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Author |
de Waal, F.B. |
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Title |
Primates--A natural heritage of conflict resolution |
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Journal Article |
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Year |
2000 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
289 |
Issue |
5479 |
Pages |
586-590 |
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Aggression/*psychology; Animals; Behavior, Animal; *Conflict (Psychology); Female; Humans; Male; *Primates; *Social Behavior; Social Dominance |
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The traditional notion of aggression as an antisocial instinct is being replaced by a framework that considers it a tool of competition and negotiation. When survival depends on mutual assistance, the expression of aggression is constrained by the need to maintain beneficial relationships. Moreover, evolution has produced ways of countering its disruptive consequences. For example, chimpanzees kiss and embrace after fights, and other nonhuman primates engage in similar “reconciliations.” Theoretical developments in this field carry implications for human aggression research. From families to high schools, aggressive conflict is subject to the same constraints known of cooperative animal societies. It is only when social relationships are valued that one can expect the full complement of natural checks and balances. |
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Living Links, Center for the Advanced Study of Human and Ape Evolution, Yerkes Regional Primate Research Center, and Psychology Department, Emory University, Atlanta, GA 30322, USA. dewaal@emory.edu |
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0036-8075 |
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PMID:10915614 |
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187 |
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Author |
Pereira, M.E.; Schill, J.L.; Charles, E.P. |
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Title |
Reconciliation in captive Guyanese squirrel monkeys (Saimiri sciureus) |
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Journal Article |
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Year |
2000 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
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50 |
Issue |
2 |
Pages |
159-167 |
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Aggression; Agonistic Behavior; Animals; Conflict (Psychology); Female; Guyana; Male; Saimiri/*psychology; *Social Behavior; Social Dominance |
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The tendency for agonistic interaction to increase the probability of friendly interaction between social partners has been demonstrated across a range of Old World primates. While research on such post-conflict behavior proceeds into an hypothesis-testing phase, new comparative information must accumulate to provide full phylogenetic perspective on primate social behavior. Data from New World and prosimian primates are yet extremely limited. We studied captive squirrel monkeys (Saimiri sciureus) via post-conflict (PC) and matched control (MC) observations and analyzed results using both the PC-MC and time-rule methods. Former opponents maintaining affiliative relationships soon engaged in friendly interaction following large proportions of agonistic interactions, whereas non-affiliated individuals, including virtually all male-female pairs, reconciled conflicts rarely. Close-proximity approaching and huddling contact constituted the principal modes of post-conflict amicability. Agonistic interactions of relatively high intensity were most likely to be reconciled and most likely to be reconciled via physical contact. High vulnerability of Saimiri to predation may have favored this species' strong inclination to reconcile soon after agonistic interaction. Research on free-living populations of this and other primate species is needed to illuminate similarities and differences across taxa. |
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Department of Biology and Program in Animal Behavior, Bucknell University, Lewisburg, Pennsylvania 17837, USA. mpereira@bucknell.edu |
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0275-2565 |
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PMID:10676712 |
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refbase @ user @ |
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2878 |
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Author |
Feist, J.D.; McCullough, D.R. |
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Title |
Reproduction in feral horses |
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Journal Article |
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Year |
1975 |
Publication |
Journal of Reproduction and Fertility. Supplement |
Abbreviated Journal |
J Reprod Fertil Suppl |
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23 |
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13-18 |
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Age Factors; Animals; Female; Horses/*physiology; Leadership; Male; Maternal Behavior; Population; Reproduction; *Sexual Behavior, Animal; Social Dominance; Sucking Behavior |
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A behavioural study of feral horses was conducted on the Pryor Mountain Wild Horse Range in the western United States. All 270 horses on the Range were identified individually. The sex ratio was nearly balanced. Foal to adult female ratio was 43-2:100. Morality was concentrated among foals and old horses. Horses were organized as forty-four harem groups each with a dominant stallion, one to two immature stallions, one to three immature mares, one to three adult mares and their yearling and foal offspring, and 23 bachelor groups of one to eight stallions. Harem groups were quite stable year-round because of dominance and leadership by the stallions and group fidelity by mares and their offsring. Most changes occurred during the breeding season and involved immature females. Defeat of dominant stallions was infrequent. Immature males were tolerated because of their submissive behaviour. Bachelor stallion groups were inherently unstable. Mares came into heat after foaling in May/June, and were mated by harem stallions only. |
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0449-3087 |
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PMID:1060766 |
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no |
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refbase @ user @ |
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1964 |
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Author |
Dow, M.; Ewing, A.W.; Sutherland, I. |
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Title |
Studies on the behaviour of cyprinodont fish. III. The temporal patterning of aggression in Aphyosemion striatum (Boulenger) |
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Journal Article |
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1976 |
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Behaviour |
Abbreviated Journal |
Behaviour |
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59 |
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3-4 |
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252-268 |
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*Aggression; Animals; *Behavior, Animal; Dominance-Subordination; *Fishes; Humans; Individuality; *Killifishes; Male; Time Factors |
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0005-7959 |
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PMID:1035107 |
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Equine Behaviour @ team @ |
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4151 |
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Chaudhuri, M.; Ginsberg, J.R. |
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Urinary androgen concentrations and social status in two species of free ranging zebra (Equus burchelli and E. grevyi). |
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Journal Article |
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Year |
1990 |
Publication |
Journal of Reproduction and Fertility |
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J Reprod Fert |
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88 |
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127-133 |
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Keywords |
zebra; testosterone; androgens; territoriality; social behaviour; dominance |
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In both species of zebra, breeding males had higher urinary androgen concentrations (ng androgens/mg Cr) than did non-breeding bachelor males (30.0 +/- 5.0 (N = 9) versus 11.4 +/- 2.8, (N = 7) in the plains zebra; 19.0 +/- 2.2 (N = 17) versus 10.7 +/- 1.2 (N = 14) in the Grevy's zebra). In the more stable family structure of the plains zebra (single male non-territorial groups) variations in androgen concentrations could not be ascribed to any measured variable. In the Grevy's zebra, androgen values were significantly lower in samples taken from territorial (breeding) males which had temporarily abandoned their territories (N = 4) and the urinary androgen concentration for a male on his territory was negatively correlated with the time since females last visited the territory. |
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from Professor Hans Klingels Equine Reference List |
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yes |
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987 |
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Weeks, J.W.; Crowell-Davis, S.L.; Caudle, A.B.; Heusner, G.L. |
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Aggression and social spacing in light horse (Equus caballus) mares and foals |
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Journal Article |
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Year |
2000 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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68 |
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4 |
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319-337 |
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Dominance relationships; Horse; Sex differences; Social ontogeny; aggregation; parent-offspring interaction; social behavior |
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Aggression and social spacing were studied in 14 light horse mares and their foals living at pasture. Focal samples were collected on each mare-foal dyad for 6 to 10.5 h from 2 months of foal age until weaning at approximately 4 months of age. Observations on foals continued until approximately 6 months of age for 7.5 to 10.5 h per foal. Every 2 min the identities of all individuals within 5 m were recorded. All occurrences of agonistic behavior, and the participants, were recorded during the focal samples. In addition, during feeding of supplemental grain, all occurrences of agonistic behavior by all subjects were recorded. Significant correlations were found between mare rank and the rank of foals both prior to and after weaning. Before weaning, the rank of the foal was significantly correlated with birth order. No significant correlation between birth order and foal rank was found for the post-weaning hierarchy. An animal's gender had no significant effect on foal rank or the choice of preferred associate. Both prior to and after weaning, foals associated preferentially with the foal of their dam's most preferred associate. In addition, significant positive correlations were found between rank of mares and foals and the rate at which they directed aggression to other herd members. (C) 2000 Elsevier Science B.V. |
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Cited By (since 1996): 7; Export Date: 21 April 2007; Source: Scopus |
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refbase @ user @ |
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788 |
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Author |
Drummond, H. |
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Title |
Dominance in vertebrate broods and litters |
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Journal Article |
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Year |
2006 |
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Quarterly Review of Biology |
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81 |
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1 |
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3-32 |
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Aggression; Assessment; Dominance; Individual recognition; Sibling conflict; Trained losing |
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Drawing on the concepts and theory of dominance in adult vertebrates, this article categorizes the relationships of dominance between infant siblings, identifies the behavioral mechanisms that give rise to those relationships, and proposes a model to explain their evolution. Dominance relationships in avian broods can be classified according to the agonistic roles of dominants and subordinates as “aggression-submission,” “aggression-resistance, ” “aggression-aggression,” “aggression-avoidance,” “rotating dominance,” and “flock dominance.” These relationships differ mainly in the submissiveness/pugnacity of subordinates, which is pivotal, and in the specificity/generality of the learning processes that underlie them. As in the dominance hierarchies of adult vertebrates, agonistic roles are engendered and maintained by several mechanisms, including differential fighting ability, assessment, trained winning and losing (especially in altricial species), learned individual relationships (especially in precocial species), site-specific learning, and probably group-level effects. An evolutionary framework in which the species-typical dominance relationship is determined by feeding mode, confinement, cost of subordination, and capacity for individual recognition, can be extended to mammalian litters and account for the aggression-submission and aggression-resistance observed in distinct populations of spotted hyenas and the “site-specific dominance” (teat ownership) of some pigs, felids, and hyraxes. Little is known about agonism in the litters of other mammals or broods of poikilotherms, but some species of fish and crocodilians have the potential for dominance among broodmates. Copyright © 2006 by The University of Chicago. All rights reserved. |
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Instituto de Ecología, Universidad Nacional Autónoma de México, A.P. 70-275, 04510 D.F., Mexico |
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Cited By (since 1996): 20; Export Date: 23 October 2008; Source: Scopus |
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Equine Behaviour @ team @ |
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4559 |
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Schooening, B. |
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Ethology of the horse |
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Journal Article |
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Year |
1998 |
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Praktische Tierarzt |
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Prakt. Tierarzt |
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79 |
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6 Suppl. |
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25-28 |
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Dominance; Ethology; Horse; Propedeutics |
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The paper starts with a short introduction/definition about ethology and the used methods in this scientific field, giving special examples for horses and about how their “normal behaviour” is measured. The behaviour repertoire of horses is described in a brief outline with special emphasis on their social systems and hierarchies and the problem of dominance, especially in interaction with humans. Schlütersche GmbH & Co. KG, Verlag und Druckerei. |
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Saselbergweg 32, 22395 Hamburg, Germany |
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0032681x (Issn) |
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Cited By (since 1996): 1; Export Date: 21 April 2007; Source: Scopus; Language of Original Document: German; Correspondence Address: Schoßning, B.Saselbergweg 32 22395 Hamburg, Germany; email: Dr.B.Schoening@t-online.de |
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refbase @ user @ |
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789 |
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Author |
Krueger, K. |
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Behaviour of horses in the “round pen technique” |
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Journal Article |
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2007 |
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Applied Animal Behaviour Science |
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Appl. Anim. Behav. Sci. |
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104 |
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1-2 |
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162-170 |
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Learning; Dominance relationship; Horse; Human-animal relationships |
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I investigated the behavioural background of the way horses learn to follow humans in the “round pen technique” suggested by “horse whisperers” as a gentle method for initial horse training. Though the practicability of this technique has been adequately demonstrated in the past, the horses' behaviour during such training has not yet been documented in detail. In a riding arena, horses, that did not follow the trainer immediately, were chased away so that they galloped around the trainer. Galloping horses showed specific behaviour such as turning the ear to the trainer, chewing, licking, and stretching head and throat downwards. In subsequent trials horses needed to be chased for less time and finally followed immediately, even when conditions were changed or the trainer was replaced by another person. This suggests that horses learn to follow in this particular situation and also show some generalisation. However, following did not occur on a pasture even after several successful trials in the riding arena. |
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280 |
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Croney, C.C.; Prince-Kelly, N.; Meller, C.L. |
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Title |
A note on social dominance and learning ability in the domestic chicken (Gallus gallus) |
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Journal Article |
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2007 |
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Applied Animal Behaviour Science |
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Appl. Anim. Behav. Sci. |
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105 |
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1-3 |
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254-259 |
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Chickens; Learning; Dominance |
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Relatively little is known about the relationship between social behavior and specific cognitive abilities of the chicken. It is uncertain whether dominant birds have a cognitive advantage over subordinate birds that might facilitate their superior position in the social hierarchy. Likewise, it is unknown whether subordinate birds compete successfully with higher ranking birds because their cognitive capacities compensate for physical deficits. In this study, the relationship between the chicken's position in the dominance hierarchy and its performance on a cognitive task was explored. Ten pairs of New Hampshire domestic roosters (Gallus gallus) were observed to determine dominance or subordinance within dyads. All birds were then trained and tested on a visual discrimination learning task. Discriminative stimuli were orange and green plastic discs. Correct stimuli (orange or green) were randomly assigned to birds. Placement of the discs (left or right of center) was also randomly assigned and counterbalanced to avoid a side bias. Birds were rewarded with food for pecking at the correct disc. Criterion for task completion was 80% correct responses on three consecutive test sessions or 86% correct on two consecutive sessions. All subjects met the test criterion. The number of trials to criterion was compared between dominant and subordinate birds using a paired t-test. No difference was found in performance between dominant and subordinate birds (p > 0.05) suggesting that in chickens, ability to learn a novel visual discrimination task is not well correlated with rank. Additional studies, particularly using different learning paradigms, are needed to confirm these results. |
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