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Author |
Brosnan, S.F.; De Waal, F.B.M. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Monkeys reject unequal pay |
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Journal Article |
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Year |
2003 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Nature |
Abbreviated Journal |
Nature |
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Volume |
425 |
Issue |
6955 |
Pages |
297-299 |
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Aging; Animals; Cebus/*psychology; Choice Behavior; *Cooperative Behavior; Female; Male; *Reward; Social Justice |
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Abstract |
During the evolution of cooperation it may have become critical for individuals to compare their own efforts and pay-offs with those of others. Negative reactions may occur when expectations are violated. One theory proposes that aversion to inequity can explain human cooperation within the bounds of the rational choice model, and may in fact be more inclusive than previous explanations. Although there exists substantial cultural variation in its particulars, this 'sense of fairness' is probably a human universal that has been shown to prevail in a wide variety of circumstances. However, we are not the only cooperative animals, hence inequity aversion may not be uniquely human. Many highly cooperative nonhuman species seem guided by a set of expectations about the outcome of cooperation and the division of resources. Here we demonstrate that a nonhuman primate, the brown capuchin monkey (Cebus apella), responds negatively to unequal reward distribution in exchanges with a human experimenter. Monkeys refused to participate if they witnessed a conspecific obtain a more attractive reward for equal effort, an effect amplified if the partner received such a reward without any effort at all. These reactions support an early evolutionary origin of inequity aversion. |
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Living Links, Yerkes National Primate Research Center, Emory University, Atlanta, Georgia 30329, USA. sbrosna@emory.edu |
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1476-4687 |
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PMID:13679918 |
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no |
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Call Number |
refbase @ user @ |
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179 |
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Author |
de Waal, F.B.; Berger, M.L. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Payment for labour in monkeys |
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Journal Article |
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Year |
2000 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Nature |
Abbreviated Journal |
Nature |
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Volume |
404 |
Issue |
6778 |
Pages |
563 |
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Keywords |
Animals; Cebus/*physiology; *Cooperative Behavior; Evolution; *Feeding Behavior; Female; Male; Reward |
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Living Links, Yerkes Regional Primate Research Center, and Department of Psychology, Emory University, Atlanta, Georgia 30329, USA. dewaal@emory.edu |
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0028-0836 |
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PMID:10766228 |
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refbase @ user @ |
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190 |
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Author |
Parr, L.A.; de Waal, F.B. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Visual kin recognition in chimpanzees |
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Year |
1999 |
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Nature |
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399 |
Issue |
6737 |
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647-648 |
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Animals; *Behavior, Animal; Face; Female; Male; Pan troglodytes/*physiology |
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0028-0836 |
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PMID:10385114 |
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refbase @ user @ |
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195 |
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Author |
Flack, J.C.; Girvan, M.; de Waal, F.B.M.; Krakauer, D.C. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Policing stabilizes construction of social niches in primates |
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Journal Article |
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Year |
2006 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Nature |
Abbreviated Journal |
Nature |
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Volume |
439 |
Issue |
7075 |
Pages |
426-429 |
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Keywords |
Animals; Conflict (Psychology); Female; Macaca nemestrina/*physiology/*psychology; Male; Models, Biological; *Social Behavior |
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Abstract |
All organisms interact with their environment, and in doing so shape it, modifying resource availability. Termed niche construction, this process has been studied primarily at the ecological level with an emphasis on the consequences of construction across generations. We focus on the behavioural process of construction within a single generation, identifying the role a robustness mechanism--conflict management--has in promoting interactions that build social resource networks or social niches. Using 'knockout' experiments on a large, captive group of pigtailed macaques (Macaca nemestrina), we show that a policing function, performed infrequently by a small subset of individuals, significantly contributes to maintaining stable resource networks in the face of chronic perturbations that arise through conflict. When policing is absent, social niches destabilize, with group members building smaller, less diverse, and less integrated grooming, play, proximity and contact-sitting networks. Instability is quantified in terms of reduced mean degree, increased clustering, reduced reach, and increased assortativity. Policing not only controls conflict, we find it significantly influences the structure of networks that constitute essential social resources in gregarious primate societies. The structure of such networks plays a critical role in infant survivorship, emergence and spread of cooperative behaviour, social learning and cultural traditions. |
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Santa Fe Institute, Santa Fe, New Mexico 87501, USA. jflack@santafe.edu |
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1476-4687 |
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PMID:16437106 |
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no |
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refbase @ user @ |
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298 |
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Author |
Paz-y-Miño C. G.; Bond, A.B.; Kamil, A.C.; Balda, R.P. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Pinyon jays use transitive inference to predict social dominance |
Type |
Journal Article |
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Year |
2004 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Nature |
Abbreviated Journal |
Nature |
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Volume |
430 |
Issue |
7001 |
Pages |
778-781 |
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Keywords |
Animals; Cognition/*physiology; Group Structure; Male; *Social Dominance; Songbirds/*physiology |
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Abstract |
Living in large, stable social groups is often considered to favour the evolution of enhanced cognitive abilities, such as recognizing group members, tracking their social status and inferring relationships among them. An individual's place in the social order can be learned through direct interactions with others, but conflicts can be time-consuming and even injurious. Because the number of possible pairwise interactions increases rapidly with group size, members of large social groups will benefit if they can make judgments about relationships on the basis of indirect evidence. Transitive reasoning should therefore be particularly important for social individuals, allowing assessment of relationships from observations of interactions among others. Although a variety of studies have suggested that transitive inference may be used in social settings, the phenomenon has not been demonstrated under controlled conditions in animals. Here we show that highly social pinyon jays (Gymnorhinus cyanocephalus) draw sophisticated inferences about their own dominance status relative to that of strangers that they have observed interacting with known individuals. These results directly demonstrate that animals use transitive inference in social settings and imply that such cognitive capabilities are widespread among social species. |
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Center for Avian Cognition, School of Biological Sciences, University of Nebraska, Lincoln, Nebraska 68588, USA |
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1476-4687 |
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PMID:15306809 |
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refbase @ user @; Equine Behaviour @ team @ room B 3.029 |
Serial |
352 |
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Permanent link to this record |
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Author |
Arnold, K.; Zuberbuhler, K. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Language evolution: semantic combinations in primate calls |
Type |
Journal Article |
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Year |
2006 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Nature |
Abbreviated Journal |
Nature |
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Volume |
441 |
Issue |
7091 |
Pages |
303 |
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Keywords |
Animal Migration; Animals; Eagles/physiology; *Evolution; Female; Haplorhini/*physiology; Male; Predatory Behavior; *Semantics; *Vocalization, Animal |
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Syntax sets human language apart from other natural communication systems, although its evolutionary origins are obscure. Here we show that free-ranging putty-nosed monkeys combine two vocalizations into different call sequences that are linked to specific external events, such as the presence of a predator and the imminent movement of the group. Our findings indicate that non-human primates can combine calls into higher-order sequences that have a particular meaning. |
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School of Psychology, University of St Andrews, St Andrews KY16 9JP, UK |
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1476-4687 |
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PMID:16710411 |
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no |
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refbase @ user @ |
Serial |
354 |
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Permanent link to this record |
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Author |
Shettleworth, S.J. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Cognitive science: rank inferred by reason |
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Journal Article |
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Year |
2004 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Nature |
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Nature |
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Volume |
430 |
Issue |
7001 |
Pages |
732-733 |
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Animals; Cognition/*physiology; Group Structure; Male; *Social Dominance; Songbirds/*physiology |
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1476-4687 |
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PMID:15306792 |
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refbase @ user @ |
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365 |
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Author |
Amdam, G.V.; Csondes, A.; Fondrk, M.K.; Page, R.E.J. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Complex social behaviour derived from maternal reproductive traits |
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Journal Article |
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2006 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Nature |
Abbreviated Journal |
Nature |
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Volume |
439 |
Issue |
7072 |
Pages |
76-78 |
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Aging/physiology; Animals; Bees/*physiology; *Evolution; Feeding Behavior/*physiology; Female; Infertility, Female; Maternal Behavior/*physiology; Ovary/physiology; Pollen/metabolism; Reproduction/*physiology; *Social Behavior |
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A fundamental goal of sociobiology is to explain how complex social behaviour evolves, especially in social insects, the exemplars of social living. Although still the subject of much controversy, recent theoretical explanations have focused on the evolutionary origins of worker behaviour (assistance from daughters that remain in the nest and help their mother to reproduce) through expression of maternal care behaviour towards siblings. A key prediction of this evolutionary model is that traits involved in maternal care have been co-opted through heterochronous expression of maternal genes to result in sib-care, the hallmark of highly evolved social life in insects. A coupling of maternal behaviour to reproductive status evolved in solitary insects, and was a ready substrate for the evolution of worker-containing societies. Here we show that division of foraging labour among worker honey bees (Apis mellifera) is linked to the reproductive status of facultatively sterile females. We thereby identify the evolutionary origin of a widely expressed social-insect behavioural syndrome, and provide a direct demonstration of how variation in maternal reproductive traits gives rise to complex social behaviour in non-reproductive helpers. |
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Arizona State University, School of Life Sciences, Tempe, Arizona 85287, USA. Gro.Amdam@asu.edu |
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1476-4687 |
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PMID:16397498 |
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no |
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refbase @ user @ |
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531 |
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Author |
Grosenick, L.; Clement, T.S.; Fernald, R.D. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Fish can infer social rank by observation alone |
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Journal Article |
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Year |
2007 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Nature |
Abbreviated Journal |
Nature |
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Volume |
445 |
Issue |
7126 |
Pages |
429-432 |
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Aggression/physiology; Animals; Cognition/*physiology; Female; Fishes/*physiology; Learning/*physiology; Male; Models, Biological; *Social Dominance; Territoriality |
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Abstract |
Transitive inference (TI) involves using known relationships to deduce unknown ones (for example, using A > B and B > C to infer A > C), and is thus essential to logical reasoning. First described as a developmental milestone in children, TI has since been reported in nonhuman primates, rats and birds. Still, how animals acquire and represent transitive relationships and why such abilities might have evolved remain open problems. Here we show that male fish (Astatotilapia burtoni) can successfully make inferences on a hierarchy implied by pairwise fights between rival males. These fish learned the implied hierarchy vicariously (as 'bystanders'), by watching fights between rivals arranged around them in separate tank units. Our findings show that fish use TI when trained on socially relevant stimuli, and that they can make such inferences by using indirect information alone. Further, these bystanders seem to have both spatial and featural representations related to rival abilities, which they can use to make correct inferences depending on what kind of information is available to them. Beyond extending TI to fish and experimentally demonstrating indirect TI learning in animals, these results indicate that a universal mechanism underlying TI is unlikely. Rather, animals probably use multiple domain-specific representations adapted to different social and ecological pressures that they encounter during the course of their natural lives. |
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Department of Biological Sciences, Stanford University, Stanford, California, 94305, USA. logang@stanford.edu |
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PMID:17251980 |
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refbase @ user @ |
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600 |
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Permanent link to this record |
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Author |
Whiten, A. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
The second inheritance system of chimpanzees and humans |
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Journal Article |
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Year |
2005 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Nature |
Abbreviated Journal |
Nature |
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Volume |
437 |
Issue |
7055 |
Pages |
52-55 |
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Animals; Animals, Wild/physiology/psychology; Behavior, Animal/*physiology; *Culture; Female; Humans; Imitative Behavior; Learning/*physiology; Pan troglodytes/*physiology/psychology; *Social Behavior; Technology |
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Half a century of dedicated field research has brought us from ignorance of our closest relatives to the discovery that chimpanzee communities resemble human cultures in possessing suites of local traditions that uniquely identify them. The collaborative effort required to establish this picture parallels the one set up to sequence the chimpanzee genome, and has revealed a complex social inheritance system that complements the genetic picture we are now developing. |
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Centre for Social Learning and Cognitive Evolution, and Scottish Primate Research Group, School of Psychology, University of St Andrews, St Andrews, Fife KY16 9JP, UK. a.whiten@st-and.ac.uk |
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1476-4687 |
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PMID:16136127 |
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no |
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refbase @ user @ |
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730 |
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Permanent link to this record |