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Author |
McBride, S.D.; Wolf, B. |
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Title |
Using multivariate statistical analysis to measure ovine temperament; stability of factor construction over time and between groups of animals |
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2007 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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103 |
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1-2 |
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45-58 |
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Arena test; Factor analysis; Temperament; Sheep |
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The ovine arena test in conjunction with multivariate statistical analysis (factor analysis) may be a means of measuring ovine temperament for practical purposes. Stability of factor construction over time and between groups of animals is considered to demonstrate trait consistency and is, therefore, one of the first steps in validating a temperament/personality test from this perspective. The aim of this study, therefore, was to assess the stability of factor construction, as a measure of trait consistency, using arena test data from three groups of animals with one group (Group 1) tested repeatedly over three rounds (twice at 8 months and once at 22 months of age). Group 1 consisted of 193 mule (Bluefaced Leicester Sire x Scottish Blackface/Welsh Speckled Face dam), ewe lambs (8 months old). Groups 2 and 3 consisted of 189 and 185 mules, respectively (14 months old). All animals were tested for 6 min in a 13 m x 3 m arena. Factor analysis (varimax rotation) was performed twice on the behavioural data (latency to bleat, total number of vocalisations, distance travelled, time spent in different areas of the arena and number of times crossing in and out of pertinent areas), initially using all data recorded on a per minute basis (`Per Minute') for all 6 min of the test (10 factors extracted) and then using total values (`Total'), the summation of the 6 min for each behaviour measured (4 factors extracted). Stability of factor loadings between rounds and between groups was tested using Kendall's coefficient of concordance. For the `Per Minute' data, 5 out of the 10 factors showed significant (p < 0.05) concordance between rounds whilst 9 out of 10 factors showed significant (p < 0.05) concordance between groups. All four factors generated from the `Total' data demonstrated significant (p < 0.05) concordance between rounds and between groups. The four factors generated from the `Total' data were considered to be of potential merit for future studies. These factors were named--`conspecific motivation-fear', `conspecific motivation-distress', `activity' and `low conspecific motivation'. |
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295 |
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Author |
Koski, S.E.; Sterck, E.H.M. |
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Title |
Triadic postconflict affiliation in captive chimpanzees: does consolation console? |
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Year |
2007 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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73 |
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1 |
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133-142 |
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chimpanzee; consolation; Pan troglodytes; postconflict affiliation |
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Consolation is a triadic postconflict interaction between a conflict participant and an uninvolved third party. The term consolation implies stress alleviation. Consequently, consolation may be an effective mechanism to alleviate postconflict stress. However, this assumption has not been tested. We tested whether consolation alleviates postconflict stress in captive chimpanzees, Pan troglodytes. In addition, we examined whether consolation is a substitute postconflict interaction for reconciliation. We collected 643 postconflict-matched control pairs on aggressees and 576 on aggressors. Consolation occurred equally frequently with aggressees and aggressors. However, we found no evidence that consolation alleviated stress, regardless of the identity of the consoler. In addition, consolation was also directed to conflict participants with no evident postconflict stress. Furthermore, we found no evidence for consolation being a substitute for reconciliation. The occurrence of consolation did not depend on the occurrence of reconciliation and consolation was not more prevalent with the sex class that reconciled less often or had the highest postconflict stress levels. We conclude that consolation is a postconflict interaction in its own right, the function of which is not likely to be connected to stress alleviation of the consoled individual. We propose that the function of triadic postconflict affiliation, previously labelled as consolation, should be reassessed with regard to the third parties' reasons to affiliate with conflict opponents. |
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306 |
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Wittemyer, G.; Getz, W.M. |
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Hierarchical dominance structure and social organization in African elephants, Loxodonta africana |
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2007 |
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Animal Behaviour. |
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Anim. Behav. |
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73 |
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4 |
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671-681 |
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African elephant; between-group competition; Loxodonta africana; nepotism; resource distribution; socioecology; transitive dominance; within-group competition |
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According to the socioecological framework, transitivity (or linearity) in dominance relationships is related to competition over critical resources. When a population is structured into groups, the intensity of between- versus within-group competition influences the form and function of its social organization. Few studies have compared the type and relative intensity of competition at these two levels. African elephants have well-structured social relations, providing an exemplary system for such a study. We report on dominance hierarchies among free-ranging elephants and evaluate the factors that drive their socioecological structure to lie in a region of the three-dimensional nepotism/despotism/tolerance space rarely observed among social species; namely, where non-nepotistic, transitive dominance hierarchies within groups emerge despite kin-based philopatry and infrequent agonistic interactions over widely distributed resources. We found significant transitivity in dominance hierarchies between groups. Dominance relations among the matriarchs of different social groups were primarily age based, rather than driven by physical or group size, and group matriarch rank influenced the dominance relationships among nonmatriarchal females in the population. Our results suggest that between-group dominance relationships induce tolerance among group members, which in combination with high group relatedness, reduces the benefits of nepotism. We postulate that cognitive abilities and high risk of injury in contests enhance winner and loser effects, facilitating the formation of transitive dominance relationships, despite widely distributed resources over which infrequent competition occurs. The interplay of cognitive abilities, winner and loser effects, resource distribution, and within- and between-group dominance relationships may produce behaviour in other strongly social mammals that differs from that predicted by a superficial application of current socioecological models. |
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449 |
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Hall, C. |
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Title |
The impact of visual perception on equine learning |
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2007 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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76 |
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29-33 |
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619 |
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Ninomiya, S. |
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Title |
Social leaning and stereotypy in horses |
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Year |
2007 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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76 |
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22-23 |
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620 |
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Leblanc, M.-A.; Duncan, P. |
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Can studies of cognitive abilities and of life in the wild really help us to understand equine learning? |
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2007 |
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Behavioural Processes |
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Behav. Process. |
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76 |
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49-52 |
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621 |
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Author |
McCall, C.A. |
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Title |
Making equine learning research applicable to training procedures |
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2007 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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76 |
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1 |
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27-28 |
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623 |
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Author |
Sigurjónsdóttir , H. |
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Equine learning behaviour: The importance of evolutionary and ecological approach in research |
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2007 |
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Behavioural Processes |
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Behav. Process. |
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76 |
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40-42 |
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624 |
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Krueger, K.; Flauger, B. |
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Social learning in horses from a novel perspective |
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2007 |
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Behavioural Processes |
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Behav. Process. |
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76 |
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37-39 |
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625 |
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Author |
Heitor, F.; Vicente, L. |
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Title |
Learning about horses: What is equine learning all about? |
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2007 |
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Behavioural Processes |
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Behav. Process. |
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76 |
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34-36 |
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627 |
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