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| Author | Brannon, E.M.; Terrace, H.S. | ||||
| Title | Ordering of the numerosities 1 to 9 by monkeys | Type | Journal Article | ||
| Year | 1998 | Publication | Science (New York, N.Y.) | Abbreviated Journal | Science |
| Volume | 282 | Issue | 5389 | Pages | 746-749 |
| Keywords | Animals; *Discrimination (Psychology); Macaca mulatta/*psychology; *Mathematics; *Mental Processes | ||||
| Abstract | A fundamental question in cognitive science is whether animals can represent numerosity (a property of a stimulus that is defined by the number of discriminable elements it contains) and use numerical representations computationally. Here, it was shown that rhesus monkeys represent the numerosity of visual stimuli and detect their ordinal disparity. Two monkeys were first trained to respond to exemplars of the numerosities 1 to 4 in an ascending numerical order (1 --> 2 --> 3 --> 4). As a control for non-numerical cues, exemplars were varied with respect to size, shape, and color. The monkeys were later tested, without reward, on their ability to order stimulus pairs composed of the novel numerosities 5 to 9. Both monkeys responded in an ascending order to the novel numerosities. These results show that rhesus monkeys represent the numerosities 1 to 9 on an ordinal scale. | ||||
| Address | Department of Psychology, Columbia University, New York, NY 10027, USA. liz@psych.columbia.edu | ||||
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| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0036-8075 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:9784133 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 606 | ||
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| Author | Brosnan, S.F.; Schiff, H.C.; de Waal, F.B.M. | ||||
| Title | Tolerance for inequity may increase with social closeness in chimpanzees | Type | Journal Article | ||
| Year | 2005 | Publication | Proceedings. Biological sciences / The Royal Society | Abbreviated Journal | Proc Biol Sci |
| Volume | 272 | Issue | 1560 | Pages | 253-258 |
| Keywords | Analysis of Variance; Animals; *Attitude; Group Processes; Pan troglodytes/*psychology; Reward; *Social Behavior; Socioeconomic Factors | ||||
| Abstract | Economic decision-making depends on our social environment. Humans tend to respond differently to inequity in close relationships, yet we know little about the potential for such variation in other species. We examine responses to inequity in several groups of chimpanzees (Pan troglodytes) in a paradigm similar to that used previously in capuchin monkeys (Cebus apella). We demonstrate that, like capuchin monkeys, chimpanzees show a response to inequity of rewards that is based upon the partner receiving the reward rather than the presence of the reward alone. However, we also found a great amount of variation between groups tested, indicating that chimpanzees, like people, respond to inequity in a variable manner, which we speculate could be caused by such variables as group size, the social closeness of the group (as reflected in length of time that the group has been together) and group-specific traditions. | ||||
| Address | Yerkes National Primate Research Center, Emory University, 954 North Gatewood Drive, Atlanta, GA 30329, USA. sbrosna@emory.edu | ||||
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| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0962-8452 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:15705549 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 169 | ||
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| Author | Conradt, L.; Roper, T.J. | ||||
| Title | Group decision-making in animals | Type | Journal Article | ||
| Year | 2003 | Publication | Nature | Abbreviated Journal | Nature |
| Volume | 421 | Issue | 6919 | Pages | 155-158 |
| Keywords | Animals; Behavior, Animal/*physiology; *Decision Making; Democracy; Group Processes; *Models, Biological; Population Density; Social Behavior | ||||
| Abstract | Groups of animals often need to make communal decisions, for example about which activities to perform, when to perform them and which direction to travel in; however, little is known about how they do so. Here, we model the fitness consequences of two possible decision-making mechanisms: 'despotism' and 'democracy'. We show that under most conditions, the costs to subordinate group members, and to the group as a whole, are considerably higher for despotic than for democratic decisions. Even when the despot is the most experienced group member, it only pays other members to accept its decision when group size is small and the difference in information is large. Democratic decisions are more beneficial primarily because they tend to produce less extreme decisions, rather than because each individual has an influence on the decision per se. Our model suggests that democracy should be widespread and makes quantitative, testable predictions about group decision-making in non-humans. | ||||
| Address | School of Biological Sciences, University of Sussex, Brighton BN1 9QG, UK. l.conradt@sussex.ac.uk | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0028-0836 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:12520299 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 5136 | ||
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| Author | Croneya, C.C. | ||||
| Title | Group size and cognitive processes | Type | Journal Article | ||
| Year | 2007 | Publication | Applied Animal Behaviour Science | Abbreviated Journal | Appl. Anim. Behav. Sci. |
| Volume | 103 | Issue | 3-4 | Pages | 15-228 |
| Keywords | Group size; Social complexity; Social learning; Cognitive processes | ||||
| Abstract | Animal group sizes may exert important effects on various cognitive mechanisms. Group size is believed to exert pressures on fundamental brain structures that correlate with the increased social demands placed on animals living in relatively large, complex and dynamic social organizations. There is strong experimental evidence connecting social complexity, social learning and development of other cognitive abilities in a broad range of wild and domesticated animal species. In particular, group size seems to have significant effects on animals? abilities to derive concrete and abstract relationships. Here, we review the literature pertaining to cognitive processes and behaviours of various animal species relative to group size, with emphasis on social learning. It is suggested that understanding the relationship between group size and cognition in animals may yield practical animal management benefits, such as housing and conservation strategies, and may also have implications for improved animal welfare. |
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| Corporate Author | Ruth C. Newberryb | Thesis | |||
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| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 277 | ||
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| Author | de Waal, F.B.; Luttrell, L.M. | ||||
| Title | The similarity principle underlying social bonding among female rhesus monkeys | Type | Journal Article | ||
| Year | 1986 | Publication | Folia primatologica; international journal of primatology | Abbreviated Journal | Folia Primatol (Basel) |
| Volume | 46 | Issue | 4 | Pages | 215-234 |
| Keywords | Aggression; Animals; Dominance-Subordination; Female; Grooming; *Group Processes; Macaca/*physiology; Macaca mulatta/*physiology; Male; *Object Attachment | ||||
| Abstract | Twenty adult female rhesus monkeys (Macaca mulatta) were observed over a three-year period. They lived in a mixed captive group with kinship relations known for three generations. The study's aim was to test Seyfarth's [J. theor. Biol. 65: 671-698, 1977] model of rank-related grooming and to investigate two other possible determinants of social bonding, i.e. relative age and the group's stratification into two social classes. Data on affiliation, coalitions, and social competition were collected by means of both focal observation and instantaneous time sampling. Whereas certain elements of the existing model were confirmed, its explanatory principles were not. Social competition did not result in more contact among close-ranking females (the opposite effect was found), and the relation between affiliative behavior and coalitions was more complex than predicted. Based on multivariate analyses and a comparison of theoretical models, we propose a simpler, more encompassing principle underlying interfemale attraction. According to this 'similarity principle', rhesus females establish bonds with females whom they most resemble. The similarity may concern genetical and social background, age, hierarchical position and social class. Effects of these four factors were independently demonstrated. The most successful model assumed that similarity factors influence female bonding in a cumulative fashion. | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0015-5713 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:3557225 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 211 | ||
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| Author | Devienne, M.F.; Guezennec, C.Y. | ||||
| Title | Energy expenditure of horse riding | Type | Journal Article | ||
| Year | 2000 | Publication | European Journal of Applied Physiology | Abbreviated Journal | Eur J Appl Physiol |
| Volume | 82 | Issue | 5-6 | Pages | 499-503 |
| Keywords | Adult; Animals; Energy Metabolism/*physiology; Exercise/*physiology; Exercise Test; Female; Hemodynamic Processes/physiology; Horses; Humans; Male; Oxygen Consumption/physiology; Respiratory Mechanics/physiology | ||||
| Abstract | Oxygen consumption (VO2), ventilation (VE) and heart rate (HR) were studied in five recreational riders with a portable oxygen analyser (K2 Cosmed, Rome) telemetric system, during two different experimental riding sessions. The first one was a dressage session in which the rider successively rode four different horses at a walk, trot and canter. The second one was a jumping training session. Each rider rode two horses, one known and one unknown. The physiological parameters were measured during warm up at a canter in suspension and when jumping an isolated obstacle at a trot and canter. This session was concluded by a jumping course with 12 obstacles. The data show a progressive increase in VO2 during the dressage session from a mean value of 0.70 (0.18) l x min(-1) [mean (SD)] at a walk, to 1.47 (0.28) l x min(-1) at a trot, and 1.9 (0.3) l x min(-1) at a canter. During the jumping session, rider VO2 was 2 (0.33) l x min(-1) with a mean HR of 155 beats x min(-1) during canter in suspension, obstacle trot and obstacle canter. The jumping course significantly enhanced VO2 and HR up to mean values of 2.40 (0.35) l x min(-1) and 176 beats x min(-1), respectively. The comparison among horses and riders during the dressage session shows differences in energy expenditure according to the horse for the same rider and between riders. During the jumping session, there was no statistical difference between riders riding known and unknown horses. In conclusion these data confirm that riding induces a significant increase in energy expenditure. During jumping, a mean value of 75% VO2max was reached. Therefore, a good aerobic capacity seems to be a factor determining riding performance in competitions. Regular riding practice and additional physical training are recommended to enhance the physical fitness of competitive riders. | ||||
| Address | Universite Paris XII-STAPS-61, Creteil, France. Mfdevienne@aol.com | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1439-6319 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:10985607 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 3731 | ||
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| Author | Gentner, T.Q.; Fenn, K.M.; Margoliash, D.; Nusbaum, H.C. | ||||
| Title | Recursive syntactic pattern learning by songbirds | Type | Journal Article | ||
| Year | 2006 | Publication | Nature | Abbreviated Journal | Nature |
| Volume | 440 | Issue | 7088 | Pages | 1204-1207 |
| Keywords | Acoustic Stimulation; *Animal Communication; Animals; Auditory Perception/*physiology; Humans; *Language; Learning/*physiology; Linguistics; Models, Neurological; Semantics; Starlings/*physiology; Stochastic Processes | ||||
| Abstract | Humans regularly produce new utterances that are understood by other members of the same language community. Linguistic theories account for this ability through the use of syntactic rules (or generative grammars) that describe the acceptable structure of utterances. The recursive, hierarchical embedding of language units (for example, words or phrases within shorter sentences) that is part of the ability to construct new utterances minimally requires a 'context-free' grammar that is more complex than the 'finite-state' grammars thought sufficient to specify the structure of all non-human communication signals. Recent hypotheses make the central claim that the capacity for syntactic recursion forms the computational core of a uniquely human language faculty. Here we show that European starlings (Sturnus vulgaris) accurately recognize acoustic patterns defined by a recursive, self-embedding, context-free grammar. They are also able to classify new patterns defined by the grammar and reliably exclude agrammatical patterns. Thus, the capacity to classify sequences from recursive, centre-embedded grammars is not uniquely human. This finding opens a new range of complex syntactic processing mechanisms to physiological investigation. | ||||
| Address | Department of Organismal Biology and Anatomy, University of Chicago, Chicago, Illinois 60637, USA. tgentner@ucsd.edu | ||||
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| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1476-4687 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:16641998 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 353 | ||
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| Author | Goto, K.; Wills, A.J.; Lea, S.E.G. | ||||
| Title | Global-feature classification can be acquired more rapidly than local-feature classification in both humans and pigeons | Type | Journal Article | ||
| Year | 2004 | Publication | Animal Cognition | Abbreviated Journal | Anim. Cogn. |
| Volume | 7 | Issue | 2 | Pages | 109-113 |
| Keywords | Adult; Animals; Behavior, Animal/physiology; *Classification; Columbidae/*physiology; *Discrimination Learning; Form Perception; Humans; *Mental Processes; *Pattern Recognition, Visual; Species Specificity | ||||
| Abstract | When humans process visual stimuli, global information often takes precedence over local information. In contrast, some recent studies have pointed to a local precedence effect in both pigeons and nonhuman primates. In the experiment reported here, we compared the speed of acquisition of two different categorizations of the same four geometric figures. One categorization was on the basis of a local feature, the other on the basis of a readily apparent global feature. For both humans and pigeons, the global-feature categorization was acquired more rapidly. This result reinforces the conclusion that local information does not always take precedence over global information in nonhuman animals. | ||||
| Address | School of Psychology, Washington Singer Laboratories, University of Exeter, EX4 4QG, Exeter, UK. K.Goto@exeter.ac.uk | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 1435-9448 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:15069610 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 2530 | ||
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| Author | Grubb, T.L.; Foreman, J.H.; Benson, G.J.; Thurmon, J.C.; Tranquilli, W.J.; Constable, P.D.; Olson, W.O.; Davis, L.E. | ||||
| Title | Hemodynamic effects of calcium gluconate administered to conscious horses | Type | Journal Article | ||
| Year | 1996 | Publication | Journal of veterinary internal medicine / American College of Veterinary Internal Medicine | Abbreviated Journal | J Vet Intern Med |
| Volume | 10 | Issue | 6 | Pages | 401-404 |
| Keywords | Animals; Blood Pressure/drug effects/physiology; Calcium/blood; Calcium Gluconate/administration & dosage/*pharmacology; Cardiac Output/drug effects/physiology; Consciousness/*physiology; Dose-Response Relationship, Drug; Female; Heart Rate/drug effects/physiology; Hemodynamic Processes/*drug effects/physiology; Horses/blood/*physiology; Infusions, Intravenous; Male; Myocardial Contraction/drug effects/physiology; Respiration/drug effects/physiology; Stroke Volume/drug effects/physiology; Time Factors | ||||
| Abstract | Calcium gluconate was administered to conscious horses at 3 different rates (0.1, 0.2, and 0.4 mg/kg/min for 15 minutes each). Serum calcium concentrations and parameters of cardiovascular function were evaluated. All 3 calcium administration rates caused marked increases in both ionized and total calcium concentrations, cardiac index, stroke index, and cardiac contractility (dP/dtmax). Mean arterial pressure and right atrial pressure were unchanged; heart rate decreased markedly during calcium administration. Ionized calcium concentration remained between 54% and 57% of total calcium concentration throughout the study. We conclude that calcium gluconate can safely be administered to conscious horses at 0.1 to 0.4 mg/kg/min and that administration will result in improved cardiac function. | ||||
| Address | Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, USA | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0891-6640 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:8947873 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 97 | ||
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| Author | Hinde, R.A. | ||||
| Title | Analyzing the roles of the partners in a behavioral interaction--mother-infant relations in rhesus macaques | Type | Journal Article | ||
| Year | 1969 | Publication | Annals of the New York Academy of Sciences | Abbreviated Journal | Ann N Y Acad Sci |
| Volume | 159 | Issue | 3 | Pages | 651-667 |
| Keywords | Age Factors; Animals; *Behavior, Animal; Female; Group Processes; Haplorhini; Leadership; Maternal Deprivation; *Mother-Child Relations; *Role; Time Factors | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0077-8923 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:4981882 | Approved | no | ||
| Call Number | Serial | 2054 | |||
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