Records |
Author |
Williams, N. |
Title |
Evolutionary psychologists look for roots of cognition |
Type |
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Year |
1997 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
Volume |
275 |
Issue |
5296 |
Pages |
29-30 |
Keywords |
Animals; *Behavior, Animal; Birds; *Cognition; *Evolution; Female; Humans; Macaca mulatta/psychology; Male; Memory; Reward; *Social Sciences |
Abstract |
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English |
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Edition |
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ISSN |
0036-8075 |
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Notes |
PMID:8999531 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2845 |
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Author |
de Waal, F.B.; Berger, M.L. |
Title |
Payment for labour in monkeys |
Type |
Journal Article |
Year |
2000 |
Publication |
Nature |
Abbreviated Journal |
Nature |
Volume |
404 |
Issue |
6778 |
Pages |
563 |
Keywords |
Animals; Cebus/*physiology; *Cooperative Behavior; Evolution; *Feeding Behavior; Female; Male; Reward |
Abstract |
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Address |
Living Links, Yerkes Regional Primate Research Center, and Department of Psychology, Emory University, Atlanta, Georgia 30329, USA. dewaal@emory.edu |
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English |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0028-0836 |
ISBN |
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Conference |
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Notes |
PMID:10766228 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
190 |
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Author |
Clement, T.S.; Feltus, J.R.; Kaiser, D.H.; Zentall, T.R. |
Title |
“Work ethic” in pigeons: reward value is directly related to the effort or time required to obtain the reward |
Type |
Journal Article |
Year |
2000 |
Publication |
Psychonomic bulletin & review |
Abbreviated Journal |
Psychon Bull Rev |
Volume |
7 |
Issue |
1 |
Pages |
100-106 |
Keywords |
Animals; Behavior, Animal/*physiology; Cognition/physiology; Columbidae; Discrimination Learning/physiology; Female; Male; Reinforcement (Psychology); *Reward; Time Factors |
Abstract |
Stimuli associated with less effort or with shorter delays to reinforcement are generally preferred over those associated with greater effort or longer delays to reinforcement. However, the opposite appears to be true of stimuli that follow greater effort or longer delays. In training, a simple simultaneous discrimination followed a single peck to an initial stimulus (S+FR1 S-FR1) and a different simple simultaneous discrimination followed 20 pecks to the initial stimulus (S+FR20 S-FR20). On test trials, pigeons preferred S+FR20 over S+FR1 and S-FR20 over S-FR1. These data support the view that the state of the animal immediately prior to presentation of the discrimination affects the value of the reinforcement that follows it. This contrast effect is analogous to effects that when they occur in humans have been attributed to more complex cognitive and social factors. |
Address |
University of Kentucky, Lexington, USA |
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English |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1069-9384 |
ISBN |
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Medium |
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Area |
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Conference |
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Notes |
PMID:10780022 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
248 |
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Author |
Pepperberg, I.M. |
Title |
In search of king Solomon's ring: cognitive and communicative studies of Grey parrots (Psittacus erithacus) |
Type |
Journal Article |
Year |
2002 |
Publication |
Brain, behavior and evolution |
Abbreviated Journal |
Brain Behav Evol |
Volume |
59 |
Issue |
1-2 |
Pages |
54-67 |
Keywords |
*Animal Communication; Animals; Attention/physiology; Cognition/*physiology; Cues; Form Perception/physiology; Humans; Intelligence; Learning/physiology; Male; Models, Psychological; Parrots/*physiology; Psychomotor Performance/physiology; Reward; Social Behavior |
Abstract |
During the past 24 years, I have used a modeling technique (M/R procedure) to train Grey parrots to use an allospecific code (English speech) referentially; I then use the code to test their cognitive abilities. The oldest bird, Alex, labels more than 50 different objects, 7 colors, 5 shapes, quantities to 6, 3 categories (color, shape, material) and uses 'no', 'come here', wanna go X' and 'want Y' (X and Y are appropriate location or item labels). He combines labels to identify, request, comment upon or refuse more than 100 items and to alter his environment. He processes queries to judge category, relative size, quantity, presence or absence of similarity/difference in attributes, and show label comprehension. He semantically separates labeling from requesting. He thus exhibits capacities once presumed limited to humans or nonhuman primates. Studies on this and other Greys show that parrots given training that lacks some aspect of input present in M/R protocols (reference, functionality, social interaction) fail to acquire referential English speech. Examining how input affects the extent to which parrots acquire an allospecific code may elucidate mechanisms of other forms of exceptional learning: learning unlikely in the normal course of development but that can occur under certain conditions. |
Address |
The MIT Media Lab, Cambridge, Mass. 02139, USA. impepper@media.mit.edu |
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English |
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Edition |
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ISSN |
0006-8977 |
ISBN |
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Conference |
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Notes |
PMID:12097860 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
579 |
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Author |
Pollmann, U. |
Title |
[Keeping of horses in circus and show businesses] |
Type |
Journal Article |
Year |
2002 |
Publication |
DTW. Deutsche Tierarztliche Wochenschrift |
Abbreviated Journal |
Dtsch Tierarztl Wochenschr |
Volume |
109 |
Issue |
3 |
Pages |
126-129 |
Keywords |
Animal Husbandry/*methods; *Animal Welfare; Animals; Behavior, Animal; *Horses; *Housing, Animal; Humans; Reward |
Abstract |
The conditions under which horses are kept and the performance of acts in the circus ring may give rise to animal protection-relevant aspects for circus and show horses. A number of intolerable conditions under which horses are kept and procedures adopted for the work with circus and show horses are described. In addition, attention is drawn to monitoring methods capable of exposing the deplorable shortcomings of these businesses. |
Address |
Fachbereich Ethologie und Tierschutz des Chemischen und Veterinaruntersuchungsamtes Freiburg. Ursula.Pollmann@cvuafr.bwl.de |
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Language |
German |
Summary Language |
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Original Title |
Pferdehaltung in Zirkus- und Schaustellerbetrieben |
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Edition |
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ISSN |
0341-6593 |
ISBN |
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Medium |
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Conference |
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Notes |
PMID:11963363 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
1914 |
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Author |
Brosnan, S.F.; De Waal, F.B.M. |
Title |
Monkeys reject unequal pay |
Type |
Journal Article |
Year |
2003 |
Publication |
Nature |
Abbreviated Journal |
Nature |
Volume |
425 |
Issue |
6955 |
Pages |
297-299 |
Keywords |
Aging; Animals; Cebus/*psychology; Choice Behavior; *Cooperative Behavior; Female; Male; *Reward; Social Justice |
Abstract |
During the evolution of cooperation it may have become critical for individuals to compare their own efforts and pay-offs with those of others. Negative reactions may occur when expectations are violated. One theory proposes that aversion to inequity can explain human cooperation within the bounds of the rational choice model, and may in fact be more inclusive than previous explanations. Although there exists substantial cultural variation in its particulars, this 'sense of fairness' is probably a human universal that has been shown to prevail in a wide variety of circumstances. However, we are not the only cooperative animals, hence inequity aversion may not be uniquely human. Many highly cooperative nonhuman species seem guided by a set of expectations about the outcome of cooperation and the division of resources. Here we demonstrate that a nonhuman primate, the brown capuchin monkey (Cebus apella), responds negatively to unequal reward distribution in exchanges with a human experimenter. Monkeys refused to participate if they witnessed a conspecific obtain a more attractive reward for equal effort, an effect amplified if the partner received such a reward without any effort at all. These reactions support an early evolutionary origin of inequity aversion. |
Address |
Living Links, Yerkes National Primate Research Center, Emory University, Atlanta, Georgia 30329, USA. sbrosna@emory.edu |
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ISSN |
1476-4687 |
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Notes |
PMID:13679918 |
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no |
Call Number |
refbase @ user @ |
Serial |
179 |
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Author |
Sole, L.M.; Shettleworth, S.J.; Bennett, P.J. |
Title |
Uncertainty in pigeons |
Type |
Journal Article |
Year |
2003 |
Publication |
Psychonomic bulletin & review |
Abbreviated Journal |
Psychon Bull Rev |
Volume |
10 |
Issue |
3 |
Pages |
738-745 |
Keywords |
Animals; Behavior, Animal; Columbidae; *Decision Making; Reinforcement (Psychology); Reward; Transfer (Psychology); Visual Perception |
Abstract |
Pigeons classified a display of illuminated pixels on a touchscreen as sparse or dense. Correct responses were reinforced with six food pellets; incorrect responses were unreinforced. On some trials an uncertain response option was available. Pecking it was always reinforced with an intermediate number of pellets. Like monkeys and people in related experiments, the birds chose the uncertain response most often when the stimulus presented was difficult to classify correctly, but in other respects their behavior was not functionally similar to human behavior based on conscious uncertainty or to the behavior of monkeys in comparable experiments. Our data were well described by a signal detection model that assumed that the birds were maximizing perceived reward in a consistent way across all the experimental conditions. |
Address |
University of Toronto, Toronto, Ontario, Canada |
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English |
Summary Language |
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Series Editor |
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ISSN |
1069-9384 |
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Notes |
PMID:14620372 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
366 |
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Author |
Johnson, D.D.P.; Stopka, P.; Knights, S. |
Title |
Sociology: The puzzle of human cooperation |
Type |
Journal Article |
Year |
2003 |
Publication |
Nature |
Abbreviated Journal |
Nature |
Volume |
421 |
Issue |
6926 |
Pages |
911-2; discussion 912 |
Keywords |
Altruism; *Cooperative Behavior; Evolution; Humans; *Models, Biological; Punishment; Reward; Risk |
Abstract |
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Address |
Olin Institute for Strategic Studies, Harvard University, Cambridge, Massachusetts 02138, USA. dominic@post.harvard.edu |
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English |
Summary Language |
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Series Editor |
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Edition |
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ISSN |
0028-0836 |
ISBN |
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Notes |
PMID:12606989 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
467 |
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Author |
Brosnan, S.F.; de Waal, F.B.M. |
Title |
Socially learned preferences for differentially rewarded tokens in the brown capuchin monkey (Cebus apella) |
Type |
Journal Article |
Year |
2004 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
Volume |
118 |
Issue |
2 |
Pages |
133-139 |
Keywords |
Animals; Behavior, Animal; Cebus; *Choice Behavior; Female; *Learning; Male; *Reward; *Social Behavior |
Abstract |
Social learning is assumed to underlie traditions, yet evidence indicating social learning in capuchin monkeys (Cebus apella), which exhibit traditions, is sparse. The authors tested capuchins for their ability to learn the value of novel tokens using a previously familiar token-exchange economy. Capuchins change their preferences in favor of a token worth a high-value food reward after watching a conspecific model exchange 2 differentially rewarded tokens, yet they fail to develop a similar preference after watching tokens paired with foods in the absence of a conspecific model. They also fail to learn that the value of familiar tokens has changed. Information about token value is available in all situations, but capuchins seem to pay more attention in a social situation involving novel tokens. |
Address |
Living Links Center, Yerkes National Primate Research Center, and Graduate Division of Biological and Biomedical Sciences, Emory University, Atlanta, GA 30329, USA. sbrosna@emory.edu |
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English |
Summary Language |
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Series Editor |
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Series Issue |
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Edition |
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ISSN |
0735-7036 |
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Conference |
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Notes |
PMID:15250800 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
173 |
Permanent link to this record |
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Author |
Friedrich, A.M.; Zentall, T.R. |
Title |
Pigeons shift their preference toward locations of food that take more effort to obtain |
Type |
Journal Article |
Year |
2004 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
Volume |
67 |
Issue |
3 |
Pages |
405-415 |
Keywords |
Animals; *Behavior, Animal; *Choice Behavior; Columbidae; *Exertion; *Feeding Behavior; Reward |
Abstract |
Although animals typically prefer to exert less effort rather than more effort to obtain food, the present research shows that requiring greater effort to obtain food at a particular location appears to increase the value of that location. In Experiment 1, pigeons' initial preference for one feeder was significantly reduced by requiring 1 peck to obtain food from that feeder and requiring 30 pecks to obtain food from the other feeder. In Experiment 2, a similar decrease in preference was not found when pigeons received reinforcement from both feeders independently of the amount of effort required. These results are consistent with the within-trial contrast effect proposed by in which the relative hedonic value of a reward depends on the state of the animal immediately prior to the reward. The greater the improvement from that prior state the greater the value of the reinforcer. |
Address |
Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA |
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English |
Summary Language |
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Edition |
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ISSN |
0376-6357 |
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Notes |
PMID:15518990 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
227 |
Permanent link to this record |