| Records |
| Author |
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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| 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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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 |
Pages |
1337- |
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Equine Behaviour @ team @ |
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4246 |
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| Author |
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 |
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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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| Author |
Rapin, V.; Poncet, P.A.; Burger, D.; Mermod, C.; Richard, M.A. |
| Title |
[Measurement of the attention time in the horse] |
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Journal Article |
| Year |
2007 |
Publication |
Schweizer Archiv fur Tierheilkunde |
Abbreviated Journal |
Schweiz Arch Tierheilkd |
| Volume |
149 |
Issue |
2 |
Pages |
77-83 |
| Keywords |
Age Factors; Animals; *Attention/physiology; Conditioning, Operant; Cross-Over Studies; Female; Horses/*physiology; Learning/*physiology; Male; Memory/*physiology; Time Factors |
| Abstract |
A study carried out on 49 horses showed that it is possible to measure the attention time by operant conditioning. After teaching horses an instrumental task using a signal, we were then able to test their attention time by asking them to prolong it increasingly while setting success and failure criteria. Two tests were performed 3 weeks apart. The 2nd test was feasible without relearning, a proof of memory, and was repeatable, a proof of consistency in the attention time. A significant difference was observed between the 3 age groups. Young horses often performed very well during the 1st test but their attention dropped in the 2nd test while older horses were more stable with respect to attention and even increased it slightly. The study shows that there are individual differences but it was not possible to prove a significant influence of breed, gender and paternal influence. Consequently, learning appears to be one of the most interesting approaches for evaluating the attention of horses and for observing their behaviour. |
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Laboratoire d'Ecoethologie, Universite de Neuchatel, Suisse. veronique.rapin@unine.ch |
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French |
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Mesure de la duree d'attention chez le cheval |
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0036-7281 |
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PMID:17343134 |
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no |
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1770 |
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Carlsson, H.-E.; Lyberg, K.; Royo, F.; Hau, J. |
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Quantification of stress sensitive markers in single fecal samples do not accurately predict excretion of these in the pig |
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Journal Article |
| Year |
2007 |
Publication |
Research in Veterinary Science |
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| Volume |
82 |
Issue |
3 |
Pages |
423-428 |
| Keywords |
Cortisol; Immunoglobulin A; Stress; Pigs; Feces; Animal welfare |
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All feces produced during 24 h were collected from five pigs and cortisol and immunoreactive cortisol metabolites (CICM), and IgA were quantified. Within pigs, the concentrations of CICM and IgA varied extensively between random samples obtained from a single fecal dropping, and deviated in most cases significantly from the true concentration measured in total fecal output (CV 6.7–130%). The CICM and IgA contents varied considerably (CV 8.1–114%) within and between individual fecal droppings from the same pig compared to the total fecal excretion. In conclusion, single random samples could not be used to reliably quantify the total fecal concentration or excretion of CICM or IgA in pigs. Analyses of all feces collected during shorter periods than 24 h did not provide an accurate estimate of the daily excretion of CICM. Thus, the concentration of stress sensitive molecules in random single fecal samples as an indicator of animal welfare should be interpreted with prudence. |
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0034-5288 |
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no |
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Equine Behaviour @ team @ |
Serial |
5853 |
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| Author |
Lee, C.M.; Ryan, J.J.; Kreiner, D.S. |
| Title |
Personality in domestic cats |
Type |
Journal Article |
| Year |
2007 |
Publication |
Psychological Reports |
Abbreviated Journal |
Psychol Rep |
| Volume |
100 |
Issue |
1 |
Pages |
27-29 |
| Keywords |
Animals; Animals, Domestic/*psychology; *Behavior, Animal; Cats/*psychology; Humans; *Personality |
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Personality ratings of 196 cats were made by their owners using a 5-point Likert scale anchored by 1: not at all and 5: a great deal with 12 items: timid, friendly, curious, sociable, obedient, clever, protective, active, independent, aggressive, bad-tempered, and emotional. A principal components analysis with varimax rotation identified three intepretable components. Component I had high loadings by active, clever, curious, and sociable. Component II had high loadings by emotional, friendly, and protective, Component III by aggressive and bad-tempered, and Component IV by timid. Sex was not associated with any component, but age showed a weak negative correlation with Component I. Older animals were rated less social and curious than younger animals. |
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Department of Psychology, 1111 Lovinger, Central Missouri State University, Warrensburg, MO 64093, USA |
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English |
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0033-2941 |
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PMID:17450998 |
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no |
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Equine Behaviour @ team @ |
Serial |
4103 |
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Bonnie, K.E.; Horner, V.; Whiten, A.; de Waal, F.B.M. |
| Title |
Spread of arbitrary conventions among chimpanzees: a controlled experiment |
Type |
Journal Article |
| Year |
2007 |
Publication |
Proceedings. Biological sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
| Volume |
274 |
Issue |
1608 |
Pages |
367-372 |
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| Abstract |
Wild chimpanzees (Pan troglodytes) have a rich cultural repertoire--traditions common in some communities are not present in others. The majority of reports describe functional, material traditions, such as tool use. Arbitrary conventions have received far less attention. In the same way that observations of material culture in wild apes led to experiments to confirm social transmission and identify underlying learning mechanisms, experiments investigating how arbitrary habits or conventions arise and spread within a group are also required. The few relevant experimental studies reported thus far have relied on cross-species (i.e. human-ape) interaction offering limited ecological validity, and no study has successfully generated a tradition not involving tool use in an established group. We seeded one of two rewarded alternative endpoints to a complex sequence of behaviour in each of two chimpanzee groups. Each sequence spread in the group in which it was seeded, with many individuals unambiguously adopting the sequence demonstrated by a group member. In one group, the alternative sequence was discovered by a low ranking female, but was not learned by others. Since the action-sequences lacked meaning before the experiment and had no logical connection with reward, chimpanzees must have extracted both the form and benefits of these sequences through observation of others. |
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Living Links, Yerkes National Primate Research Center, Atlanta, GA 30329, USA. kebonni@emory.edu |
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0962-8452 |
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PMID:17164200 |
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no |
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refbase @ user @ |
Serial |
157 |
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Wittig, R.M.; Crockford, C.; Wikberg, E.; Seyfarth, R.M.; Cheney, D.L. |
| Title |
Kin-mediated reconciliation substitutes for direct reconciliation in female baboons |
Type |
Journal Article |
| Year |
2007 |
Publication |
Proceedings. Biological sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
| Volume |
274 |
Issue |
1613 |
Pages |
1109-1115 |
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It has been hypothesized that group-living mammals engage in reconciliation (post-conflict affiliation between former opponents) to reduce the disruptive costs of aggression and restore opponents' tolerance to baseline levels. Recipients of aggression are sometimes reluctant to tolerate the proximity of a recent opponent, however, in apparent fear that aggression will be renewed. In such cases, reconciliatory behaviour by the aggressor's close kin may substitute for direct reconciliation. We describe a playback experiment with free-ranging baboons (Papio hamadryas ursinus) that examines whether friendly behaviour by the aggressor's kin can substitute for direct reconciliation by the aggressor herself. In the test condition, female subjects who had recently been threatened heard the friendly grunt of one of their aggressor's relatives, mimicking kin-mediated vocal reconciliation. In the control condition, subjects heard the grunt of a dominant female from a different matriline. Subjects responded significantly more strongly in test than in control trials. Moreover, in the next hour they were significantly more likely to tolerate the proximity of both their aggressor and the relative whose grunt they had heard. In contrast, subjects' behaviour towards both control females and other members of their aggressor's matriline was unaffected. We conclude that kin-mediated vocal reconciliation can substitute for direct reconciliation in baboons. |
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Department of Biology, University of Pennsylvania, Philadelphia, PA 19104-6018, USA |
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0962-8452 |
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PMID:17301022 |
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no |
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refbase @ user @ |
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342 |
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Arlettaz, R.; Patthey, P.; Baltic, M.; Leu, T.; Schaub, M.; Palme, R.; Jenni-Eiermann, S. |
| Title |
Spreading free-riding snow sports represent a novel serious threat for wildlife |
Type |
Journal Article |
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2007 |
Publication |
Proceedings. Biological Sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
| Volume |
274 |
Issue |
1614 |
Pages |
1219-1224 |
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| Abstract |
Stress generated by humans on wildlife by continuous development of outdoor recreational activities is of increasing concern for biodiversity conservation. Human disturbance often adds to other negative impact factors affecting the dynamics of vulnerable populations. It is not known to which extent the rapidly spreading free-riding snow sports actually elicit detrimental stress (allostatic overload) upon wildlife, nor what the potential associated fitness and survival costs are. Using a non-invasive technique, we evaluated the physiological stress response induced by free-riding snow sports on a declining bird species of Alpine ecosystems. The results of a field experiment in which radiomonitored black grouse (Tetrao tetrix) were actively flushed from their snow burrows once a day during four consecutive days showed an increase in the concentration of faecal stress hormone (corticosterone) metabolites after disturbance. A large-scale comparative analysis across the southwestern Swiss Alps indicated that birds had higher levels of these metabolites in human-disturbed versus undisturbed habitats. Disturbance by snow sport free-riders appears to elevate stress, which potentially represents a new serious threat for wildlife. The fitness and survival costs of allostatic adjustments have yet to be estimated. |
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Zoological Institute, Division of Conservation Biology, University of Bern, Baltzerstrasse 6, 3012 Bern, Switzerland. raphael.arlettaz@nat.unibe.ch |
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0962-8452 |
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PMID:17341459 |
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Equine Behaviour @ team @ |
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4075 |
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