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Author |
Boughner, R.L.; Papini, M.R. |
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Title |
Appetitive latent inhibition in rats: preexposure performance does not predict conditioned performance |
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Journal Article |
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Year |
2006 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
72 |
Issue |
1 |
Pages |
42-51 |
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Keywords |
Animals; *Appetitive Behavior; Association Learning; *Conditioning, Classical; *Habituation, Psychophysiologic; Individuality; *Inhibition (Psychology); Male; Motivation; Rats; Rats, Wistar; *Reaction Time |
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Abstract |
Nonreinforced preexposure to a conditioned stimulus impairs subsequent conditioning with that stimulus. The goal of these studies was to assess the extent to which acquisition performance could be predicted from preexposure performance using a correlational approach. For both preexposure and autoshaping, four measures of performance were computed, including overall average lever pressing, lever pressing in the initial session, percentage change in lever pressing, and slopes. These measures were correlated in a large sample of rats trained in an autoshaping situation. None of the three measures of autoshaping performance was consistently predicted by any of the three measures of preexposure performance. These results are consistent with the view that latent inhibition is not reducible to long-term habituation. |
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Department of Psychology, Texas Christian University, TX 76129, United States |
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0376-6357 |
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PMID:16406375 |
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no |
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Equine Behaviour @ team @ |
Serial |
4147 |
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Author |
Zentall, T.R. |
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Title |
Timing, memory for intervals, and memory for untimed stimuli: The role of instructional ambiguity |
Type |
Journal Article |
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Year |
2006 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
71 |
Issue |
2-3 |
Pages |
88-97 |
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Theories of animal timing have had to account for findings that the memory for the duration of a timed interval appears to be dramatically shorted within a short time of its termination. This finding has led to the subjective shortening hypothesis and it has been proposed to account for the poor memory that animals appear to have for the initial portion of a timed interval when a gap is inserted in the to-be-timed signal. It has also been proposed to account for the poor memory for a relatively long interval that has been discriminated from a shorter interval. I suggest here a simpler account in which ambiguity between the gap or retention interval and the intertrial interval results in resetting the clock, rather than forgetting the interval. The ambiguity hypothesis, together with a signal salience mechanism that determines how quickly the clock is reset at the start of the intertrial interval can account for the results of the reported timing experiments that have used the peak procedure. Furthermore, instructional ambiguity rather than memory loss may account for the results of many animal memory experiments that do not involve memory for time. |
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Department of Psychology, University of Kentucky, 202B Kastle Hall, Lexington, KY 40506-0044, USA. zentall@uky.edu |
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0376-6357 |
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PMID:16406373 |
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Call Number |
refbase @ user @ |
Serial |
219 |
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Author |
Zentall, T.R. |
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Title |
Timing, memory for intervals, and memory for untimed stimuli: the role of instructional ambiguity |
Type |
Journal Article |
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Year |
2005 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
70 |
Issue |
3 |
Pages |
209-222 |
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Keywords |
Animals; *Attention; Columbidae; *Discrimination Learning; *Memory, Short-Term; Practice (Psychology); Reinforcement Schedule; *Retention (Psychology); *Time Perception |
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Abstract |
Theories of animal timing have had to account for findings that the memory for the duration of a timed interval appears to be dramatically shorted within a short time of its termination. This finding has led to the subjective shortening hypothesis and it has been proposed to account for the poor memory that animals appear to have for the initial portion of a timed interval when a gap is inserted in the to-be-timed signal. It has also been proposed to account for the poor memory for a relatively long interval that has been discriminated from a shorter interval. I suggest here a simpler account in which ambiguity between the gap or retention interval and the intertrial interval results in resetting the clock, rather than forgetting the interval. The ambiguity hypothesis, together with a signal salience mechanism that determines how quickly the clock is reset at the start of the intertrial interval can account for the results of the reported timing experiments that have used the peak procedure. Furthermore, instructional ambiguity rather than memory loss may account for the results of many animal memory experiments that do not involve memory for time. |
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Department of Psychology, University of Kentucky, 202B Kastle Hall, Lexington, KY 40506-0044, USA. zentall@uky.edu |
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0376-6357 |
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PMID:16095851 |
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no |
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Call Number |
refbase @ user @ |
Serial |
222 |
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Author |
Shettleworth, S.J. |
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Title |
Taking the best for learning |
Type |
Journal Article |
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Year |
2005 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
69 |
Issue |
2 |
Pages |
147-9; author reply 159-63 |
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Keywords |
*Algorithms; Animals; *Behavior, Animal; Decision Making; Evolution; *Learning; *Models, Theoretical |
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Abstract |
Examples of how animals learn when multiple, sometimes redundant, cues are present provide further examples not considered by Hutchinson and Gigerenzer that seem to fit the principle of taking the best. “The best” may the most valid cue in the present circumstances; evolution may also produce species-specific biases to use the most functionally relevant cues. |
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Department of Psychology, University of Toronto, Toronto, Ont., Canada M5S 3G3. shettle@psych.utoronto.ca |
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0376-6357 |
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PMID:15845301 |
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no |
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Call Number |
refbase @ user @ |
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361 |
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Author |
Dunbar, R.I.M.; McAdam, M.R.; O'connell, S. |
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Title |
Mental rehearsal in great apes (Pan troglodytes and Pongo pygmaeus) and children |
Type |
Journal Article |
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Year |
2005 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
69 |
Issue |
3 |
Pages |
323-330 |
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Keywords |
Algorithms; Animals; Child; Child, Preschool; Food; Frontal Lobe/anatomy & histology/physiology; Humans; *Imagination; Pan troglodytes; Pongo pygmaeus; Problem Solving/*physiology; Psychomotor Performance/physiology; Reward |
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Abstract |
The ability to rehearse possible future courses of action in the mind is an important feature of advanced social cognition in humans, and the “social brain” hypothesis implies that it might also be a feature of primate social cognition. We tested two chimpanzees, six orangutans and 63 children aged 3-7 years on a set of four puzzle boxes, half of which were presented with an opportunity to observe the box before being allowed to open it (“prior view”), the others being given without an opportunity to examine the boxes before handling them (“no prior view”). When learning effects are partialled out, puzzle boxes in the “prior view” condition were opened significantly faster than boxes given in the “no prior view” condition by the children, but not by either of the great apes. The three species differ significantly in the speed with which they opened boxes in the “no prior view” condition. The three species' performance on this task was a function of relative frontal lobe volume, suggesting that it may be possible to identify quantitative neuropsychological differences between species. |
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Evolutionary Psychology Research Group, School of Biological Sciences, University of Liverpool, Biosciences Building, Crown Street, Liverpool L69 7ZB, UK. rimd@liv.ac.uk |
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0376-6357 |
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PMID:15896530 |
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2097 |
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Author |
Zentall, T.R. |
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Title |
Selective and divided attention in animals |
Type |
Journal Article |
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Year |
2005 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
69 |
Issue |
1 |
Pages |
1-15 |
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Keywords |
Animals; *Attention; *Behavior, Animal; *Discrimination (Psychology); *Field Dependence-Independence; *Psychological Theory |
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Abstract |
This article reviews some of the research on attentional processes in animals. In the traditional approach to selective attention, it is proposed that in addition to specific response attachments, animals also learn something about the dimension along which the stimuli fall (e.g., hue, brightness, or line orientation). More recently, there has been an attempt to find animal analogs to methodologies originally applied to research with humans. One line of research has been directed to the question of whether animals can locate a target among distracters faster if they are prepared for the presentation of the target (search image and priming). In the study of search image, the target is typically a food item and the cue consists of previous trials on which the same target is presented. In research on priming effects, the cue is typically different from the target but is a good predictor of its occurrence. The study of preattentive processes shows that perceptually, certain stimuli stand out from distracters better than others, depending not only on characteristics of the target relative to the distracters, but also on relations among the distracters. Research on divided attention is examined with the goal of determining whether an animal can process two elements of a compound sample with the same efficiency as one. Taken together, the reviewed research indicates that animals are capable of centrally (not just peripherally) attending to selective aspects of a stimulus display. |
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Department of Psychology, University of Kentucky, 202B Kastle Hall, Lexington, KY 40506-0044, USA. Zentall@uky.edu |
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0376-6357 |
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PMID:15795066 |
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Call Number |
refbase @ user @ |
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224 |
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Author |
Lafferty, K.D. |
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Title |
Look what the cat dragged in: do parasites contribute to human cultural diversity? |
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Journal Article |
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Year |
2005 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
68 |
Issue |
3 |
Pages |
279-282 |
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Keywords |
Adaptation, Physiological/physiology; Adaptation, Psychological/physiology; Animals; Behavior/physiology; *Behavior Control; Cats/*parasitology; Cultural Diversity; Host-Parasite Relations; Humans; Personality/*physiology; Toxoplasma/*physiology; Toxoplasmosis/parasitology/*psychology |
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Western Ecological Research Center, United States Geological Survey, c/o Marine Science Institute, University of California, Santa Barbara, CA 93106, USA. lafferty@lifesci.ucsb.edu |
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0376-6357 |
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PMID:15792708 |
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Equine Behaviour @ team @ |
Serial |
4148 |
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Author |
Friedrich, A.M.; Zentall, T.R. |
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Title |
Pigeons shift their preference toward locations of food that take more effort to obtain |
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Journal Article |
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Year |
2004 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
67 |
Issue |
3 |
Pages |
405-415 |
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Keywords |
Animals; *Behavior, Animal; *Choice Behavior; Columbidae; *Exertion; *Feeding Behavior; Reward |
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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. |
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Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA |
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0376-6357 |
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PMID:15518990 |
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no |
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refbase @ user @ |
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227 |
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Friedrich, A.M.; Clement, T.S.; Zentall, T.R. |
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Title |
Functional equivalence in pigeons involving a four-member class |
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Journal Article |
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Year |
2004 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
67 |
Issue |
3 |
Pages |
395-403 |
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Keywords |
Animals; *Association Learning; *Behavior, Animal; *Cognition; Columbidae; *Concept Formation |
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Abstract |
Research suggests that animals are capable of forming functional equivalence relations or stimulus classes of the kind usually demonstrated by humans (e.g., the class defined by an object and the word for that object). In pigeons, such functional equivalences are typically established using many-to-one matching-to-sample in which two samples are associated with one comparison stimulus and two different samples are associated with the other. Evidence for the establishment of functional equivalences between samples associated with the same comparison comes from transfer tests. In Experiment 1, we found that pigeons can form a single class consisting of four members (many-to-one matching) when the alternative class has only one member (one-to-one matching). In Experiment 2, we ruled out the possibility that the pigeons acquired the hybrid one-to-one/many-to-one task by developing a single-code/default coding strategy as earlier research suggested that it might. Thus, pigeons can develop a functional class consisting of as many as four members, with the alternative class consisting of a single member. |
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Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA |
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0376-6357 |
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PMID:15518989 |
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refbase @ user @ |
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228 |
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