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Author |
Paukner, A.; Anderson, J.R.; Fujita, K. |
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Title |
Redundant food searches by capuchin monkeys (Cebus apella): a failure of metacognition? |
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Journal Article |
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Year |
2006 |
Publication |
Animal cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
9 |
Issue |
2 |
Pages |
110-117 |
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Keywords |
Animals; *Appetitive Behavior; Cebus; *Concept Formation; Female; Male; Pattern Recognition, Visual; *Problem Solving; *Visual Perception |
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Abstract |
This study investigated capuchin monkeys' understanding of their own visual search behavior as a means to gather information. Five monkeys were presented with three tubes that could be visually searched to determine the location of a bait. The bait's visibility was experimentally manipulated, and the monkeys' spontaneous visual searches before tube selection were analyzed. In Experiment 1, three monkeys selected the baited tube significantly above chance; however, the monkeys also searched transparent tubes. In Experiment 2, a bent tube in which food was never visible was introduced. When the bent tube was baited, the monkeys failed to deduce the bait location and responded randomly. They also continued to look into the bent tube despite not gaining any pertinent information from it. The capuchin monkeys' behavior contrasts with the efficient employment of visual search behavior reported in humans, apes and macaques. This difference is consistent with species-related variations in metacognitive abilities, although other explanations are also possible. |
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Department of Psychology, University of Stirling, Stirling, FK9 4LA, UK. ap14@stir.ac.uk |
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1435-9448 |
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PMID:16184375 |
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no |
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Call Number |
Admin @ knut @ |
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15 |
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Author |
Pepperberg, I.M. |
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Title |
Grey parrot numerical competence: a review |
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Journal Article |
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Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
9 |
Issue |
4 |
Pages |
377-391 |
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Keywords |
Animals; *Behavior, Animal; *Comprehension; *Concept Formation; *Mathematics; *Parrots |
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Abstract |
The extent to which humans and nonhumans share numerical competency is a matter of debate. Some researchers argue that nonhumans, lacking human language, possess only a simple understanding of small quantities, generally less than four. Animals that have, however, received some training in human communication systems might demonstrate abilities intermediate between those of untrained nonhumans and humans. Here I review data for a Grey parrot (Psittacus erithacus) that has been shown to quantify sets of up to and including six items (including heterogeneous subsets) using vocal English labels, to comprehend these labels fully, and to have a zero-like concept. Recent research demonstrates that he can also sum small quantities. His success shows that he understands number symbols as abstract representations of real-world collections, and that his sense of number compares favorably to that of chimpanzees and young human children. |
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Department of Psychology, Brandeis University, Waltham, MA 02454, USA |
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1435-9448 |
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PMID:16909236 |
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no |
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Call Number |
Equine Behaviour @ team @ |
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2448 |
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Author |
Pepperberg, I.M.; Brezinsky, M.V. |
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Title |
Acquisition of a relative class concept by an African gray parrot (Psittacus erithacus): discriminations based on relative size |
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Journal Article |
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Year |
1991 |
Publication |
Journal of Comparative Psychology |
Abbreviated Journal |
J Comp Psychol |
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Volume |
105 |
Issue |
3 |
Pages |
286-294 |
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Keywords |
Animals; Aptitude; *Concept Formation; *Discrimination Learning; Form Perception; Male; Mental Recall; *Parrots; *Size Perception; Vocalization, Animal |
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Abstract |
We report that an African gray parrot (Psittacus erithacus), Alex, responds to stimuli on a relative basis. Previous laboratory studies with artificial stimuli (such as pure tones) suggest that birds make relational responses as a secondary strategy, only after they have acquired information about the absolute values of the stimuli. Alex, however, after learning to respond to a small set of exemplars on the basis of relative size, transferred this behavior to novel situations that did not provide specific information about the absolute values of the stimuli. He responded to vocal questions about which was the larger or smaller exemplar by vocally labeling its color or material, and he responded “none” if the exemplars did not differ in size. His overall accuracy was 78.7%. |
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Northwestern University |
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Washington, D.C. : 1983 |
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0735-7036 |
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Notes |
PMID:1935007 |
Approved |
yes |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3610 |
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Author |
Rilling, M.E.; Neiworth, J.J. |
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Title |
How animals use images |
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Journal Article |
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Year |
1991 |
Publication |
Science Progress |
Abbreviated Journal |
Sci Prog |
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Volume |
75 |
Issue |
298 Pt 3-4 |
Pages |
439-452 |
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Keywords |
Animals; Association Learning; Columbidae; *Concept Formation; *Imagination; *Mental Recall; Motion Perception; Problem Solving; *Thinking; *Visual Perception |
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Abstract |
Animal cognition is a field within experimental psychology in which cognitive processes formerly studied exclusively with people have been demonstrated in animals. Evidence for imagery in the pigeon emerges from the experiments described here. The pigeon's task was to discriminate, by pecking the appropriate choice key, between a clock hand presented on a video screen that rotated clockwise with constant velocity from a clock hand that violated constant velocity. Imagery was defined by trials on which the line rotated from 12.00 o'clock to 3.00 o'clock, then disappeared during a delay, and reappeared at a final stop location beyond 3.00 o'clock. After acquisition of a discrimination with final stop locations at 3.00 o'clock and 6.00 o'clock, the evidence for imagery was the accurate responding of the pigeons to novel locations at 4.00 o'clock and 7.00 o'clock. Pigeons display evidence of imagery by transforming a representation of movement that includes a series of intermediate steps which accurately represent the location of a moving stimulus after it disappears. |
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Department of Psychology, Michigan State University, East Lansing 48824 |
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0036-8504 |
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Notes |
PMID:1842858 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2831 |
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Author |
Zentall, T.R.; Galizio, M.; Critchfied, T.S. |
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Title |
Categorization, concept learning, and behavior analysis: an introduction |
Type |
Journal Article |
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Year |
2002 |
Publication |
Journal of the experimental analysis of behavior |
Abbreviated Journal |
J Exp Anal Behav |
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Volume |
78 |
Issue |
3 |
Pages |
237-248 |
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Keywords |
Animals; Association Learning; *Concept Formation; *Discrimination Learning; Humans; Language |
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Abstract |
Categorization and concept learning encompass some of the most important aspects of behavior, but historically they have not been central topics in the experimental analysis of behavior. To introduce this special issue of the Journal of the Experimental Analysis of Behavior (JEAB), we define key terms; distinguish between the study of concepts and the study of concept learning; describe three types of concept learning characterized by the stimulus classes they yield; and briefly identify several other themes (e.g., quantitative modeling and ties to language) that appear in the literature. As the special issue demonstrates, a surprising amount and diversity of work is being conducted that either represents a behavior-analytic perspective or can inform or constructively challenge this perspective. |
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Department of Psychology, University of Kentucky, Lexington 40506, USA. zentall@pop.uky.edu |
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0022-5002 |
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PMID:12507002 |
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Call Number |
refbase @ user @ |
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236 |
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