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Author |
Brodbeck, D.R. |
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Title |
Picture fragment completion: priming in the pigeon |
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Journal Article |
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Year |
1997 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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23 |
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4 |
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461-468 |
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Animals; *Attention; *Awareness; Columbidae; *Mental Recall; *Pattern Recognition, Visual; *Perceptual Masking; Problem Solving |
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It has been suggested that the system behind implicit memory in humans is evolutionarily old and that animals should readily show priming. In Experiment 1, a picture fragment completion test was used to test priming in pigeons. After pecking a warning stimulus, pigeons were shown 2 partially obscured pictures from different categories and were always reinforced for choosing a picture from one of the categories. On control trials, the warning stimulus was a picture of some object (not from the S+ or S- category), on study trials the warning stimulus was a picture to be categorized on the next trial, and on test trials the warning stimulus was a randomly chosen picture and the S+ picture was the warning stimulus seen on the previous trial. Categorization was better on study and test trials than on control trials. Experiment 2 ruled out the possibility that the priming effect was caused by the pigeons' responding to familiarity by using warning stimuli from both S+ and S- categories. Experiment 3 investigated the time course of the priming effect. |
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Department of Psychology, University of Western Ontario, London, Ontario, Canada. brodbeck@thunderbird.auc.laurentian.ca |
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0097-7403 |
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PMID:9411019 |
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Equine Behaviour @ team @ |
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2777 |
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Author |
Church, R.M. |
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Title |
Quantitative models of animal learning and cognition |
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Journal Article |
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Year |
1997 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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23 |
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4 |
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379-389 |
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Animals; *Behavior, Animal; *Cognition; Computer Simulation; *Learning; *Models, Psychological; *Models, Theoretical |
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This article reviews the prerequisites for quantitative models of animal learning and cognition, describes the types of models, provides a rationale for the development of such quantitative models, describes criteria for their evaluation, and makes recommendations for the next generation of quantitative models. A modular approach to the development of models is described in which a procedure is considered as a generator of stimuli and a model is considered as a generator of responses. The goal is to develop models that, in combination with many different procedures, produce sequences of times of occurrence of events (stimuli and responses) that are indistinguishable from those produced by the animal under many experimental procedures and data analysis techniques. |
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Department of Psychology, Brown University, Providence, Rhode Island 02912, USA. russell_church@brown.edu |
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0097-7403 |
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PMID:9335132 |
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Equine Behaviour @ team @ |
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2778 |
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Wasserman, E.A. |
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Title |
The science of animal cognition: past, present, and future |
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Journal Article |
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Year |
1997 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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23 |
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2 |
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123-135 |
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Animal Communication; Animal Population Groups/*psychology; Animals; Behavior, Animal; Behavioral Sciences/*trends; *Cognition; Evolution; Forecasting; Humans; Intelligence |
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The field of animal cognition is strongly rooted in the philosophy of mind and in the theory of evolution. Despite these strong roots, work during the most famous and active period in the history of our science-the 1930s, 1940s, and 1950s-may have diverted us from the very questions that were of greatest initial interest to the comparative analysis of learning and behavior. Subsequently, the field has been in steady decline despite its increasing breadth and sophistication. Renewal of the field of animal cognition may require a return to the original questions of animal communication and intelligence using the most advanced tools of modern psychological science. Reclaiming center stage in contemporary psychology will be difficult; planning that effort with a host of strategies should enhance the chances of success. |
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Department of Psychology, University of Iowa, Iowa City 52242-1407, USA. ed-wasserman@uiowa.edu |
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0097-7403 |
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PMID:9095537 |
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Equine Behaviour @ team @ |
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2779 |
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Bekoff M. |
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Title |
Deep Ethology, Animal Rights, and the Great Ape/Animal Project: Resisting Speciesism and Expanding the Community of Equals |
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Year |
1997 |
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Journal of Agricultural and Environmental Ethics |
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10 |
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269-296 |
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refbase @ user @ |
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3470 |
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Kirkpatrick, J.F.; Turner, J.W.J.; Liu, I.K.; Fayrer-Hosken, R.; Rutberg, A.T. |
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Case studies in wildlife immunocontraception: wild and feral equids and white-tailed deer |
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Journal Article |
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Year |
1997 |
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Reproduction, fertility, and development |
Abbreviated Journal |
Reprod Fertil Dev |
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9 |
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1 |
Pages |
105-110 |
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Animals; Antigens/immunology; Contraception, Immunologic/*veterinary; *Deer; *Equidae; Female; Immunization, Secondary; Pest Control/*methods; Pregnancy; Swine; Vaccines/administration & dosage; Zona Pellucida/immunology |
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Non-lethal management methods are required for wild equids that are protected by law and for deer inhabiting areas where lethal controls are not legal or safe. Single or multiple inoculations of porcine zona pellucida (PZP) vaccine have been delivered to wild horses and deer by means of darts. Contraceptive efficacy in horses after two inoculations ranged from 90% to 100%, and after a single inoculation ranged from 19% to 28%. Mares given a controlled-release form of the vaccine had foaling rates ranging from 7% to 20%. No detectable changes in social organization or behaviours among treated horses occurred. Contraceptive effects were reversible after 4 consecutive years of treatment but 5-7 years of treatment resulted in ovulation failure and decreased urinary oestrogen concentrations. Among deer, two inoculations were 70-100% effective in preventing fawns, but one inoculation yielded a contraceptive efficacy of < or = 20%, with pregnancies occurring late in the breeding season; a single annual booster inoculation reduced fertility to 20% in the second year. Energy costs of extended breeding seasons were less than those resulting from pregnancy. After two years of treatment, ovaries appeared normal. These studies suggest that PZP immunocontraception can be successfully applied to certain free-roaming populations of wild horses and deer. |
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ZooMontana, Billings 59108, USA |
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1031-3613 |
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PMID:9109199 |
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refbase @ user @ |
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143 |
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Dellert, B.; Ganslosser, U. |
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Experimental alterations of food distribution in two species of captive equids (Equus burchelli and E. hemionus kulan) |
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Journal Article |
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Year |
1997 |
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Ethology Ecology & Evolution (EEE) |
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Ethol Ecol Evol |
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9 |
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1 |
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1-17 |
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n one group each of Plains zebra (six mares, one foal, one subadult) and Asiatic wild asses (seven mares, two foals) at Nuremberg Zoo, food distribution was experimentally changed from clumped (all food in one standard hay rack) to dispersed (one heap per animal). Both groups were characterized by different social structures, which basically remained during the experiment. Plains zebras had an individually structured system of social relationships in a dominance order, wild asses a more egalitarian system without clear-cut rank differences and low frequencies of agonistic interactions. Access to food accordingly was individually (but consistently) different for zebra mares, almost equal for wild ass mares. During the dispersed feeding situation frequencies of agonistic interactions in both species decreased (however non-significantly), individual distances increased but mares also frequently ''visited'' each others' heaps. Feeding time increased for all wild ass mares. Some individuals (in both groups) behaved ''against the trend'' in agonistic behaviour. The results are discussed with regard to food distribution for ungulates in general, and equid social systems. |
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Equine Behaviour @ team @ |
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2292 |
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Author |
Dugatkin, L.A. |
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Title |
Winner and loser effects and the structure of dominance hierarchies |
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Journal Article |
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Year |
1997 |
Publication |
Behavioral Ecology |
Abbreviated Journal |
Behav. Ecol. |
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8 |
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6 |
Pages |
583-587 |
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In the literature on dominance hierarchies, “winner” and “loser” effects usually are denned as an increased probability of winning at time T, bated on victories at time T-l, T-2, etc, and an increased probability of losing at time T, based on losing at T-1, T-2, etc., respectively. Despite some early theoretical work on winner and loser effects, these factors and how they affect the structure of dominance hierarchies have not been examined in detail. I developed a computer simulation to examine winner and loser effects when such effects are independent of one another (as well as when they interact) and when combatants assess each other's resource-holding power. When winner effects alone were important, a hierarchy in which all individuals held an unambiguous rank was found. When only loser effects were important, a dear alpha individual always emerged, but the rank of others in the group was often unclear because of the scarcity of aggressive interactions. Increasing winner effects for a given value of the loser effect increase the number of individuals with unambiguous positions in a hierarchy and the converse is true for increasing the value of the loser effect for a given winner effect Although winner and loser effects have been documented in a number of species, no study has documented both winner and loser effects (using some controlled, pairwise testing system) and the detailed nature of behavioral interactions when individuals are in groups. I hope the results of this model will spur such studies in the future. |
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10.1093/beheco/8.6.583 |
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refbase @ user @ |
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759 |
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Author |
Dulac, C. |
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Title |
Molecular biology of pheromone perception in mammals |
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1997 |
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Seminars in Cell & Developmental Biology |
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Semin Cell Dev Biol |
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8 |
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2 |
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197-205 |
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accessory olfactory bulb; olfaction; olfactory receptor; pheromone; vomeronasal |
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In mammals, olfactory sensory perception is mediated by two anatomically and functionally distinct sensory organs: the main olfactory epithelium (MOE) and the vomeronasal organ (VNO). Pheromones activate the VNO and elicit a characteristic array of innate reproductive and social behaviors, along with dramatic neuroendocrine responses. Recent approaches have provided new insights into the molecular biology of sensory transduction in the vomeronasal organ. Differential screening of cDNA libraries constructed from single sensory neurons from the rat VNO has led to the isolation of a family of genes which are likely to encode mammalian pheromone receptors. The isolation of these receptors from the vomeronasal organ might permit the analysis of the molecular events which translate the bindings of pheromones into innate stereotypic behaviors and help to elucidate the logic of pheromone perception in mammals. |
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797 |
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Delacour, J. |
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Title |
Object Perception and Recognition: A Model for the Scientific Study of Consciousness |
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1997 |
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Theory Psychology |
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7 |
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2 |
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257-262 |
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The main obstacles to the scientific study of consciousness are its subjectivity and its complexity. Object perception and recognition (OPR) can be a useful model in such a study because there is a remarkable agreement between the subjective and objective aspects of OPR; in addition, while OPR is somewhat simpler than other forms of cognition, it adequately represents one characteristic feature of consciousness: intentionality. It thus allows convergent studies of experimental psychology, artificial intelligence and biology, in both humans and animals. Recent advances in the neurophysiology of visual OPR in subhuman primates and its brain imaging in humans provide a vital thread to the neural basis of consciousness, especially of its integrative, unifying character. |
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10.1177/0959354397072007 |
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Equine Behaviour @ team @ |
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2967 |
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Parker, S.T. |
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A general model for the adaptive function of self-knowledge in animals and humans |
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1997 |
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Consciousness and Cognition |
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Conscious Cogn |
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6 |
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1 |
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75-86 |
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*Adaptation, Psychological; Animals; *Awareness; Concept Formation; Evolution; Humans; Phylogeny; *Self Concept; Species Specificity |
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This article offers a general definition of self-knowledge that embraces all forms and levels of self-knowledge in animals and humans. It is hypothesized that various levels of self-knowledge constitute an ordinal scale such that each species in a lineage displays the forms of self-knowledge found in related species as well as new forms it and its sister species may have evolved. Likewise, it is hypothesized that these various forms of levels of self-knowledge develop in the sequence in which they evolved. Finally, a general hypothesis for the functional significance of self-knowledge is proposed along with subhypotheses regarding the adaptive significance of various levels of self-knowledge in mammals including human and nonhuman primates. The general hypothesis is that self-knowledge serves as a standard for assessing the qualities of conspecifics compared to those of the self. Such assessment is crucial to deciding among alternative reproductive and subsistence strategies. The qualities that are assessed, which vary across taxa, range from the size and strength of the self to its mathematical or musical abilities. This so-called assessment model of self-knowledge is based on evolutionary biological models for social selection and the role of assessment in animal communication. |
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Anthropology Department, Sonoma State University, Rohnert Park, California, USA. Parker@Sonoma.edu |
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1053-8100 |
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PMID:9170562 |
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Equine Behaviour @ team @ |
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4160 |
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