| Home | [1–10] << 11 12 13 14 >> |
|
| Records | |||||
|---|---|---|---|---|---|
| Author | Oliveira, R. F.; McGregor, P.K.; Latruffe, C. | ||||
| Title | Know thine enemy: fighting fish gather information from observing conspecific interactions | Type | Journal Article | ||
| Year | 1998 | Publication  |
Proceedings of the Royal Society B: Biological Sciences | Abbreviated Journal | Proc. Roy. Soc. Lond. B Biol. Sci. |
| Volume | 265 | Issue | 1401 | Pages | 1045-1049 |
| Keywords | |||||
| Abstract | Many of the signals that animals use to communicate transmit relatively large distances and therefore encompass several potential signallers and receivers. This observation challenges the common characterization of animal communication systems as consisting of one signaller and one receiver. Furthermore, it suggests that the evolution of communication behaviour must be considered as occurring in the context of communication networks rather than dyads. Although considerations of selection pressures acting upon signallers in the context of communication networks have rarely been expressed in such terms, it has been noted that many signals exchanged during aggressive interactions will transmit far further than required for information transfer between the individuals directly involved, suggesting that these signals have been designed to be received by other, more distant, individuals. Here we consider the potential for receivers in communication networks to gather information, one aspect of which has been termed eavesdropping. We show that male Betta splendens monitor aggressive interactions between neighbouring conspecifics and use the information on relative fighting ability in subsequent aggressive interactions with the males they have observed. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Medium | |||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 2168 | ||
| Permanent link to this record | |||||
| Author | Dugatkin, L.A. | ||||
| Title | Breaking up fights between others: a model of intervention behaviour | Type | Journal Article | ||
| Year | 1998 | Publication |
Proceedings of the Royal Society of London. Series B: Biological Sciences | Abbreviated Journal | Proc. R. Soc. Lond. B |
| Volume | 265 | Issue | 1394 | Pages | 433-437 |
| Keywords | |||||
| Abstract | To examine when and why animals break up fights between others in their group, I modelled whether ‘winner’ and ‘loser’ effects might be one element driving the evolution of intervention behaviour. I considered one particular type of intervention: when the intervener simply breaks up fights between two others, but does not favour either party in so doing. When victories at time T + 1 are more likely given a victory at time T (i.e. winner effects), intervention is often favoured. Intervention is favoured in these circumstances because the intervening party in essence stops others from ‘getting on a roll’ and climbing up any hierarchy that exists. However, when loser effects alone are at work (defeats at time T + 1 are more likely given a defeat at time T), breaking up fights between others is never selected. If both winner and loser effects are operating simultaneously, then the likelihood of intervention behaviour evolving is a function of the relative strength of these two effects. The greater the winner effect relative to the loser effect, the more likely intervention behaviour is to evolve. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Medium | |||
| Area | Expedition | Conference | |||
| Notes | 10.1098/rspb.1998.0313 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 5240 | ||
| Permanent link to this record | |||||
| Author | Schnall, Simone; Gattis,Merideth | ||||
| Title | Transitive Inference by Visual Reasoning | Type | Conference Volume | ||
| Year | 1998 | Publication |
Proceedings of the Twentieth Annual Conference of the Cognitive Science Society | Abbreviated Journal | |
| Volume | Issue | Pages | 929-934 | ||
| Keywords | |||||
| Abstract | Two experiments are reported that investigated the influence of linear spatial organization on transitive inference performance. Reward/no-reward relations between overlapping pairs of elements were presented in a context of linear spatial order or random spatial order. Participants in the linear arrangement condition showed evidence for visual reasoning: They systematically mapped spatial relations to conceptual relation and used the spatial relations to make inferences on a reasoning task in a new spatial context. We suggest that linear ordering may be a “good figure”, by constituting a parsimonious representation for the integration of premises, as well as for the inferencing process. The late emergence of transitive inference in children may be the result of limited cognitive capacity, which --unless an external spatial array is available --constrains the construction of an internal spatial array. |
||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Medium | |||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 610 | ||
| Permanent link to this record | |||||
| 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 | ||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| 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 | ||
| Permanent link to this record | |||||
| Author | Cox, G.; Ashford, T. | ||||
| Title | Riddle Me This: The Craft and Concept of Animal Mind | Type | Journal Article | ||
| Year | 1998 | Publication |
Science Technology Human Values | Abbreviated Journal | |
| Volume | 23 | Issue | 4 | Pages | 425-438 |
| Keywords | |||||
| Abstract | This article examines the relations between methods used in both animal work and study and concepts of animal mind. By “animal work” the authors mean humans and animals working together, and by “animal study” they mean the discipline of ethology, especially the emerging area of cognitive ethology. Within these areas the wide range of conceptions of animal mind includes varying emphases on intelligence, forms of rationality and language, cognition, consciousness, and intentionality. The authors' central concern is to elucidate the vocabulary and the concepts which seem necessary to establishing successful working relationships with sheepdogs and gundogs. Their argument moves toward an emphasis on the appreciation of particular intentional states and recognizes that they invariably deploy elements of a moral vocabulary in achieving creative teamwork performances with dogs and other animals. The article concludes by consid enng the relevance of accounts of work with animals for associated considerations of intentionality. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Medium | |||
| Area | Expedition | Conference | |||
| Notes | 10.1177/016224399802300404 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 2957 | ||
| Permanent link to this record | |||||
| Author | Khalil, A.M.; Murakami, N.; Kaseda, Y. | ||||
| Title | Relationship between plasma testosterone concentrations and age, breeding season and harem size in Misaki feral horses | Type | Journal Article | ||
| Year | 1998 | Publication |
The Journal of veterinary medical science / the Japanese Society of Veterinary Science | Abbreviated Journal | J Vet Med Sci |
| Volume | 60 | Issue | 5 | Pages | 643-645 |
| Keywords | Age Factors; Animals; Animals, Wild; *Horses; Japan; Male; Reproduction; Seasons; Sexual Behavior, Animal; Sexual Maturation; *Social Behavior; Testosterone/*blood | ||||
| Abstract | Jugular vein blood samples were collected from 23 young and sexual mature feral stallions to examine the relationship between plasma testosterone concentration and age, breeding season or harem size. Testosterone concentration increased with the age of the stallions until they formed their own harems, at about 4 to 6 years old. Seasonal variations in testosterone concentrations were observed, and found to be significantly higher (P<0.001) throughout the breeding season than non-breeding season, from 3 years of age. Testosterone levels were correlated with harem size for individual stallions. It can be inferred from these results that there is a relationship between plasma testosterone concentration and age, breeding season and harem size. | ||||
| Address | Laboratory of Animal Behavioral Science, Faculty of Agriculture, Miyazaki University, Japan | ||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0916-7250 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:9637303 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 137 | ||
| Permanent link to this record | |||||
| Author | Clement, T.S.; Weaver, J.E.; Sherburne, L.M.; Zentall, T.R. | ||||
| Title | Simultaneous discrimination learning in pigeons: value of S- affects the relative value of its associated S+ | Type | Journal Article | ||
| Year | 1998 | Publication |
The Quarterly journal of experimental psychology. B, Comparative and physiological psychology | Abbreviated Journal | Q J Exp Psychol B |
| Volume | 51 | Issue | 4 | Pages | 363-378 |
| Keywords | Animals; *Attention; Color Perception; Columbidae; *Discrimination Learning; Female; Male; *Motivation; Orientation; Transfer (Psychology) | ||||
| Abstract | In a simple simultaneous discrimination involving a positive stimulus (S+) and a negative stimulus (S-), it has been hypothesized that positive value can transfer from the S+ to the S- (thus increasing the relative value of the S-) and also that negative value can transfer from the S- to the S+ (thus diminishing the relative value of the S+; Fersen, Wynne, Delius, & Staddon, 1991). Evidence for positive value transfer has been reported in pigeons (e.g. Zentall & Sherburne, 1994). The purpose of the present experiments was to determine, in a simultaneous discrimination, whether the S- diminishes the value of the S+ or the S- is contrasted with the S+ (thus enhancing the value of the S+). In two experiments, we found evidence for contrast, rather than value transfer, attributable to simultaneous discrimination training. Thus, not only does the S+ appear to enhance the value of the S-, but the S- appears to enhance rather than reduce the value of the S+. | ||||
| Address | Department of Psychology, University of Kentucky, Lexington 40506-0044, USA | ||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0272-4995 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:9854439 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 252 | ||
| Permanent link to this record | |||||
| Author | Lachmann M.; Bergstrom C.T. | ||||
| Title | Signalling among Relatives II. Beyond the Tower of Babel | Type | Journal Article | ||
| Year | 1998 | Publication |
Theoretical Population Biology | Abbreviated Journal | Theor. Pop. Biol. |
| Volume | 54 | Issue | 2 | Pages | 146-160 |
| Keywords | |||||
| Abstract | Models of costly signalling are commonly employed in evolutionary biology in order to explain how honest communication between individuals with conflicting interests can be stable. These models have focused primarily on a single type of honest signalling equilibrium, the separating equilibrium in which any two different signallers send distinct signals, thereby providing signal receivers with complete information. In this paper, we demonstrate that in signalling among relatives (modelled using the Sir Philip Sidney game), there is not one but a large number of possible signalling equilibria, most of which are pooling equilibria in which different types of signallers may share a common signal. We prove that in a general Sir Philip Sidney game, any partition of signallers into equi-signalling classes can have a stable signalling equilibrium if and only if it is a contiguous partition, and provide examples of such partitions. A similar (but slightly stricter) condition is shown to hold when signals are transmitted through a medium with signalling error. These results suggest a solution to a problem faced by previous signalling theory models: when we consider the separating equilibrium, signal cost is independent of the frequency of individuals sending that signal and, consequently, even very rare signaller types can drastically affect signal cost. Here, we show that by allowing these rare signallers to pool with more common signallers, signal cost can be greatly reduced. Copyright 1998 Academic Press. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Medium | |||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 560 | ||
| Permanent link to this record | |||||
| Author | McLaren I.P.L. | ||||
| Title | Animal Learning and Cognition: A neural network approach | Type | Journal Article | ||
| Year | 1998 | Publication |
Trends in Cognitive Sciences | Abbreviated Journal | Trends. Cognit. Sci. |
| Volume | 2 | Issue | Pages | 236-236 | |
| Keywords | |||||
| Abstract | |||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Medium | |||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 3464 | ||
| Permanent link to this record | |||||
| Author | Vallortigara G. | ||||
| Title | Minds of Their Own | Type | Journal Article | ||
| Year | 1998 | Publication |
Trends in Cognitive Sciences | Abbreviated Journal | Trends. Cognit. Sci. |
| Volume | 2 | Issue | Pages | 118-118 | |
| Keywords | |||||
| Abstract | |||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Medium | |||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 3466 | ||
| Permanent link to this record | |||||