Records |
Author |
Zentall, T.R.; Weaver, J.E.; Clement, T.S. |
Title |
Pigeons group time intervals according to their relative duration |
Type |
Journal Article |
Year |
2004 |
Publication |
Psychonomic bulletin & review |
Abbreviated Journal |
Psychon Bull Rev |
Volume |
11 |
Issue |
1 |
Pages |
113-117 |
Keywords |
Animals; Columbidae; *Discrimination (Psychology); Reinforcement (Psychology); Time Factors; Time Perception |
Abstract |
In the present research, we asked whether pigeons tended to judge time intervals not only in terms of their absolute value but also relative to a duration from which they must be discriminated (i.e., longer or shorter). Pigeons were trained on two independent temporal discriminations. In one discrimination, sample durations of 2 and 8 sec were associated with, for example, red and green hue comparisons, respectively, and in the other discrimination, sample durations of 4 and 16 sec were associated with vertical and horizontal line comparisons, respectively. If pigeons are trained on a temporal discrimination and tested with intermediate durations, the subjective midpoint typically occurs close to the geometric mean of the two trained values. The 4- and 8-sec values were selected to be the geometric mean of the two values in the other discrimination. When a 4-sec test sample was presented with the comparisons from the 2- and 8-sec discrimination, the pigeons preferred the comparison associated with the shorter sample. Similarly, when an 8-sec test sample was presented with the comparisons from the 4- and 16-sec discrimination, the pigeons preferred the comparison associated with the longer sample. Thus, a relative grouping effect was found. That is, durations that should have produced indifferent choice were influenced by their relative durations (shorter than or longer than the alternative) during training. |
Address |
Department of Psychology, University of Kentucky, Lexington, Kentucky 40506-0044, USA. zentall@pop.uky.edu |
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1069-9384 |
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PMID:15116995 |
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no |
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refbase @ user @ |
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231 |
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Author |
Clayton, N.S. |
Title |
COGNITION: An Open Sandwich or an Open Question? |
Type |
Journal Article |
Year |
2004 |
Publication |
Science |
Abbreviated Journal |
Science |
Volume |
305 |
Issue |
5682 |
Pages |
344- |
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10.1126/science.1099512 |
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Equine Behaviour @ team @ |
Serial |
2955 |
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Author |
Emery, N.J.; Clayton, N.S. |
Title |
The Mentality of Crows: Convergent Evolution of Intelligence in Corvids and Apes |
Type |
Journal Article |
Year |
2004 |
Publication |
Science |
Abbreviated Journal |
Science |
Volume |
306 |
Issue |
5703 |
Pages |
1903-1907 |
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Abstract |
Discussions of the evolution of intelligence have focused on monkeys and apes because of their close evolutionary relationship to humans. Other large-brained social animals, such as corvids, also understand their physical and social worlds. Here we review recent studies of tool manufacture, mental time travel, and social cognition in corvids, and suggest that complex cognition depends on a “tool kit” consisting of causal reasoning, flexibility, imagination, and prospection. Because corvids and apes share these cognitive tools, we argue that complex cognitive abilities evolved multiple times in distantly related species with vastly different brain structures in order to solve similar socioecological problems. |
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10.1126/science.1098410 |
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Equine Behaviour @ team @ |
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2959 |
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Author |
Kaminski, J.; Call, J.; Fischer, J. |
Title |
Word Learning in a Domestic Dog: Evidence for “Fast Mapping” |
Type |
Journal Article |
Year |
2004 |
Publication |
Science |
Abbreviated Journal |
Science |
Volume |
304 |
Issue |
5677 |
Pages |
1682-1683 |
Keywords |
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Abstract |
During speech acquisition, children form quick and rough hypotheses about the meaning of a new word after only a single exposure--a process dubbed “fast mapping.” Here we provide evidence that a border collie, Rico, is able to fast map. Rico knew the labels of over 200 different items. He inferred the names of novel items by exclusion learning and correctly retrieved those items right away as well as 4 weeks after the initial exposure. Fast mapping thus appears to be mediated by general learning and memory mechanisms also found in other animals and not by a language acquisition device that is special to humans. |
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10.1126/science.1097859 |
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Equine Behaviour @ team @ |
Serial |
4678 |
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Author |
Milo, R.; Itzkovitz, S.; Kashtan, N.; Levitt, R.; Alon, U. |
Title |
Response to Comment on “Network Motifs: Simple Building Blocks of Complex Networks” and “Superfamilies of Evolved and Designed Networks” |
Type |
Journal Article |
Year |
2004 |
Publication |
Science |
Abbreviated Journal |
Science |
Volume |
305 |
Issue |
5687 |
Pages |
1107d |
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10.1126/science.1100519 |
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Equine Behaviour @ team @ |
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5031 |
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Author |
Milo, R.; Itzkovitz, S.; Kashtan, N.; Levitt, R.; Shen-Orr, S.; Ayzenshtat, I.; Sheffer, M.; Alon, U. |
Title |
Superfamilies of Evolved and Designed Networks |
Type |
Journal Article |
Year |
2004 |
Publication |
Science |
Abbreviated Journal |
Science |
Volume |
303 |
Issue |
5663 |
Pages |
1538-1542 |
Keywords |
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Abstract |
Complex biological, technological, and sociological networks can be of very different sizes and connectivities, making it difficult to compare their structures. Here we present an approach to systematically study similarity in the local structure of networks, based on the significance profile (SP) of small subgraphs in the network compared to randomized networks. We find several superfamilies of previously unrelated networks with very similar SPs. One superfamily, including transcription networks of microorganisms, represents “rate-limited” information-processing networks strongly constrained by the response time of their components. A distinct superfamily includes protein signaling, developmental genetic networks, and neuronal wiring. Additional superfamilies include power grids, protein-structure networks and geometric networks, World Wide Web links and social networks, and word-adjacency networks from different languages. |
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10.1126/science.1089167 |
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no |
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Equine Behaviour @ team @ |
Serial |
5033 |
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Author |
Artzy-Randrup, Y.; Fleishman, S.J.; Ben-Tal, N.; Stone, L. |
Title |
Comment on “Network Motifs: Simple Building Blocks of Complex Networks” and “Superfamilies of Evolved and Designed Networks” |
Type |
Journal Article |
Year |
2004 |
Publication |
Science |
Abbreviated Journal |
Science |
Volume |
305 |
Issue |
5687 |
Pages |
1107c |
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10.1126/science.1099334 |
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Equine Behaviour @ team @ |
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5037 |
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Author |
Bloom, P. |
Title |
Behavior. Can a dog learn a word? |
Type |
Journal Article |
Year |
2004 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
Volume |
304 |
Issue |
5677 |
Pages |
1605-1606 |
Keywords |
Animals; Child; Child, Preschool; *Dogs; Humans; *Learning; *Memory; *Vocabulary |
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Address |
Department of Psychology, Yale University, Post Office Box 208205, New Haven, CT 06520-8205, USA. paul.bloom@yale.edu |
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1095-9203 |
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PMID:15192205 |
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28 |
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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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2131 |
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Author |
Subiaul, F.; Cantlon, J.F.; Holloway, R.L.; Terrace, H.S. |
Title |
Cognitive imitation in rhesus macaques |
Type |
Journal Article |
Year |
2004 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
Volume |
305 |
Issue |
5682 |
Pages |
407-410 |
Keywords |
Animals; *Cognition; *Imitative Behavior; *Learning; Macaca mulatta/*physiology/psychology; Male |
Abstract |
Experiments on imitation typically evaluate a student's ability to copy some feature of an expert's motor behavior. Here, we describe a type of observational learning in which a student copies a cognitive rule rather than a specific motor action. Two rhesus macaques were trained to respond, in a prescribed order, to different sets of photographs that were displayed on a touch-sensitive monitor. Because the position of the photographs varied randomly from trial to trial, sequences could not be learned by motor imitation. Both monkeys learned new sequences more rapidly after observing an expert execute those sequences than when they had to learn new sequences entirely by trial and error. |
Address |
Department of Anthropology, Columbia University, New York, NY 10027, USA. subiaul@aol.com |
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1095-9203 |
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PMID:15256673 |
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Equine Behaviour @ team @ |
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2839 |
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