| Records |
| Author |
Washburn, D.A.; Smith, J.D.; Shields, W.E. |
| Title |
Rhesus monkeys (Macaca mulatta) immediately generalize the uncertain response |
Type |
Journal Article |
Year  |
2006 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
32 |
Issue |
2 |
Pages |
185-189 |
| Keywords |
Adaptation, Psychological; Animals; *Cognition; *Discrimination Learning; *Generalization (Psychology); Macaca mulatta/*psychology; Male; *Uncertainty |
| Abstract |
Rhesus monkeys (Macaca mulatta) have learned, like humans, to use an uncertain response adaptively under test conditions that create uncertainty, suggesting a metacognitive process by which human and nonhuman primates may monitor their confidence and alter their behavior accordingly. In this study, 4 rhesus monkeys generalized their use of the uncertain response, without additional training, to 2 familiar tasks (2-choice discrimination learning and mirror-image matching to sample) that predictably and demonstrably produce uncertainty. The monkeys were significantly less likely to use the uncertain response on trials in which the answer might be known. These results indicate that monkeys, like humans, know when they do not know and that they can learn to use a symbol as a generalized means for indicating their uncertainty. |
| Address |
Department of Psychology, Georgia State University, Atlanta, 30303, USA. dwashhburn@gsu.edu |
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English |
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| ISSN |
0097-7403 |
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| Notes |
PMID:16634662 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2760 |
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| Author |
Brannon, E.M.; Cantlon, J.F.; Terrace, H.S. |
| Title |
The role of reference points in ordinal numerical comparisons by rhesus macaques (Macaca mulatta) |
Type |
Journal Article |
| Year |
2006 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
32 |
Issue |
2 |
Pages |
120-134 |
| Keywords |
Animals; *Cognition; *Discrimination (Psychology); *Generalization (Psychology); Macaca mulatta/*psychology; Male; Mathematics; *Pattern Recognition, Visual |
| Abstract |
Two experiments examined ordinal numerical knowledge in rhesus macaques (Macaca mulatta). Experiment 1 replicated the finding (E. M. Brannon & H. S. Terrace, 2000) that monkeys trained to respond in descending numerical order (4-->3-->2-->1) did not generalize the descending rule to the novel values 5-9 in contrast to monkeys trained to respond in ascending order. Experiment 2 examined whether the failure to generalize a descending rule was due to the direction of the training sequence or to the specific values used in the training sequence. Results implicated 3 factors that characterize a monkey's numerical comparison process: Weber's law, knowledge of ordinal direction, and a comparison of each value in a test pair with the reference point established by the first value of the training sequence. |
| Address |
Center for Cognitive Neuroscience and Department of Psychological and Brain Sciences, Duke University, Durham, NC 27708, USA. brannon@duke.edu |
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0097-7403 |
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| Notes |
PMID:16634655 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2761 |
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| Author |
Beran, M.J.; Smith, J.D.; Redford, J.S.; Washburn, D.A. |
| Title |
Rhesus macaques (Macaca mulatta) monitor uncertainty during numerosity judgments |
Type |
Journal Article |
| Year |
2006 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
32 |
Issue |
2 |
Pages |
111-119 |
| Keywords |
Animals; *Cognition; *Judgment; Macaca mulatta/*psychology; Male; Mathematics; *Pattern Recognition, Visual; *Uncertainty |
| Abstract |
Two rhesus macaques (Macaca mulatta) judged arrays of dots on a computer screen as having more or fewer dots than a center value that was never presented in trials. After learning a center value, monkeys were given an uncertainty response that let them decline to make the numerosity judgment on that trial. Across center values (3-7), errors occurred most often for sets adjacent in numerosity to the center value. The monkeys also used the uncertainty response most frequently on these difficult trials. A 2nd experiment showed that monkeys' responses reflected numerical magnitude and not the surface-area illumination of the displays. This research shows that monkeys' uncertainty-monitoring capacity extends to the domain of numerical cognition. It also shows monkeys' use of the purest uncertainty response possible, uncontaminated by any secondary motivator. |
| Address |
Language Research Center, Georgia State University, Atlanta, 30302, USA. mjberan@yahoo.com |
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0097-7403 |
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| Notes |
PMID:16634654 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2762 |
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| Author |
Katz, J.S.; Wright, A.A. |
| Title |
Same/different abstract-concept learning by pigeons |
Type |
Journal Article |
| Year |
2006 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
32 |
Issue |
1 |
Pages |
80-86 |
| Keywords |
Animals; Behavior, Animal; *Cognition; Columbidae; *Concept Formation; Conditioning (Psychology); *Learning |
| Abstract |
Eight pigeons were trained and tested in a simultaneous same/different task. After pecking an upper picture, they pecked a lower picture to indicate same or a white rectangle to indicate different. Increases in the training set size from 8 to 1,024 items produced improved transfer from 51.3% to 84.6%. This is the first evidence that pigeons can perform a two-item same/different task as accurately with novel items as training items and both above 80% correct. Fixed-set control groups ruled out training time or transfer testing as producing the high level of abstract-concept learning. Comparisons with similar experiments with rhesus and capuchin monkeys showed that the ability to learn the same/different abstract concept was similar but that pigeons require more training exemplars. |
| Address |
Department of Psychology, Auburn University, Auburn, AL 36849, USA. katzjef@auburn.edu |
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English |
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0097-7403 |
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| Notes |
PMID:16435967 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2764 |
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| Author |
Pennisi, E. |
| Title |
Animal cognition. Man's best friend(s) reveal the possible roots of social intelligence |
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| Year |
2006 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
312 |
Issue |
5781 |
Pages |
1737 |
| Keywords |
Animals; *Cognition; Comprehension; Cooperative Behavior; Cues; Dogs/*psychology; *Evolution; *Intelligence; *Social Behavior |
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English |
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Edition |
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| ISSN |
1095-9203 |
ISBN |
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| Notes |
PMID:16794056 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2835 |
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| Author |
Pennisi, E. |
| Title |
Animal cognition. Social animals prove their smarts |
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| Year |
2006 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
312 |
Issue |
5781 |
Pages |
1734-1738 |
| Keywords |
Animals; *Behavior, Animal; *Birds; *Cognition; Comprehension; Cues; Food; Hominidae/*psychology; *Intelligence; Learning; Memory; *Social Behavior |
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English |
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1095-9203 |
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| Notes |
PMID:16794055 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2836 |
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| Author |
Reznikova, Z.I. |
| Title |
[The study of tool use as the way for general estimation of cognitive abilities in animals] |
Type |
Journal Article |
| Year |
2006 |
Publication |
Zhurnal Obshchei Biologii |
Abbreviated Journal |
Zh Obshch Biol |
| Volume |
67 |
Issue |
1 |
Pages |
3-22 |
| Keywords |
Adaptation, Psychological; Animals; *Cognition; Learning; Pattern Recognition, Physiological; Species Specificity |
| Abstract |
Investigation of tool use is an effective way to determine cognitive abilities of animals. This approach raises hypotheses, which delineate limits of animal's competence in understanding of objects properties and interrelations and the influence of individual and social experience on their behaviour. On the basis of brief review of different models of manipulation with objects and tools manufacturing (detaching, subtracting and reshaping) by various animals (from elephants to ants) in natural conditions the experimental data concerning tool usage was considered. Tool behaviour of anumals could be observed rarely and its distribution among different taxons is rather odd. Recent studies have revealed that some species (for instance, bonobos and tamarins) which didn't manipulate tools in wild life appears to be an advanced tool users and even manufacturers in laboratory. Experimental studies of animals tool use include investigation of their ability to use objects physical properties, to categorize objects involved in tool activity by its functional properties, to take forces affecting objects into account, as well as their capacity of planning their actions. The crucial question is whether animals can abstract general principles of relations between objects regardless of the exact circumstances, or they develop specific associations between concerete things and situations. Effectiveness of laboratory methods is estimated in the review basing on comparative studies of tool behaviour, such as “support problem”, “stick problem”, “tube- and tube-trap problem”, and “reserve tube problem”. Levels of social learning, the role of imprinting, and species-specific predisposition to formation of specific domains are discussed. Experimental investigation of tool use allows estimation of the individuals' intelligence in populations. A hypothesis suggesting that strong predisposition to formation of specific associations can serve as a driving force and at the same time as obstacle to animals' activity is discussed. In several “technically gifted” species (such as woodpecker finches, New Caledonian crows, and chimpanzees) tool use seems to be guided by a rapid process of trial and error learning. Individuals that are predisposed to learn specific connections do this too quickly and thus become enslaved by stereotypic solutions of raising problems. |
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Russian |
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0044-4596 |
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| Notes |
PMID:16521567 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2857 |
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| Author |
Byrne, R.W.; Bates, L.A. |
| Title |
Why are animals cognitive? |
Type |
Journal Article |
| Year |
2006 |
Publication |
Current Biology : CB |
Abbreviated Journal |
Curr Biol |
| Volume |
16 |
Issue |
12 |
Pages |
R445-8 |
| Keywords |
Animals; Arachnida/physiology; *Association Learning; *Behavior, Animal; *Cognition; Cooperative Behavior; Falconiformes/physiology; Pan troglodytes/physiology; Parrots/physiology; Passeriformes/physiology |
| Abstract |
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| Address |
Centre for Social Learning and Cognitive Evolution, and Scottish Primate Research Group, School of Psychology, University of St Andrews, Fife KY16 9JP, Scotland |
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English |
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0960-9822 |
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| Notes |
PMID:16781995 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
4708 |
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| Author |
Zucca, P.; Milos, N.; Vallortigara, G. |
| Title |
Piagetian object permanence and its development in Eurasian jays (Garrulus glandarius) |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
10 |
Issue |
2 |
Pages |
243-258 |
| Keywords |
Animals; *Behavior, Animal; Birds/*physiology; *Cognition; *Cues |
| Abstract |
Object permanence in Eurasian jays (Garrulus glandarius) was investigated using a complete version of the Uzgiris and Hunt scale 1. Nine hand-raised jays were studied, divided into two groups according to their different developmental stages (experiment 1, older jays: 2-3 months old, n = 4; experiment 2, younger jays: 15 days old, n = 5). In the first experiment, we investigated whether older jays could achieve piagetian stage 6 of object permanence. Tasks were administered in a fixed sequence (1-15) according to the protocols used in other avian species. The aim of the second experiment was to check whether testing very young jays before their development of “neophobia” could influence the achievement times of piagetian stages. Furthermore, in this experiment tasks were administered randomly to investigate whether the jays' achievement of stage 6 follows a fixed sequence related to the development of specific cognitive abilities. All jays tested in experiments 1 and 2 fully achieved piagetian stage 6 and no “A not B” errors were observed. Performance on visible displacement tasks was better than performance on invisible ones. The results of experiment 2 show that “neophobia” affected the response of jays in terms of achievement times; the older jays in experiment 1 took longer to pass all the tasks when compared with the younger, less neophobic, jays in experiment 2. With regard to the achieving order, jays followed a fixed sequence of acquisition in experiment 2, even if tasks were administered randomly, with the exception of one subject. The results of these experiments support the idea that piagetian stages of cognitive development exist in avian species and that they progress through relatively fixed sequences. |
| Address |
Department of Psychology, Laboratory of Animal Cognition and Comparative Neuroscience, Via S. Anastasio 12, 34100, Trieste, Italy. zucca@units.it |
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1435-9448 |
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| Notes |
PMID:17242935 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2423 |
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| Author |
Beran, M.J. |
| Title |
Rhesus monkeys (Macaca mulatta) succeed on a computerized test designed to assess conservation of discrete quantity |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
10 |
Issue |
1 |
Pages |
37-45 |
| Keywords |
Animals; *Cognition; *Judgment; Macaca mulatta/*psychology; Male; Mathematics; *Pattern Recognition, Visual; Uncertainty |
| Abstract |
Conservation of quantity occurs through recognition that changes in the physical arrangement of a set of items do not change the quantity of items in that set. Rhesus monkeys (Macaca mulatta) were presented with a computerized quantity judgment task. Monkeys were rewarded for selecting the greater quantity of items in one of two horizontal arrays of items on the screen. On some trials, after a correct selection, no reward was given but one of the arrays was manipulated. In some cases, this manipulation involved moving items closer together or farther apart to change the physical arrangement of the array without changing the quantity of items in the array. In other cases, additional items were added to the initially smaller array so that it became quantitatively larger. Monkeys then made another selection from the two rows of items. Monkeys were sensitive to these manipulations, changing their selections when the number of items in the rows changed but not when the arrangement only was changed. Therefore, monkeys responded on the basis of the quantity of items, and they were not distracted by non-quantitative manipulations of the sets. |
| Address |
Language Research Center, Georgia State University, 3401 Panthersville Road, Decatur, GA 30034, USA. mjberan@yahoo.com |
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1435-9448 |
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| Notes |
PMID:16868737 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2455 |
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