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Author |
Lansade, L.; Bouissou, M.-F. |
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Title |
Reactivity to humans: A temperament trait of horses which is stable across time and situations |
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Journal Article |
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2008 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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114 |
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3-4 |
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492-508 |
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Horse; Equus caballus; Reactivity to humans; Temperament trait; Personality; Behavioural consistency |
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The aim of this study was to test the existence of a “reactivity-to-humans” trait which is stable over time and across situations. For this purpose, four test situations were repeated on the same animals at 8 months, 1.5 years (N = 110 horses) and 2.5 years of age (N = 54 horses). These situations involved a “familiar passive human test” during which a familiar person stayed motionless in the test pen, a “familiar active human test” and an “unfamiliar active human test” during which a familiar or unfamiliar person attempted to touch the horse, and a “halter-fitting and heart-rate measurement test”, during which the horse was haltered and equipped with a surcingle and then had its heart-rate measured. Many behavioural variables were recorded during the tests, and correlations between ages and variables measured during other situations were investigated. When correlations were found, we concluded that the variables corresponded to temperament traits which are stable over time and across situations. The horses tested were divided into four groups according to breed (Anglo-Arab and Welsh) and year of birth (2001 and 2002). Data for each group were analysed separately with Spearman rank correlations. Regarding stability over time, there was a strong correlation between ages in the frequency of licking/nibbling the passive human, the time taken by a familiar or unfamiliar person to touch the horse, and the time taken to fit a halter (e.g. the time taken to touch the horse's muzzle was significantly correlated between ages in 7 out of the 8 possible cases: 0.40 <= R <= 0.67). Regarding stability across situations, results indicate that the more frequently a horse sniffed, licked or nibbled a passive human, the easier it was for either a familiar or unfamiliar active human to touch and halter it. Moreover, a horse which could be touched easily by a familiar human could also be touched and haltered easily by an unfamiliar human. These behaviours, which are linked directly to humans, therefore indicate good stability over time and across situations. In conclusion, this stability suggests the existence of a “reactivity-to-humans” temperament trait, whether the human is passive or active, familiar or unfamiliar. When the animals do not have frequent contact with humans, this reactivity is stable over time and can be measured as early as 8 months of age using the behavioural variables cited above. |
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0168-1591 |
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Equine Behaviour @ team @ |
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4710 |
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Emery, N.J.; Seed, A.M.; von Bayern, A.M.P.; Clayton, N.S. |
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Title |
Cognitive adaptations of social bonding in birds |
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Journal Article |
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Year |
2007 |
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Philosophical Transactions of the Royal Society B: Biological Sciences |
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Phil. Trans. Biol. Sci. |
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362 |
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1480 |
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489-505 |
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The “social intelligence hypothesis” was originally conceived to explain how primates may have evolved their superior intellect and large brains when compared with other animals. Although some birds such as corvids may be intellectually comparable to apes, the same relationship between sociality and brain size seen in primates has not been found for birds, possibly suggesting a role for other non-social factors. But bird sociality is different from primate sociality. Most monkeys and apes form stable groups, whereas most birds are monogamous, and only form large flocks outside of the breeding season. Some birds form lifelong pair bonds and these species tend to have the largest brains relative to body size. Some of these species are known for their intellectual abilities (e.g. corvids and parrots), while others are not (e.g. geese and albatrosses). Although socio-ecological factors may explain some of the differences in brain size and intelligence between corvids/parrots and geese/albatrosses, we predict that the type and quality of the bonded relationship is also critical. Indeed, we present empirical evidence that rook and jackdaw partnerships resemble primate and dolphin alliances. Although social interactions within a pair may seem simple on the surface, we argue that cognition may play an important role in the maintenance of long-term relationships, something we name as “relationship intelligence”. |
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refbase @ user @ |
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3528 |
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Galef, B.G.; Laland, K.N. |
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Title |
Social Learning in Animals: Empirical Studies and Theoretical Models |
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2005 |
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BioScience |
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55 |
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6 |
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489-499 |
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AbstractThe last two decades have seen a virtual explosion in empirical research on the role of social interactions in the development of animals' behavioral repertoires, and a similar increase in attention to formal models of social learning. Here we first review recent empirical evidence of social influences on food choice, tool use, patterns of movement, predator avoidance, mate choice, and courtship, and then consider formal models of when animals choose to copy behavior, and which other animals' behavior they copy, together with empirical tests of predictions from those models. |
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0006-3568 |
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10.1641/0006-3568(2005)055[0489:Sliaes]2.0.Co;2 |
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Equine Behaviour @ team @ |
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6398 |
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Josep Call; Brian Hare; Malinda Carpenter; Michael Tomasello |
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Title |
`Unwilling' versus `unable': chimpanzees' understanding of human intentional action |
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2004 |
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Developmental Science |
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7 |
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488-498 |
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refbase @ user @ |
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3517 |
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Danchin, E.; Giraldeau, L.-A.; Valone, T.J.; Wagner, R.H. |
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Title |
Public information: from nosy neighbors to cultural evolution |
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Journal Article |
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Year |
2004 |
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Science (New York, N.Y.) |
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Science |
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305 |
Issue |
5683 |
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487-491 |
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Animals; *Behavior, Animal; Cues; *Cultural Evolution; *Decision Making; Environment; Evolution; Feeding Behavior; Female; Genes; Humans; Male; Reproduction; Sexual Behavior, Animal |
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Psychologists, economists, and advertising moguls have long known that human decision-making is strongly influenced by the behavior of others. A rapidly accumulating body of evidence suggests that the same is true in animals. Individuals can use information arising from cues inadvertently produced by the behavior of other individuals with similar requirements. Many of these cues provide public information about the quality of alternatives. The use of public information is taxonomically widespread and can enhance fitness. Public information can lead to cultural evolution, which we suggest may then affect biological evolution. |
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U.P.M.C. CNRS-UMR7625, Bat A-7e etage-Case 237, 7 quai Saint Bernard, 75252 Paris Cedex 05, France. edanchin@snv.jussieu.fr |
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English |
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1095-9203 |
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PMID:15273386 |
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2131 |
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Markman, E.M.; Abelev, M. |
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Title |
Word learning in dogs? |
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Journal Article |
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2004 |
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Trends in Cognitive Sciences |
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Trends. Cognit. Sci. |
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8 |
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11 |
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479-81; discussion 481 |
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Animals; Association Learning; Dogs; *Learning; *Verbal Learning; *Vocabulary |
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In a recent paper, Kaminski, Call and Fischer report pioneering research on word-learning in a dog. In this commentary we suggest ways of distinguishing referential word use from mere association. We question whether the dog is reasoning by exclusion and, if so, compare three explanations – learned heuristics, default assumptions, and pragmatic reasoning – as they apply to children and might apply to dogs. Kaminski et al.'s work clearly raises important questions about the origins and basis of word learning and social cognition. |
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Department of Psychology, Stanford University, Bldg 420, Stanford, CA 94305-2130, USA |
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1364-6613 |
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PMID:15491899 |
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refbase @ user @ |
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274 |
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Redbo, I.; Redbo-Torstensson, P.; Ödberg, F.O.; Hedendahl, A.; Holm, J. |
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Title |
Factors affecting behavioural disturbances in race-horses |
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1998 |
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Animal Science |
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66 |
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2 |
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475-481 |
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Cited By (since 1996): 30; Export Date: 21 October 2008 |
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Equine Behaviour @ team @ |
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4541 |
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Clayton NS; Dickinson A |
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Rational rats |
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2006 |
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Science |
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Science |
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9 |
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472 |
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Equine Behaviour @ team @ |
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Bruns, E. |
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Estimation of the breeding value of stallions from the tournament performance of their offspring |
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1981 |
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Livestock Production Science |
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8 |
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5 |
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465-473 |
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Data from horse-riding competitions recorded in Germany in 1976 and 1977 have been analysed to estimate genetic parameters for performance traits of riding horses measured in dressage, jumping competitions and trials. The performance traits analysed were logarithmic earnings per start, relative place number, and place value. The results are the following. 1. (1) Heritability and repeatability estimates for performance in dressage shows are 0.2 and 0.4 respectively. Corresponding estimates for performance in jumping competitions are 20% less. No genetic differences are found between stallions for performance in trials.2. (2) A selection index for estimating the breeding value of stallions was constructed by using the repeated performances of their offspring in dressage and jumping shows. For this purpose, performance data for at least ten progeny should be available. The correlation between the breeding values estimated from the dressage and jumping performances of the same stallions was approximately zero.3. (3) Reliable progeny-testing requires that the assumptions of mating stallions at random, selecting progeny randomly, and distributing them equally across environmental effects be fulfilled.4. (4) The genetic use of breeding values of stallions estimated from the performance of their progeny is opposed by the prolongation of the generation interval. This can be partly overcome by sampling young stallions and making use of the test results for young progeny only. |
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3968 |
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Itakura, S.; Agnetta, B.; Hare, B.; Tomasello, M. |
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Chimpanzee Use of Human and Conspecific Social Cues to Locate Hidden Food |
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2001 |
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Developmental Science |
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Dev Sci |
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2 |
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2 |
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448 - 456 |
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Two studies are reported in which chimpanzees attempted to use social cues to locate hidden food in one of two possible hiding places. In the first study four chimpanzees were exposed to a local enhancement cue (the informant approached and looked to the location where food was hidden and then remained beside it) and a gaze/point cue (the informant gazed and manually pointed towards the location where the food was hidden). Each cue was given by both a human informant and a chimpanzee informant. In the second study 12 chimpanzees were exposed to a gaze direction cue in combination with a vocal cue (the human informant gazed to the hiding location and produced one of two different vocalizations – a 'food-bark' or a human word-form). The results were – (i) all subjects were quite skillful with the local enhancement cue, no matter who produced it; (ii) few subjects were skillful with the gaze/point cue, no matter who produced it (most of these being individuals who had been raised in infancy by humans); and (iii) most subjects were skillful when the human gazed and vocalized at the hiding place, with little difference between the two types of vocal cue. Findings are discussed in terms of chimpanzees' apparent need for additional cues, over and above gaze direction cues, to indicate the presence of food. |
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Department of Psychology and Yerkes Regional Primate Research Center, Emory University, USA DOI – 10.1111/1467-7687.00089 |
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Blackwell Publishers Ltd. 1999 |
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Equine Behaviour @ team @ |
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4973 |
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