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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 |
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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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refbase @ user @ |
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222 |
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Author |
Treichler, F.R. |
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Title |
Successive reversal of concurrent discriminations by macaques (Macaca mulatta): proactive interference effects |
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Journal Article |
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Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
8 |
Issue |
2 |
Pages |
75-83 |
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Keywords |
Animals; Choice Behavior; *Discrimination Learning; Female; Macaca mulatta/*psychology; *Memory; *Proactive Inhibition; Random Allocation; *Reversal Learning |
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Abstract |
Rhesus monkeys received concurrent within-session training on eight, two-choice object pairs and then underwent successive reversals of these problems. Initially, reversals required about six times more training than acquisition with no improvement over seven successive reversals. Surprisingly, performance on these eight problems was unimpaired if they were embedded in different eight-problem tasks, thereby indicating a release from proactive interference. When the original eight problems again underwent successive reversal, no improvement was seen over seven reversals, although there was significantly less error-per-reversal than in the initial test. Subsequently, monkeys appeared to be developing a learning set for successive reversal because performance on successive reversal of eight novel problems was not different from that seen with the old familiar task. Set acquisition was confirmed when proficient reversal was eventually achieved on both old and new concurrent tasks. Thus, “concurrent reversal set” did develop, but it required arduous training to overcome proactive interference effects on memory. The ubiquitous influence of measurement context on organization of monkey memory was noted. |
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Kent State University, Kent, Ohio 44242, USA. rtreichl@kent.edu |
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1435-9448 |
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PMID:15365875 |
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Equine Behaviour @ team @ |
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2512 |
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Author |
Bloom, P. |
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Title |
Behavior. Can a dog learn a word? |
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Journal Article |
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Year |
2004 |
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Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
304 |
Issue |
5677 |
Pages |
1605-1606 |
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Keywords |
Animals; Child; Child, Preschool; *Dogs; Humans; *Learning; *Memory; *Vocabulary |
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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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no |
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28 |
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Hampton, R.R.; Zivin, A.; Murray, E.A. |
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Title |
Rhesus monkeys (Macaca mulatta) discriminate between knowing and not knowing and collect information as needed before acting |
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Journal Article |
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Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
7 |
Issue |
4 |
Pages |
239-246 |
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Keywords |
Animals; Association Learning; *Awareness; Choice Behavior; *Concept Formation; *Discrimination Learning; Female; Macaca mulatta/*psychology; Male; *Memory, Short-Term; Observation |
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Abstract |
Humans use memory awareness to determine whether relevant knowledge is available before acting, as when we determine whether we know a phone number before dialing. Such metacognition, or thinking about thinking, can improve selection of appropriate behavior. We investigated whether rhesus monkeys ( Macaca mulatta) are capable of a simple form of metacognitive access to the contents of short-term memory. Monkeys chose among four opaque tubes, one of which concealed food. The tube containing the reward varied randomly from trial to trial. On half the trials the monkeys observed the experimenter baiting the tube, whereas on the remaining trials their view of the baiting was blocked. On each trial, monkeys were allowed a single chance to select the tube containing the reward. During the choice period the monkeys had the opportunity to look down the length of each tube, to determine if it contained food. When they knew the location of the reward, most monkeys chose without looking. In contrast, when ignorant, monkeys often made the effort required to look, thereby learning the location of the reward before choosing. Looking improved accuracy on trials on which monkeys had not observed the baiting. The difference in looking behavior between trials on which the monkeys knew, and trials on which they were ignorant, suggests that rhesus monkeys discriminate between knowing and not knowing. This result extends similar observations made of children and apes to a species of Old World monkey, suggesting that the underlying cognitive capacities may be widely distributed among primates. |
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Section on the Neurobiology of Learning and Memory, Laboratory of Neuropsychology, National Institute of Mental Health, NIH, Bethesda, MD 20892-4415, USA. robert@ln.nimh.nih.gov |
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1435-9448 |
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PMID:15105996 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2525 |
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Author |
Emery, N.J.; Dally, J.M.; Clayton, N.S. |
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Title |
Western scrub-jays ( Aphelocoma californica) use cognitive strategies to protect their caches from thieving conspecifics |
Type |
Journal Article |
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Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
7 |
Issue |
1 |
Pages |
37-43 |
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Keywords |
Animals; Birds/*physiology; Feeding Behavior/*physiology; Female; *Food; Male; *Memory |
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Abstract |
Food caching birds hide food and recover the caches when supplies are less abundant. There is, however, a risk to this strategy because the caches are susceptible to pilfering by others. Corvids use a number of different strategies to reduce possible cache theft. Scrub-jays with previous experience of pilfering other's caches cached worms in two visuospatially distinct caching trays either in private or in the presence of a conspecific. When these storers had cached in private, they subsequently observed both trays out of reach of a conspecific. When these storers had cached in the presence of a conspecific, they subsequently watched the observer pilfering from one of the trays while the other tray was placed in full view, but out of reach. The storers were then allowed to recover the remaining caches 3 h later. Jays cached more worms when they were observed during caching. At the time of recovery, they re-cached more than if they had cached in private, selectively re-caching outside of the trays in sites unbeknown to potential thieves. In addition, after a single pilfering trial, the jays switched their recovery strategy from predominantly checking their caches (i.e. returning to a cache site to see whether the food remained there) to predominantly eating them. Re-caching remained constant across the three trials. These results suggest that scrub-jays use flexible, cognitive caching and recovery strategies to aid in reducing potential future pilfering of caches by conspecifics. |
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Sub-department of Animal Behaviour, University of Cambridge, High Street, CB3 8AA Madingley, Cambs, UK. nje23@cam.ac.uk |
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1435-9448 |
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PMID:12827547 |
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no |
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Call Number |
Equine Behaviour @ team @ |
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2566 |
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Author |
Neiworth, J.J.; Steinmark, E.; Basile, B.M.; Wonders, R.; Steely, F.; DeHart, C. |
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Title |
A test of object permanence in a new-world monkey species, cotton top tamarins (Saguinus oedipus) |
Type |
Journal Article |
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Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
6 |
Issue |
1 |
Pages |
27-37 |
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Keywords |
Animals; Feeding Behavior; Female; Male; *Memory; *Saguinus; *Visual Perception |
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Abstract |
Cotton top tamarins were tested in visible and invisible displacement tasks in a method similar to that used elsewhere to test squirrel monkeys and orangutans. All subjects performed at levels significantly above chance on visible ( n=8) and invisible ( n=7) displacements, wherein the tasks included tests of the perseverance error, tests of memory in double and triple displacements, and “catch” trials that tested for the use of the experimenter's hand as a cue for the correct cup. Performance on all nine tasks was significantly higher than chance level selection of cups, and tasks using visible displacements generated more accurate performance than tasks using invisible displacements. Performance was not accounted for by a practice effect based on exposure to successive tasks. Results suggest that tamarins possess stage 6 object permanence capabilities, and that in a situation involving brief exposure to tasks and foraging opportunities, tracking objects' movements and responding more flexibly are abilities expressed readily by the tamarins. |
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Department of Psychology, Carleton College, MN 55057, Northfield, USA. jneiwort@carleton.edu |
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1435-9448 |
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PMID:12658533 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2583 |
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Author |
Fiset, S.; Beaulieu, C.; Landry, F. |
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Title |
Duration of dogs' (Canis familiaris) working memory in search for disappearing objects |
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Journal Article |
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Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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6 |
Issue |
1 |
Pages |
1-10 |
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Animals; Dogs/*psychology; *Exploratory Behavior; Female; Male; *Memory; Visual Perception |
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Two experiments explored the duration of dogs' working memory in an object permanence task: a delay was introduced between the disappearance of a moving object behind a box and the beginning of the search by the animal. In experiment 1, the dogs were tested with retention intervals of 0, 10, 30, and 60 s. Results revealed that the dogs' accuracy declined as a function of the length of the retention interval but remained above chance for each retention interval. In experiment 2, with new subjects, longer retention intervals (0, 30, 60, 120, and 240 s) were presented to the dogs. Results replicated findings from experiment 1 and revealed that the dogs' accuracy remained higher than chance level with delays up to 240 s. In both experiments, the analysis of errors also showed that the dogs searched as a function of the proximity of the target box and were not subject to intertrial proactive interference. In the discussion, we explore different alternatives to explain why dogs' search behaviour for hidden objects decreased as a function of the retention intervals. |
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Secteur Sciences Humaines, Universite de Moncton, Campus d'Edmundston, E3V 2S8, Edmundston, New Brunswick, Canada. sfiset@umce.ca |
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1435-9448 |
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PMID:12658530 |
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Call Number |
Equine Behaviour @ team @ |
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2586 |
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Permanent link to this record |
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Author |
Zentall, T.R. |
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Title |
A cognitive behaviorist approach to the study of animal behavior |
Type |
Journal Article |
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Year |
2002 |
Publication |
The Journal of general psychology |
Abbreviated Journal |
J Gen Psychol |
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Volume |
129 |
Issue |
4 |
Pages |
328-363 |
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Animals; *Attention; *Behavior, Animal; *Cognition; Learning; *Memory; Social Behavior |
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Abstract |
Traditional psychological approaches to animal learning and behavior have involved either the atheoretical behaviorist approach proposed by B. F. Skinner (1938), in which input-output relations are described in response to environmental manipulations, or the theoretical behaviorist approach offered by C. L Hull (1943), in which associations mediated by several hypothetical constructs and intervening variables are formed between stimuli and responses. Recently, the application of a cognitive behaviorist approach to animal learning and behavior has been found to have considerable value as a research tool. This perspective has grown out of E. C. Tolman's cognitive approach to learning in which behavior is mediated by mechanisms that are not directly observable but can be inferred from the results of critical experiments. In the present article, the author presents several examples of the successful application of the cognitive behaviorist approach. In each case, the experiments have been designed to distinguish between more traditional mechanisms and those mediated by hypothesized internal representations. These examples were selected because the evidence suggests that some form of active cognitive organization is needed to account for the behavioral results. |
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Department of Psychology, University of Kentucky, Lexington 40506, USA. Zentall@uky.edu |
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0022-1309 |
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PMID:12494989 |
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refbase @ user @ |
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214 |
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Permanent link to this record |
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Author |
Treichler, F.R.; Van Tilburg, D. |
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Title |
Premise-pair training for valid tests of serial list organization in macaques |
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Journal Article |
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Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
5 |
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2 |
Pages |
97-105 |
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Animals; *Discrimination Learning; Female; Macaca/*psychology; *Memory |
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This study evaluated the role of several different training procedures on (1) efficiency of acquisition and (2) organizational characteristics of memory for lists that could be serially ordered. Five macaque monkeys were trained via two-choice object discriminations in a formboard apparatus on several five-item-series tasks that provided different levels of intrasession conditionality. Although ease of acquisition differed for subsets of the constituent pairs, concurrent inclusion of the four premise pairs that defined a list required equivalent amounts of training on every task. All training procedures yielded similar retention-test performances and showed common organizational properties (on both error and latency measures) consistent with the view that lists were retained as internally represented ordered series. Test outcomes emphasized the need for integrated exposition of all concurrent conditional relationships to allow appropriate tests of serial organization. However, if given such training, the monkeys revealed integrated serial memory even though they had never seen many of the possible novel combinations of list items. In overview, their performances offered further definition of the procedures required for valid assessment of inferential properties in comparative cognition. |
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Department of Psychology, Kent State University, Kent, OH 44242-0001, USA. rtreichl@kent.edu |
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1435-9448 |
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PMID:12150042 |
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Equine Behaviour @ team @ |
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2602 |
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Schwartz, B.L.; Colon, M.R.; Sanchez, I.C.; Rodriguez, I.A.; Evans, S. |
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Title |
Single-trial learning of “what” and “who” information in a gorilla (Gorilla gorilla gorilla): implications for episodic memory |
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Journal Article |
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Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
5 |
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2 |
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85-90 |
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Animals; Cognition; Gorilla gorilla/*psychology; *Learning; Male; *Memory; Perception; Reinforcement Schedule |
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Single-trial learning and long-term memory of “what” and “who” information were examined in an adult gorilla (Gorilla gorilla gorilla). We presented the gorilla with a to-be-remembered food item at the time of study. In Experiment 1, following a retention interval of either approximately 7 min or 24 h, the gorilla responded with one of five cards, each corresponding to a particular food. The gorilla was accurate on 70% of the short retention-interval trials and on 82% of the long retention-interval trials. In Experiment 2, the food stimulus was provided by one of two experimenters, each of whom was represented by a card. The gorilla identified the food (55% of the time) and the experimenter (82% of the time) on the short retention-interval trials. On the long retention-interval trials, the gorilla was accurate for the food (73%) and for the person (87%). The results are interpreted in light of theories of episodic memory. |
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Department of Psychology, Florida International University, University Park, Miami, FL 33199, USA. schwartb@fiu.edu |
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1435-9448 |
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PMID:12150040 |
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Equine Behaviour @ team @ |
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2604 |
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