Records |
Author |
Barth, J.; Reaux, J.E.; Povinelli, D.J. |
Title |
Chimpanzees' (Pan troglodytes) use of gaze cues in object-choice tasks: different methods yield different results |
Type |
Journal Article |
Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
8 |
Issue |
2 |
Pages |
84-92 |
Keywords |
Animals; *Attention; *Choice Behavior; *Cues; *Eye Movements; Female; Male; *Nonverbal Communication; Orientation; Pan troglodytes/*psychology; Social Environment |
Abstract |
To assess the influence of different procedures on chimpanzees' performance in object-choice tasks, five adult chimpanzees were tested using three experimenter-given cues to food location: gazing, glancing, and pointing. These cues were delivered to the subjects in an identical fashion but were deployed within the context of two distinct meta-procedures that have been previously employed with this species with conflicting results. In one procedure, the subjects entered the test unit and approached the experimenter (who had already established the cue) on each trial. In the other procedure, the subjects stayed in the test unit throughout a session, witnessed the hiding procedure, and waited for a delay of 10 s during which the cue was provided. The subjects scored at high levels far exceeding chance in response to the gaze cue only when they approached the experimenter for each trial. They performed at chance levels when they stayed inside the test unit throughout the session. They scored at chance levels on all other cues irrespective of the procedure. These findings imply that (a) chimpanzees can immediately exploit social gaze cues, and (b) previous conflicting findings were likely due to the different meta-procedures that were used. |
Address |
Department of Neurocognition, Faculty of Psychology, Universiteit Maastricht, P.O. Box 616, 6200 MD, Maastricht, The Netherlands. j.barth@psychology.unimaas.nl |
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1435-9448 |
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PMID:15449100 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2510 |
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Author |
Danchin, E.; Giraldeau, L.-A.; Valone, T.J.; Wagner, R.H. |
Title |
Public information: from nosy neighbors to cultural evolution |
Type |
Journal Article |
Year |
2004 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
Volume |
305 |
Issue |
5683 |
Pages |
487-491 |
Keywords |
Animals; *Behavior, Animal; Cues; *Cultural Evolution; *Decision Making; Environment; Evolution; Feeding Behavior; Female; Genes; Humans; Male; Reproduction; Sexual Behavior, Animal |
Abstract |
Psychologists, economists, and advertising moguls have long known that human decision-making is strongly influenced by the behavior of others. A rapidly accumulating body of evidence suggests that the same is true in animals. Individuals can use information arising from cues inadvertently produced by the behavior of other individuals with similar requirements. Many of these cues provide public information about the quality of alternatives. The use of public information is taxonomically widespread and can enhance fitness. Public information can lead to cultural evolution, which we suggest may then affect biological evolution. |
Address |
U.P.M.C. CNRS-UMR7625, Bat A-7e etage-Case 237, 7 quai Saint Bernard, 75252 Paris Cedex 05, France. edanchin@snv.jussieu.fr |
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1095-9203 |
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PMID:15273386 |
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no |
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Serial |
2131 |
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Author |
Blaisdell, A.P.; Cook, R.G. |
Title |
Integration of spatial maps in pigeons |
Type |
Journal Article |
Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
8 |
Issue |
1 |
Pages |
7-16 |
Keywords |
Animals; Appetitive Behavior/physiology; Association Learning/*physiology; Columbidae/*physiology; Conditioning, Classical/physiology; *Cues; Problem Solving/*physiology; Space Perception/*physiology; Spatial Behavior/physiology |
Abstract |
The integration of spatial maps in pigeons was investigated using a spatial analog to sensory preconditioning. The pigeons were tested in an open-field arena in which they had to locate hidden food among a 4x4 grid of gravel-filled cups. In phase 1, the pigeons were exposed to a consistent spatial relationship (vector) between landmark L (a red L-shaped block of wood), landmark T (a blue T-shaped block of wood) and the hidden food goal. In phase 2, the pigeons were then exposed to landmark T with a different spatial vector to the hidden food goal. Following phase 2, pigeons were tested with trials on which they were presented with only landmark L to examine the potential integration of the phase 1 and 2 vectors via their shared common elements. When these test trials were preceded by phase 1 and phase 2 reminder trials, pigeons searched for the goal most often at a location consistent with their integration of the L-->T phase 1 and T-->phase 2 goal vectors. This result indicates that integration of spatial vectors acquired during phases 1 and 2 allowed the pigeons to compute a novel L-->goal vector. This suggests that spatial maps may be enlarged by successively integrating additional spatial information through the linkage of common elements. |
Address |
Department of Psychology, University of California, Los Angeles, 1285 Franz Hall, Box 951563, Los Angeles, CA 90095-1563, USA. blaisdell@psych.ucla.edu |
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1435-9448 |
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PMID:15221636 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2521 |
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Author |
Virányi, Z.; Topál, J.; Gácsi, M.; Miklósi, Á.; Csányi, V. |
Title |
Dogs respond appropriately to cues of humans' attentional focus |
Type |
Journal Article |
Year |
2004 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
Volume |
66 |
Issue |
2 |
Pages |
161-172 |
Keywords |
Animals; *Attention; Bonding, Human-Pet; Communication; *Cues; Dogs; Humans; Recognition (Psychology) |
Abstract |
Dogs' ability to recognise cues of human visual attention was studied in different experiments. Study 1 was designed to test the dogs' responsiveness to their owner's tape-recorded verbal commands (Down!) while the Instructor (who was the owner of the dog) was facing either the dog or a human partner or none of them, or was visually separated from the dog. Results show that dogs were more ready to follow the command if the Instructor attended them during instruction compared to situations when the Instructor faced the human partner or was out of sight of the dog. Importantly, however, dogs showed intermediate performance when the Instructor was orienting into 'empty space' during the re-played verbal commands. This suggests that dogs are able to differentiate the focus of human attention. In Study 2 the same dogs were offered the possibility to beg for food from two unfamiliar humans whose visual attention (i.e. facing the dog or turning away) was systematically varied. The dogs' preference for choosing the attentive person shows that dogs are capable of using visual cues of attention to evaluate the human actors' responsiveness to solicit food-sharing. The dogs' ability to understand the communicatory nature of the situations is discussed in terms of their social cognitive skills and unique evolutionary history. |
Address |
Department of Ethology, Eotvos Lorand University, Budapest, Hungary. zsofi.viranyi@freemail.hu |
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0376-6357 |
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PMID:15110918 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
4957 |
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Author |
Scheumann, M.; Call, J. |
Title |
The use of experimenter-given cues by South African fur seals (Arctocephalus pusillus) |
Type |
Journal Article |
Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
7 |
Issue |
4 |
Pages |
224-230 |
Keywords |
Animal Communication; Animals; *Association Learning; *Cues; Female; Fur Seals/*psychology; *Gestures; Humans; *Imitative Behavior; Nonverbal Communication; Social Behavior; Species Specificity |
Abstract |
Dogs can use a variety of experimenter-given cues such as pointing, head direction, and eye direction to locate food hidden under one of several containers. Some authors have proposed that this is a result of the domestication process. In this study we tested four captive fur seals in a two alternative object choice task in which subjects had to use one of the following experimenter-given cues to locate the food: (1) the experimenter pointed and gazed at one of the objects, (2) the experimenter pointed at only one of the objects, (3) the experimenter gazed at only one of the objects, (4) the experimenter glanced at only one of the objects, (5) the experimenter pointed and gazed at one of the objects but was sitting closer to one object than to the other, (6) the experimenter pointed only with the index finger at one of the objects, (7) the experimenter presented a replica of one of the objects. The fur seals were able to use cues which involved a fully exposed arm or a head direction, but failed to use glance only, the index finger pointing and the object replica cues. The results showed that a domestication process was not necessary to develop receptive skills to cues given by an experimenter. Instead, we hypothesize that close interactions with humans prior to testing enabled fur seals to uses ome gestural cues without formal training. We also analyzed the behavior of the seals depending on the level of difficulty of the task. Behavioral signs of hesitation increased with task difficulty. This suggests that the fur seals were sensitive to task difficulty. |
Address |
Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany. Marina.Scheumann@tiho-hannover.de |
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1435-9448 |
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PMID:15057598 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2536 |
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Author |
Anderson, J.R.; Kuroshima, H.; Kuwahata, H.; Fujita, K. |
Title |
Do squirrel monkeys (Saimiri sciureus) and capuchin monkeys (Cebus apella) predict that looking leads to touching? |
Type |
Journal Article |
Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
7 |
Issue |
3 |
Pages |
185-192 |
Keywords |
Animals; Association Learning; *Attention; Cebus/*psychology; Cognition; *Concept Formation; Cues; Fixation, Ocular; Humans; *Nonverbal Communication; Recognition (Psychology); Saimiri/*psychology; Social Behavior; Species Specificity |
Abstract |
Squirrel monkeys (Saimiri sciureus) and capuchin monkeys (Cebus apella) were tested using an expectancy violation procedure to assess whether they use an actor's gaze direction, signaled by congruent head and eye orientation, to predict subsequent behavior. The monkeys visually habituated to a repeated sequence in which the actor (a familiar human or a puppet) looked at an object and then picked it up, but they did not react strongly when the actor looked at an object but then picked up another object. Capuchin monkeys' responses in the puppet condition were slightly more suggestive of expectancy. There was no differential responding to congruent versus incongruent look-touch sequences when familiarization trials were omitted. The weak findings contrast with a strongly positive result previously reported for tamarin monkeys. Additional evidence is required before concluding that behavior prediction based on gaze cues typifies primates; other approaches for studying how they process attention cues are indicated. |
Address |
Department of Psychology, University of Stirling, FK9 4LA, Stirling, Scotland. jra1@stir.ac.uk |
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1435-9448 |
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PMID:15022054 |
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no |
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Equine Behaviour @ team @ |
Serial |
2540 |
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Author |
Parr, L.A. |
Title |
Perceptual biases for multimodal cues in chimpanzee (Pan troglodytes) affect recognition |
Type |
Journal Article |
Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
7 |
Issue |
3 |
Pages |
171-178 |
Keywords |
Acoustic Stimulation; *Animal Communication; Animals; Auditory Perception/physiology; Cues; Discrimination Learning/*physiology; Facial Expression; Female; Male; Pan troglodytes/*psychology; Perceptual Masking/*physiology; Photic Stimulation; Recognition (Psychology)/*physiology; Visual Perception/physiology; *Vocalization, Animal |
Abstract |
The ability of organisms to discriminate social signals, such as affective displays, using different sensory modalities is important for social communication. However, a major problem for understanding the evolution and integration of multimodal signals is determining how humans and animals attend to different sensory modalities, and these different modalities contribute to the perception and categorization of social signals. Using a matching-to-sample procedure, chimpanzees discriminated videos of conspecifics' facial expressions that contained only auditory or only visual cues by selecting one of two facial expression photographs that matched the expression category represented by the sample. Other videos were edited to contain incongruent sensory cues, i.e., visual features of one expression but auditory features of another. In these cases, subjects were free to select the expression that matched either the auditory or visual modality, whichever was more salient for that expression type. Results showed that chimpanzees were able to discriminate facial expressions using only auditory or visual cues, and when these modalities were mixed. However, in these latter trials, depending on the expression category, clear preferences for either the visual or auditory modality emerged. Pant-hoots and play faces were discriminated preferentially using the auditory modality, while screams were discriminated preferentially using the visual modality. Therefore, depending on the type of expressive display, the auditory and visual modalities were differentially salient in ways that appear consistent with the ethological importance of that display's social function. |
Address |
Division of Psychobiology, Yerkes National Primate Research Center, Emory University, 954 Gatewood Road, GA 30329, Atlanta, USA. parr@rmy.emory.edu |
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1435-9448 |
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PMID:14997361 |
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no |
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Equine Behaviour @ team @ |
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2544 |
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Author |
Klein, E.D.; Zentall, T.R. |
Title |
Imitation and affordance learning by pigeons (Columba livia) |
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Journal Article |
Year |
2003 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
Volume |
117 |
Issue |
4 |
Pages |
414-419 |
Keywords |
Animals; *Behavior, Animal; Columbidae; Cues; *Imitative Behavior; *Learning; Odors; Sound |
Abstract |
The bidirectional control procedure was used to determine whether pigeons (Columba livia) would imitate a demonstrator that pushed a sliding screen for food. One group of observers saw a trained demonstrator push a sliding screen door with its beak (imitation group), whereas 2 other groups watched the screen move independently (possibly learning how the environment works) with a conspecific either present (affordance learning with social facilitation) or absent (affordance learning alone). A 4th group could not see the screen being pushed (sound and odor control). Imitation was evidenced by the finding that pigeons that saw a demonstrator push the screen made a higher proportion of matching screen pushes than observers in 2 appropriate control conditions. Further, observers that watched a screen move without a demonstrator present made a significantly higher proportion of matching screen pushes than would be expected by chance. Thus, these pigeons were capable of affordance learning. |
Address |
Department of Psychology, University of Kentucky, Lexington, KY 40506-004, USA |
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0735-7036 |
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PMID:14717643 |
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refbase @ user @ |
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234 |
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Author |
Shapiro, A.D.; Janik, V.M.; Slater, P.J.B. |
Title |
A gray seal's (Halichoerus grypus) responses to experimenter-given pointing and directional cues |
Type |
Journal Article |
Year |
2003 |
Publication |
Journal of Comparative Psychology |
Abbreviated Journal |
J Comp Psychol |
Volume |
117 |
Issue |
4 |
Pages |
355-362 |
Keywords |
Animals; Behavior, Animal/*physiology; Cognition/physiology; Conditioning, Operant/physiology; *Cues; Eye Movements/physiology; Female; Seals, Earless |
Abstract |
A gray seal (Halichoerus grypus) was trained to touch a target on its left or right by responding to pointing signals. The authors then tested whether the seal would be able to generalize spontaneously to altered signals. It responded correctly to center pointing and head turning, center upper body turning, and off-center pointing but not to head turning and eye movements alone. The seal also responded correctly to brief ipsilateral and contralateral points from center and lateral positions. Pointing gestures did not cause the seal to select an object placed centrally behind it. Like many animals in similar studies, this gray seal probably did not understand the referential character of these gestures but rather used signal generalization and experience from initial operant conditioning to solve these tasks. |
Address |
School of Biology, University of St Andrews, St Andrews, Fife, United Kingdom |
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Washington, D.C. : 1983 |
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0735-7036 |
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PMID:14717636 |
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yes |
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Equine Behaviour @ team @ |
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4977 |
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Author |
Gácsi, M.; Miklósi, Á.; Varga, O.; Topál, J.; Csányi, V. |
Title |
Are readers of our face readers of our minds? Dogs (Canis familiaris) show situation-dependent recognition of human's attention |
Type |
Journal Article |
Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
7 |
Issue |
3 |
Pages |
144-153 |
Keywords |
Animals; Association Learning; *Attention; Bonding, Human-Pet; Cognition; *Concept Formation; Cues; Dogs/*psychology; *Facial Expression; Female; Humans; Male; *Nonverbal Communication; *Recognition (Psychology); Social Behavior |
Abstract |
The ability of animals to use behavioral/facial cues in detection of human attention has been widely investigated. In this test series we studied the ability of dogs to recognize human attention in different experimental situations (ball-fetching game, fetching objects on command, begging from humans). The attentional state of the humans was varied along two variables: (1) facing versus not facing the dog; (2) visible versus non-visible eyes. In the first set of experiments (fetching) the owners were told to take up different body positions (facing or not facing the dog) and to either cover or not cover their eyes with a blindfold. In the second set of experiments (begging) dogs had to choose between two eating humans based on either the visibility of the eyes or direction of the face. Our results show that the efficiency of dogs to discriminate between “attentive” and “inattentive” humans depended on the context of the test, but they could rely on the orientation of the body, the orientation of the head and the visibility of the eyes. With the exception of the fetching-game situation, they brought the object to the front of the human (even if he/she turned his/her back towards the dog), and preferentially begged from the facing (or seeing) human. There were also indications that dogs were sensitive to the visibility of the eyes because they showed increased hesitative behavior when approaching a blindfolded owner, and they also preferred to beg from the person with visible eyes. We conclude that dogs are able to rely on the same set of human facial cues for detection of attention, which form the behavioral basis of understanding attention in humans. Showing the ability of recognizing human attention across different situations dogs proved to be more flexible than chimpanzees investigated in similar circumstances. |
Address |
Comparative Ethology Research Group, Hungarian Academy of Sciences, Pazmany P. 1/c., 1117, Budapest, Hungary. gm.art@axelero.hu |
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1435-9448 |
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PMID:14669075 |
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Equine Behaviour @ team @ |
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2547 |
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