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Author |
Pennisi, E. |
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Title |
Are out primate cousins 'conscious'? |
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1999 |
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Science (New York, N.Y.) |
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Science |
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284 |
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5423 |
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2073-2076 |
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Animals; *Behavior, Animal; Cebus; *Consciousness; Empathy; Humans; Instinct; Intelligence; Learning; *Mental Processes; Pan troglodytes; *Primates |
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English |
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0036-8075 |
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PMID:10409060 |
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Equine Behaviour @ team @ |
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2843 |
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Author |
Swanson, J.C. |
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What are animal science departments doing to address contemporary issues? |
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Year |
1999 |
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Journal of Animal Science |
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J. Anim Sci. |
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77 |
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2 |
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354-360 |
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Equine Behaviour @ team @ |
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2937 |
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Author |
Daly, M.; Wilson, M.I. |
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Title |
Human evolutionary psychology and animal behaviour |
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Journal Article |
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Year |
1999 |
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Animal Behaviour. |
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Anim. Behav. |
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57 |
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3 |
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509-519 |
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Abstract |
Homo sapiensis increasingly being studied within the evolutionary (adaptationist, selectionist) framework favoured by animal behaviour researchers. There are various labels for such work, including evolutionary psychology, human behavioural ecology and human sociobiology. Collectively, we call these areas `human evolutionary psychology' (HEP) because their shared objective is an evolutionary understanding of human information processing and decision making. Sexual selection and sex differences have been especially prominent in recent HEP research, but many other topics have been addressed, including parent-offspring relations, reciprocity and exploitation, foraging strategies and spatial cognition. Many HEP researchers began their scientific careers in animal behaviour, and in many ways, HEP research is scarcely distinguishable from other animal behaviour research. Currently controversial issues in HEP, such as the explanation(s) for observed levels of heritable diversity, the kinds of data needed to test adaptationist hypotheses, and the characterization of a species-typical `environment of evolutionary adaptedness', are issues in animal behaviour as well. What gives HEP a distinct methodological flavour is that the research animal can talk, an ability that has both advantages and pitfalls for researchers. The proper use of self-reports and other verbal data in HEP might usefully become a subject of future research in its own right. |
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Equine Behaviour @ team @ |
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2909 |
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Author |
Pinker, S. |
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Title |
COGNITION:Enhanced: Out of the Minds of Babes |
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1999 |
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Science |
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Science |
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283 |
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5398 |
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40-41 |
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10.1126/science.283.5398.40 |
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Equine Behaviour @ team @ |
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2956 |
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Hauser MD; Kralik J; Botto-Mahan C |
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Problem solving and functional design features: experiments on cotton-top tamarins, Saguinus oedipus oedipus |
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1999 |
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Animal Behaviour. |
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Anim. Behav. |
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57 |
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565 |
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Equine Behaviour @ team @ |
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3065 |
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Heiling, A.M.; Herberstein, M.E. |
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Title |
The role of experience in web-building spiders (Araneidae) |
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Year |
1999 |
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Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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2 |
Issue |
3 |
Pages |
171-177 |
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A typical feature of vertical orb-webs is the 'top/bottom' asymmetry, where the lower web region is larger than the upper web region. This asymmetry may improve prey capture success, because, sitting in the hub of the web, a spider can reach prey entangled below the hub faster than prey entangled in the area above the hub. While web asymmetry is known to vary intraspecifically, we tested if this variation also exists at the individual level and whether it is the result of experience, using two orb-web spider species, Argiope keyserlingi and Larinioides sclopetarius. The results reveal that experienced web-building spiders constructed more asymmetric webs than conspecifics deprived of any prior building experience over a period of several months. Experienced individuals invested more silk material into the web region below the hub, which covered a larger area. Moreover, web asymmetry was also influenced by previous prey capture experiences, as spiders increased the lower region of the web if it intercepted the most prey over a period of 6 days. Consequently, spiders may be able to use long-term web-building experience as well as short-term prey capture experience to build better traps. In contrast to previous views of spiders, experience can contribute to intraspecific as well as to individual variations in web design. |
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Equine Behaviour @ team @ |
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3154 |
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Author |
Byrne, R.W. |
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Title |
Imitation without intentionality. Using string parsing to copy the organization of behaviour |
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Year |
1999 |
Publication |
Animal Cognition |
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Anim. Cogn. |
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2 |
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2 |
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63-72 |
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A theory of imitation is proposed, string parsing, which separates the copying of behavioural organization by observation from an understanding of the cause of its effectiveness. In string parsing, recurring patterns in the visible stream of behaviour are detected and used to build a statistical sketch of the underlying hierarchical structure. This statistical sketch may in turn aid the subsequent comprehension of cause and effect. Three cases of social learning of relatively complex skills are examined, as potential cases of imitation by string parsing. Understanding the basic requirements for successful string parsing helps to resolve the conflict between mainly negative reports of imitation in experiments and more positive evidence from natural conditions. Since string parsing does not depend on comprehension of the intentions of other agents or the everyday physics of objects, separate tests of these abilities are needed even in animals shown to learn by imitation. |
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Equine Behaviour @ team @ |
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3162 |
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Treichler, F.R.; Van Tilburg, D. |
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Training requirements and retention characteristics of serial list organization by macaque monkeys |
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1999 |
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Animal Cognition |
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Anim. Cogn. |
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2 |
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4 |
Pages |
235-244 |
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This work evaluated the prospect that organizational accounts of the retention of list information by monkeys might be an artifact of familiarity with conditional relationships. Seven sophisticated macaques were trained on four five-item lists. Each acquisition selectively excluded one of the internal conditional pairs of the typical four-problem sequence (AB,BC,CD,DE) that defines a five-item serially ordered list. Then, all possible novel pairings and the trained pairs appeared together in a test. After this, the previously omitted pair was trained and animals were retested. On all tasks, initial tests revealed little organization and much intersubject variability of characteristic choice strategies, but subsequent inclusion of all four conditional pairs always yielded organized serial choice. On both the four-problem tests and in a later retention, errors were directly related to interitem distance between the objects paired on test trials. These results helped to specify the conditions required for demonstration of non-human primate analogs of transitivity, and showed that even sophisticated monkeys organize information in retention only if they know all interitem relationships. |
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Equine Behaviour @ team @ |
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3211 |
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Author |
Santos, L.R.; Hauser, M.D. |
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How monkeys see the eyes: cotton-top tamarins' reaction to changes in visual attention and action |
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1999 |
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Animal Cognition |
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Anim. Cogn. |
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2 |
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3 |
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131-139 |
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Among social species, the capacity to detect where another individual is looking is adaptive because gaze direction often predicts what an individual is attending to, and thus what its future actions are likely to be. We used an expectancy violation procedure to determine whether cotton-top tamarins (Saguinus oedipus oedipus) use the direction of another individual's gaze to predict future actions. Subjects were familiarized with a sequence in which a human actor turned her attention toward one of two objects sitting on a table and then reached for that object. Following familiarization, subjects saw two test events. In one test event, the actor gazed at the new object and then reached for that object. From a human perspective, this event is considered consistent with the causal relationship between visual attention and subsequent action, that is, grabbing the object attended to. In the second test event, the actor gazed at the old object, but reached for the new object. This event is considered a violation of expectation. When the actor oriented with both her head-and-eyes, subjects looked significantly longer at the second test event in which the actor reached for the object to which she had not previously oriented. However, there was no difference in looking time between test events when the actor used only her eyes to orient. These findings suggest that tamarins are able to use some combination of head orientation and gaze direction, but not gaze direction alone, to predict the actions of a human agent. |
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Equine Behaviour @ team @ |
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3221 |
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Author |
Gould, J.L.; Zabka, T.S.; Malizia, R.W.; Park, A.; Mukerji, J. |
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Title |
Possible decision-making preadaptations in the molly Poecilia sphenops |
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1999 |
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Animal Cognition |
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Anim. Cogn. |
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2 |
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2 |
Pages |
91-95 |
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In many species females choose a mate from among several available males; in other species, the social system provides no apparent opportunity for making a decision among alternative suitors, and decision-making capacity is assumed to be minimal. The origins, bases, and logic of female mate choices are contentious questions with important cognitive implications. Female short-finned mollies, Poecilia sphenops, have never been observed to choose mates in the wild, where instead a male-contest social system prevails. Nevertheless they readily choose between models of males in the laboratory. Some of their decisions anticipate features found in males in more recently evolved species where the social system permits female choice. The willingness of females to choose traits in a species without such traits or evident need or opportunity for female choice in the wild is remarkable. These observations suggest that choice behavior can be latent in a species, and may direct or bias the development of behavioral preferences. |
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Equine Behaviour @ team @ |
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3254 |
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