| Records |
| Author |
Vokey, J.R.; Rendall, D.; Tangen, J.M.; Parr, L.A.; de Waal, F.B.M. |
| Title |
Visual kin recognition and family resemblance in chimpanzees (Pan troglodytes) |
Type |
Journal Article |
| Year |
2004 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
| Volume |
118 |
Issue |
2 |
Pages |
194-199 |
| Keywords |
Animals; Female; Male; Pan troglodytes; Random Allocation; *Recognition (Psychology); *Visual Perception |
| Abstract |
The male-offspring biased visual kin recognition in chimpanzees (Pan troglodytes) reported by L. A. Parr and F. B. M. de Waal (1999) was replicated with human (Homo sapiens) participants and a principal components analysis (PCA) of pixel maps of the chimpanzee face photos. With the same original materials and methods, both humans and the PCA produced the same asymmetry in kin recognition as found with the chimpanzees. The PCA suggested that the asymmetry was a function of differences in the distribution of global characteristics associated with the framing of the faces in the son and daughter test sets. Eliminating potential framing biases, either by cropping the photos tightly to the faces or by rebalancing the recognition foils, eliminated the asymmetry but not human participants' ability to recognize chimpanzee kin. |
| Address |
Department of Psychology and Neuroscience, University of Lethbridge, Lethbridge, Alberta, Canada. vokey@uleth.ca |
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English |
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0735-7036 |
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| Notes |
PMID:15250806 |
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no |
| Call Number |
refbase @ user @ |
Serial |
171 |
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| Author |
de Waal, F.B.M. |
| Title |
Darwin's legacy and the study of primate visual communication |
Type |
Journal Article |
| Year |
2003 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
Ann N Y Acad Sci |
| Volume |
1000 |
Issue |
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Pages |
7-31 |
| Keywords |
Affect; Aggression/psychology; Animals; Culture; *Evolution; *Facial Expression; Gestures; Grooming; Humans; Laughter; *Nonverbal Communication; Primates/*physiology; Smiling; *Visual Perception |
| Abstract |
After Charles Darwin's The Expression of the Emotions in Man and Animals, published in 1872, we had to wait 60 years before the theme of animal expressions was picked up by another astute observer. In 1935, Nadezhda Ladygina-Kohts published a detailed comparison of the expressive behavior of a juvenile chimpanzee and of her own child. After Kohts, we had to wait until the 1960s for modern ethological analyses of primate facial and gestural communication. Again, the focus was on the chimpanzee, but ethograms on other primates appeared as well. Our understanding of the range of expressions in other primates is at present far more advanced than that in Darwin's time. A strong social component has been added: instead of focusing on the expressions per se, they are now often classified according to the social situations in which they typically occur. Initially, quantitative analyses were sequential (i.e., concerned with temporal associations between behavior patterns), and they avoided the language of emotions. I will discuss some of this early work, including my own on the communicative repertoire of the bonobo, a close relative of the chimpanzee (and ourselves). I will provide concrete examples to make the point that there is a much richer matrix of contexts possible than the common behavioral categories of aggression, sex, fear, play, and so on. Primate signaling is a form of negotiation, and previous classifications have ignored the specifics of what animals try to achieve with their exchanges. There is also increasing evidence for signal conventionalization in primates, especially the apes, in both captivity and the field. This process results in group-specific or “cultural” communication patterns. |
| Address |
Yerkes Primate Center, and Psychology Department, Emory University, Atlanta, Georgia 30322, USA. dewaal@emory.edu |
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| ISSN |
0077-8923 |
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PMID:14766618 |
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no |
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refbase @ user @ |
Serial |
177 |
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| Author |
Klein, E.D.; Bhatt, R.S.; Zentall, T.R. |
| Title |
Contrast and the justification of effort |
Type |
Journal Article |
| Year |
2005 |
Publication |
Psychonomic bulletin & review |
Abbreviated Journal |
Psychon Bull Rev |
| Volume |
12 |
Issue |
2 |
Pages |
335-339 |
| Keywords |
Awareness; *Cognition; *Discrimination (Psychology); Female; Humans; Male; Questionnaires; *Visual Perception |
| Abstract |
When humans are asked to evaluate rewards or outcomes that follow unpleasant (e.g., high-effort) events, they often assign higher value to that reward. This phenomenon has been referred to as cognitive dissonance or justification of effort. There is now evidence that a similar phenomenon can be found in nonhuman animals. When demonstrated in animals, however, it has been attributed to contrast between the unpleasant high effort and the conditioned stimulus for food. In the present experiment, we asked whether an analogous effect could be found in humans under conditions similar to those found in animals. Adult humans were trained to discriminate between shapes that followed a high-effort versus a low-effort response. In test, participants were found to prefer shapes that followed the high-effort response in training. These results suggest the possibility that contrast effects of the sort extensively studied in animals may play a role in cognitive dissonance and other related phenomena in humans. |
| Address |
University of Kentucky, Lexington, KY 40506-0044, USA |
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English |
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| ISSN |
1069-9384 |
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| Notes |
PMID:16082815 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
223 |
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| Author |
Zentall, T.R. |
| Title |
Configural/holistic processing or differential element versus compound similarity |
Type |
Journal Article |
| Year |
2005 |
Publication |
Animal cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
8 |
Issue |
2 |
Pages |
141-142 |
| Keywords |
Animals; *Chickens; Conditioning, Classical; *Discrimination Learning; Female; *Pattern Recognition, Visual; Photic Stimulation; *Visual Perception |
| Abstract |
Before accepting a configural or holistic account of visual perception, one should be sure that an analytic (elemental) account does not provide an equal or better explanation of the results. I suggest that when one forms a compound of a color and a line orientation with one element previously trained as an S+ and the other as an S-, the resulting transfer found will depend on the relative salience of the two elements, and most important, the similarity of the compound to each of the training stimuli. Thus, if a line orientation is placed on a colored background (a separable compound), it will appear more like the colored field used in training, and color will control responding. However, if the line itself is colored (an integral compound), the compound will appear more like the line used in training, and line orientation will control responding. Not only does this account do a better job of explaining the data but it is simpler and it is testable. |
| Address |
Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA. zentall@uky.edu |
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1435-9448 |
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| Notes |
PMID:15449103 |
Approved |
no |
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refbase @ user @ |
Serial |
229 |
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| Author |
Sutton, J.E.; Shettleworth, S.J. |
| Title |
Internal sense of direction and landmark use in pigeons (Columba livia) |
Type |
Journal Article |
| Year |
2005 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
| Volume |
119 |
Issue |
3 |
Pages |
273-284 |
| Keywords |
Animals; *Columbidae; Conflict (Psychology); *Cues; Discrimination Learning; Homing Behavior; *Intuition; *Orientation; *Space Perception; Transfer (Psychology); *Visual Perception |
| Abstract |
The relative importance of an internal sense of direction based on inertial cues and landmark piloting for small-scale navigation by White King pigeons (Columba livia) was investigated in an arena search task. Two groups of pigeons differed in whether they had access to visual cues outside the arena. In Experiment 1, pigeons were given experience with 2 different entrances and all pigeons transferred accurate searching to novel entrances. Explicit disorientation before entering did not affect accuracy. In Experiments 2-4, landmarks and inertial cues were put in conflict or tested 1 at a time. Pigeons tended to follow the landmarks in a conflict situation but could use an internal sense of direction to search when landmarks were unavailable. |
| Address |
Department of Psychology, University of Toronto, ON, Canada. jsutton7@uwo.ca |
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0735-7036 |
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| Notes |
PMID:16131256 |
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no |
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refbase @ user @ |
Serial |
360 |
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| Author |
Sekuler, A.B.; Lee, J.A.; Shettleworth, S.J. |
| Title |
Pigeons do not complete partly occluded figures |
Type |
Journal Article |
| Year |
1996 |
Publication |
Perception |
Abbreviated Journal |
Perception |
| Volume |
25 |
Issue |
9 |
Pages |
1109-1120 |
| Keywords |
Animals; *Columbidae; *Visual Perception |
| Abstract |
One of the most common obstacles to object perception is the fact that objects often occlude parts of themselves and parts of other objects. Perceptual completion has been studied extensively in humans, and researchers have shown that humans do complete partly occluded objects. In an effort to understand more about the mechanisms underlying completion, recent research has extended the study of perceptual completion to other mammalian species. Monkeys and mice also seem to complete two-dimensional representations of partly occluded objects. The present study addresses the question of whether this capacity generalizes to a nonmammalian species, the pigeon (Columba livia). The results point to a limit of the generalizability of perceptual completion: pigeons do not complete partly occluded figures. |
| Address |
Department of Psychology, University of Toronto, ON, Canada |
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English |
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| ISSN |
0301-0066 |
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| Notes |
PMID:8983050 |
Approved |
no |
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refbase @ user @ |
Serial |
377 |
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| Author |
Mrosovsky, N.; Shettleworth, S.J. |
| Title |
Further studies of the sea-finding mechanism in green turtle hatchlings |
Type |
Journal Article |
| Year |
1974 |
Publication |
Behaviour |
Abbreviated Journal |
Behaviour |
| Volume |
51 |
Issue |
3-4 |
Pages |
195-208 |
| Keywords |
Animals; *Animals, Newborn/physiology; Contact Lenses; Locomotion; *Orientation; Retina/physiology; *Turtles/physiology; Visual Fields; *Visual Perception; Water |
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0005-7959 |
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PMID:4447586 |
Approved |
no |
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refbase @ user @ |
Serial |
389 |
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| Author |
Fiset, S.; Leblanc, V. |
| Title |
Invisible displacement understanding in domestic dogs (Canis familiaris): the role of visual cues in search behavior |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
10 |
Issue |
2 |
Pages |
211-224 |
| Keywords |
Animals; Dogs/*physiology; Female; Male; *Space Perception; *Spatial Behavior; *Visual Perception |
| Abstract |
Recently, (Collier-Baker E, Davis JM, Suddendorf T (2004) J Comp Psychol 118:421-433) suggested that domestic dogs do not understand invisible displacements. In the present study, we further investigated the hypothesis that the search behavior of domestic dogs in invisible displacements is guided by various visual cues inherent to the task rather than by mental representation of an object's past trajectory. Specifically, we examined the role of the experimenter as a function of the final position of the displacement device in the search behavior of domestic dogs. Visible and invisible displacement problems were administered to dogs (N = 11) under two conditions. In the Visible-experimenter condition, the experimenter was visible whereas in the Concealed-experimenter condition, the experimenter was visibly occluded behind a large rigid barrier. Our data supported the conclusion that dogs do not understand invisible displacements but primarily search as a function of the final position of the displacement device and, to a lesser extent, the position of the experimenter. |
| Address |
Secteur Sciences Humaines, Universite de Moncton, Campus d'Edmundston, Edmundston, New-Brunswick, E3V 2S8, Canada. sfiset@umce.ca |
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1435-9448 |
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| Notes |
PMID:17165041 |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2430 |
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| Author |
Collier-Baker, E.; Davis, J.M.; Nielsen, M.; Suddendorf, T. |
| Title |
Do chimpanzees (Pan troglodytes) understand single invisible displacement? |
Type |
Journal Article |
| Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
9 |
Issue |
1 |
Pages |
55-61 |
| Keywords |
Animals; Behavior, Animal; *Cognition; Male; Pan troglodytes/*psychology; *Space Perception; *Spatial Behavior; Task Performance and Analysis; *Visual Perception |
| Abstract |
Previous research suggests that chimpanzees understand single invisible displacement. However, this Piagetian task may be solvable through the use of simple search strategies rather than through mentally representing the past trajectory of an object. Four control conditions were thus administered to two chimpanzees in order to separate associative search strategies from performance based on mental representation. Strategies involving experimenter cue-use, search at the last or first box visited by the displacement device, and search at boxes adjacent to the displacement device were systematically controlled for. Chimpanzees showed no indications of utilizing these simple strategies, suggesting that their capacity to mentally represent single invisible displacements is comparable to that of 18-24-month-old children. |
| Address |
Early Cognitive Development Unit, School of Psychology, University of Queensland, Brisbane, Queensland 4072, Australia. e.collier-baker@psy.uq.edu.au |
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1435-9448 |
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| Notes |
PMID:16163481 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2482 |
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| Author |
Fiset, S.; Dore, F.Y. |
| Title |
Duration of cats' (Felis catus) working memory for disappearing objects |
Type |
Journal Article |
| Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
9 |
Issue |
1 |
Pages |
62-70 |
| Keywords |
Animals; Cats/*psychology; *Exploratory Behavior; Female; Male; *Memory; Random Allocation; *Visual Perception |
| Abstract |
This study explored the duration of cats' working memory for hidden objects. Twenty-four cats were equally divided into four groups, which differed according to the type of visual cues displayed on and/or around the hiding boxes. During eight sessions, the four groups of cats were trained to locate a desirable object hidden behind one of the four boxes placed in front of them. Then, the cats were tested with retention intervals of 0, 10, 30 and 60 s. Results revealed no significant differences between the groups during training or testing. In testing, the cats' accuracy to locate the hidden object rapidly declined between 0 and 30 s but remained higher than chance with delays of up to 60 s. The analysis of errors also indicated that the cats searched as a function of the proximity of the target box and were not subjected to intertrial proactive interference. This experiment reveals that the duration of cats' working memory for disappearing objects is limited and the visual cues displayed on and/or around the boxes do not help the cats to memorize a hiding position. In discussion, we explore why the duration of cats' working memory for disappearing objects rapidly declined and compare these finding with those from domestic dogs. The irrelevance of visual cues displayed on and around the hiding boxes on cats' retention capacity is also discussed. |
| Address |
Secteur Sciences Humaines, Universite de Moncton, Campus d'Edmundston, Edmundston, New-Brunswick,, Canada, E3V 2S8. sfiset@umce.ca |
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1435-9448 |
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| Notes |
PMID:16133631 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2485 |
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