individuals. |
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10.1126/science.1140734 |
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Equine Behaviour @ team @ |
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4239 |
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Pennisi, E. |
| Title |
PSYCHOLOGY: Nonhuman Primates Demonstrate Humanlike Reasoning |
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Journal Article |
| Year |
2007 |
Publication |
Science |
Abbreviated Journal |
Science |
| Volume |
317 |
Issue |
5843 |
Pages |
1308- |
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Equine Behaviour @ team @ |
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4240 |
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Wood, J.N.; Glynn, D.D.; Phillips, B.C.; Hauser, M.D. |
| Title |
The Perception of Rational, Goal-Directed Action in Nonhuman Primates |
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Journal Article |
| Year |
2007 |
Publication |
Science |
Abbreviated Journal |
Science |
| Volume |
317 |
Issue |
5843 |
Pages |
1402-1405 |
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Humans are capable of making inferences about other individuals' intentions and goals by evaluating their actions in relation to the constraints imposed by the environment. This capacity enables humans to go beyond the surface appearance of behavior to draw inferences about an individual's mental states. Presently unclear is whether this capacity is uniquely human or is shared with other animals. We show that cotton-top tamarins, rhesus macaques, and chimpanzees all make spontaneous inferences about a human experimenter's goal by attending to the environmental constraints that guide rational action. These findings rule out simple associative accounts of action perception and show that our capacity to infer rational, goal-directed action likely arose at least as far back as the New World monkeys, some 40 million years ago. |
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Equine Behaviour @ team @ |
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4241 |
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Dunbar, R.I.M.; Shultz, S. |
| Title |
Evolution in the Social Brain |
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Journal Article |
| Year |
2007 |
Publication |
Science |
Abbreviated Journal |
Science |
| Volume |
317 |
Issue |
5843 |
Pages |
1344-1347 |
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The evolution of unusually large brains in some groups of animals, notably primates, has long been a puzzle. Although early explanations tended to emphasize the brain's role in sensory or technical competence (foraging skills, innovations, and way-finding), the balance of evidence now clearly favors the suggestion that it was the computational demands of living in large, complex societies that selected for large brains. However, recent analyses suggest that it may have been the particular demands of the more intense forms of pairbonding that was the critical factor that triggered this evolutionary development. This may explain why primate sociality seems to be so different from that found in most other birds and mammals: Primate sociality is based on bonded relationships of a kind that are found only in pairbonds in other taxa. |
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Equine Behaviour @ team @ |
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4243 |
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Herrmann, E.; Call, J.; Hernandez-Lloreda, M.V.; Hare, B.; Tomasello, M. |
| Title |
online material |
Type |
Journal Article |
| Year |
2007 |
Publication |
Science |
Abbreviated Journal |
Science |
| Volume |
317 |
Issue |
5843 |
Pages |
1360-1366 |
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Humans have many cognitive skills not possessed by their nearest primate relatives. The cultural intelligence hypothesis argues that this is mainly due to a species-specific set of social-cognitive skills, emerging early in ontogeny, for participating and exchanging knowledge in cultural groups. We tested this hypothesis by giving a comprehensive battery of cognitive tests to large numbers of two of humans' closest primate relatives, chimpanzees and orangutans, as well as to 2.5-year-old human children before literacy and schooling. Supporting the cultural intelligence hypothesis and contradicting the hypothesis that humans simply have more “general intelligence,” we found that the children and chimpanzees had very similar cognitive skills for dealing with the physical world but that the children had more sophisticated cognitive skills than either of the ape species for dealing with the social world. |
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Equine Behaviour @ team @ |
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4244 |
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| Author |
Ash, C.; Chin, G.; Pennisi, E.; Sugden, A. |
| Title |
Living in Societies |
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Journal Article |
| Year |
2007 |
Publication |
Science |
Abbreviated Journal |
Science |
| Volume |
317 |
Issue |
5843 |
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1337- |
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Equine Behaviour @ team @ |
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4246 |
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Herrmann, E.; Call, J.; Hernandez-Lloreda, M.V.; Hare, B.; Tomasello, M. |
| Title |
Humans Have Evolved Specialized Skills of Social Cognition: The Cultural Intelligence Hypothesis |
Type |
Journal Article |
| Year |
2007 |
Publication |
Science |
Abbreviated Journal |
Science |
| Volume |
317 |
Issue |
5843 |
Pages |
1360-1366 |
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| Abstract |
Humans have many cognitive skills not possessed by their nearest primate relatives. The cultural intelligence hypothesis argues that this is mainly due to a species-specific set of social-cognitive skills, emerging early in ontogeny, for participating and exchanging knowledge in cultural groups. We tested this hypothesis by giving a comprehensive battery of cognitive tests to large numbers of two of humans' closest primate relatives, chimpanzees and orangutans, as well as to 2.5-year-old human children before literacy and schooling. Supporting the cultural intelligence hypothesis and contradicting the hypothesis that humans simply have more “general intelligence,” we found that the children and chimpanzees had very similar cognitive skills for dealing with the physical world but that the children had more sophisticated cognitive skills than either of the ape species for dealing with the social world. |
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10.1126/science.1146282 |
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Equine Behaviour @ team @ |
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4245 |
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| Author |
Jolly, A. |
| Title |
BEHAVIOR: The Social Origin of Mind |
Type |
Journal Article |
| Year |
2007 |
Publication |
Science |
Abbreviated Journal |
Science |
| Volume |
317 |
Issue |
5843 |
Pages |
1326-1327 |
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Equine Behaviour @ team @ |
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4247 |
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