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Author |
Markman, E.M.; Abelev, M. |
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Title  |
Word learning in dogs? |
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Journal Article |
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Year |
2004 |
Publication |
Trends in Cognitive Sciences |
Abbreviated Journal |
Trends. Cognit. Sci. |
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Volume |
8 |
Issue |
11 |
Pages |
479-81; discussion 481 |
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Keywords |
Animals; Association Learning; Dogs; *Learning; *Verbal Learning; *Vocabulary |
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Abstract |
In a recent paper, Kaminski, Call and Fischer report pioneering research on word-learning in a dog. In this commentary we suggest ways of distinguishing referential word use from mere association. We question whether the dog is reasoning by exclusion and, if so, compare three explanations – learned heuristics, default assumptions, and pragmatic reasoning – as they apply to children and might apply to dogs. Kaminski et al.'s work clearly raises important questions about the origins and basis of word learning and social cognition. |
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Department of Psychology, Stanford University, Bldg 420, Stanford, CA 94305-2130, USA |
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1364-6613 |
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PMID:15491899 |
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no |
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refbase @ user @ |
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274 |
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Author |
Byrne, R.W.; Bates, L.A. |
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Title |
Why are animals cognitive? |
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Journal Article |
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Year |
2006 |
Publication |
Current Biology : CB |
Abbreviated Journal |
Curr Biol |
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Volume |
16 |
Issue |
12 |
Pages |
R445-8 |
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Keywords |
Animals; Arachnida/physiology; *Association Learning; *Behavior, Animal; *Cognition; Cooperative Behavior; Falconiformes/physiology; Pan troglodytes/physiology; Parrots/physiology; Passeriformes/physiology |
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Centre for Social Learning and Cognitive Evolution, and Scottish Primate Research Group, School of Psychology, University of St Andrews, Fife KY16 9JP, Scotland |
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0960-9822 |
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PMID:16781995 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4708 |
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Author |
Ottoni, E.B.; de Resende, B.D.; Izar, P. |
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Title |
Watching the best nutcrackers: what capuchin monkeys (Cebus apella) know about others' tool-using skills |
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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 |
4 |
Pages |
215-219 |
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Keywords |
Animals; *Association Learning; Cebus/*psychology; *Feeding Behavior; Female; Male; Nuts; *Problem Solving |
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Abstract |
The present work is part of a decade-long study on the spontaneous use of stones for cracking hard-shelled nuts by a semi-free-ranging group of brown capuchin monkeys (Cebus apella). Nutcracking events are frequently watched by other individuals--usually younger, less proficient, and that are well tolerated to the point of some scrounging being allowed by the nutcracker. Here we report findings showing that the choice of observational targets is an active, non-random process, and that observers seem to have some understanding of the relative proficiency of their group mates, preferentially watching the more skilled nutcrackers, which enhances not only scrounging payoffs, but also social learning opportunities. |
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Laboratory of Cognitive Ethology, Department of Experimental Psychology, Institute of Psychology, University of Sao Paulo, Brazil. ebottoni@usp.br |
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1435-9448 |
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PMID:15719240 |
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no |
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Call Number |
refbase @ user @ |
Serial |
355 |
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Author |
Shettleworth, S.J. |
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Title |
Varieties of learning and memory in animals |
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Journal Article |
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Year |
1993 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
19 |
Issue |
1 |
Pages |
5-14 |
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Keywords |
Animals; Association Learning; Birds; Conditioning, Classical; Evolution; Imprinting (Psychology); *Learning; *Memory; Social Environment; Species Specificity; Taste |
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Abstract |
It is often assumed that there is more than one kind of learning--or more than one memory system--each of which is specialized for a different function. Yet, the criteria by which the varieties of learning and memory should be distinguished are seldom clear. Learning and memory phenomena can differ from one another across species or situations (and thus be specialized) in a number of different ways. What is needed is a consistent theoretical approach to the whole range of learning phenomena, and one is explored here. Parallels and contrasts in the study of sensory systems illustrate one way to integrate the study of general mechanisms with an appreciation of species-specific adaptations. |
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Department of Psychology, University of Toronto, Ontario, Canada |
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0097-7403 |
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PMID:8418217 |
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no |
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refbase @ user @ |
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380 |
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Author |
Cleveland, A.; Rocca, A.M.; Wendt, E.L.; Westergaard, G.C. |
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Title |
Transport of tools to food sites in tufted capuchin monkeys (Cebus apella) |
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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 |
3 |
Pages |
193-198 |
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Keywords |
Animals; *Association Learning; Cebus/*psychology; *Concept Formation; *Feeding Behavior; Female; Male; *Problem Solving |
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Abstract |
Tool use and transport represent cognitively important aspects of early hominid evolution, and nonhuman primates are often used as models to examine the cognitive, ecological, morphological and social correlates of these behaviors in order to gain insights into the behavior of our early human ancestors. In 2001, Jalles-Filho et al. found that free-ranging capuchin monkeys failed to transport tools (stones) to food sites (nuts), but transported the foods to the tool sites. This result cast doubt on the usefulness of Cebus to model early human tool-using behavior. In this study, we examined the performance of six captive tufted capuchin monkeys (Cebus apella) in a tool transport task. Subjects were provided with the opportunity to transport two different tools to fixed food reward sites when the food reward was visible from the tool site and when the food reward was not visible from the tool site. We found that the subjects quickly and readily transported probing tools to an apparatus baited with syrup, but rarely transported stones to a nut-cracking apparatus. We suggest that the performance of the capuchins here reflects an efficient foraging strategy, in terms of energy return, among wild Cebus monkeys. |
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Alpha Genesis, 95 Castle Hall Road, P.O. Box 557, Yemassee, SC 29945, USA |
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1435-9448 |
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PMID:15022055 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2539 |
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Author |
Ducoing, A.M.; Thierry, B. |
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Title |
Tool-use learning in Tonkean macaques (Macaca tonkeana) |
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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 |
103-113 |
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Keywords |
Animals; *Association Learning; *Behavior, Animal; Cognition; Imitative Behavior; *Intelligence; Macaca/*psychology; Male; *Motor Skills |
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Abstract |
The transmission of tool use is a rare event in monkeys. Such an event arose in a group of semi-free-ranging Tonkean macaques (Macaca tonkeana) in which leaning a pole against the park's fence (branch leaning) appeared and spread to several males. This prompted us to test individual and social learning of this behavior in seven young males. In the first experiment, three males learned individually to obtain a food reward using a wooden pole as a climbing tool. They began using the pole to retrieve the reward only when they could alternatively experience acting on the object and reaching the target. In a second experiment, we first tested whether four other subjects could learn branch leaning after having observed a group-mate performing the task. Despite repeated opportunities to observe the demonstrator, they did not learn to use the pole as a tool. Hence we exposed the latter subjects to individual learning trials and they succeeded in the task. Tool use was not transmitted in the experimental situation, which contrasts with observations in the park. We can conclude that the subjects were not able to recognize the target as such. It is possible that they recognized it and learned the task individually when we alternated the opportunity to act upon the object and to reach the reward. This suggests that these macaques could then have associated the action they exercised upon the pole and the use of the pole as a means to reach the reward. |
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Centre d'Ecologie et Physiologie Energetiques, Centre National de la Recherche Scientifique, 7 rue de l'Universite, 67000, Strasbourg, France |
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1435-9448 |
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PMID:15449102 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2508 |
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Author |
Scheumann, M.; Call, J. |
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Title |
The use of experimenter-given cues by South African fur seals (Arctocephalus pusillus) |
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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 |
224-230 |
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Keywords |
Animal Communication; Animals; *Association Learning; *Cues; Female; Fur Seals/*psychology; *Gestures; Humans; *Imitative Behavior; Nonverbal Communication; Social Behavior; Species Specificity |
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Abstract |
Dogs can use a variety of experimenter-given cues such as pointing, head direction, and eye direction to locate food hidden under one of several containers. Some authors have proposed that this is a result of the domestication process. In this study we tested four captive fur seals in a two alternative object choice task in which subjects had to use one of the following experimenter-given cues to locate the food: (1) the experimenter pointed and gazed at one of the objects, (2) the experimenter pointed at only one of the objects, (3) the experimenter gazed at only one of the objects, (4) the experimenter glanced at only one of the objects, (5) the experimenter pointed and gazed at one of the objects but was sitting closer to one object than to the other, (6) the experimenter pointed only with the index finger at one of the objects, (7) the experimenter presented a replica of one of the objects. The fur seals were able to use cues which involved a fully exposed arm or a head direction, but failed to use glance only, the index finger pointing and the object replica cues. The results showed that a domestication process was not necessary to develop receptive skills to cues given by an experimenter. Instead, we hypothesize that close interactions with humans prior to testing enabled fur seals to uses ome gestural cues without formal training. We also analyzed the behavior of the seals depending on the level of difficulty of the task. Behavioral signs of hesitation increased with task difficulty. This suggests that the fur seals were sensitive to task difficulty. |
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Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany. Marina.Scheumann@tiho-hannover.de |
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1435-9448 |
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PMID:15057598 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2536 |
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Author |
Gazit, I.; Goldblatt, A.; Terkel, J. |
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Title |
The role of context specificity in learning: the effects of training context on explosives detection in dogs |
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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 |
3 |
Pages |
143-150 |
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Animals; *Association Learning; Conditioning, Classical; *Discrimination Learning; Dogs; *Environment; *Generalization, Stimulus; *Smell |
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Abstract |
Various experiments revealed that if an animal learns a stimulus-response-reinforcer relationship in one context and is then tested in another context there is usually a lessening of stimulus control, and the same discriminative stimuli that reliably controlled the behavior in the first context will have less effect in the new context. This reduction in performance is known as the “context shift effect.” The effect of changing context on the probability of detecting explosives was investigated in seven highly trained explosives detection dogs (EDDs). In experiment 1 the dogs were trained alternately on path A, which always had five hidden explosives, and on a very similar path B, which never had any explosives. Within a few sessions the dogs showed a significant decrease in search behavior on path B, but not on path A. In experiment 2 the same dogs were trained only on path B with a target density of one explosive hidden every 4th day. The probability of the dogs now detecting the explosive was found to be significantly lower than in experiment 1. In experiment 3 the effect of the low target density as used in experiment 2 was investigated on a new but very similar path C. Both the detection probability for the one explosive every 4th day on the new path and the motivation to search were significantly higher than found in experiment 2. Finally, in experiment 4, an attempt was made to recondition the dogs to search on path B. Although trained for 12 daily sessions with one explosive hidden every session, the dogs failed to regain the normal levels of motivation they had shown on both new paths and on the paths that they knew usually contained explosives. The findings reveal that even a very intensively trained EDD will rapidly learn that a specific stretch of path does not contain explosives. The dog will then be less motivated to search and will miss newly placed targets. This learning is specific to the formerly always-clean path and is to some extent irreversible. However, the dog will search and detect normally on new paths even if they are very similar to the always-clean path. The data are discussed in terms of variables affecting renewal. The results suggest that following training designed to make a behavior “context independent,” any extinction training will not generalize beyond that specific context used during the extinction training. In addition, if the behavior is extinguished in a specific context, it will be very difficult to restore that behavior in that context. These conclusions should be considered by anyone attempting to extinguish well-established trans-context behaviors. |
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Department of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 69978, Israel. iritgazi@post.tau.ac.il |
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1435-9448 |
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PMID:15449101 |
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no |
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Call Number |
Equine Behaviour @ team @ |
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2509 |
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Author |
O'Connell, S.; Dunbar, R.I.M. |
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Title |
The perception of causality in chimpanzees (Pan spp.) |
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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 |
1 |
Pages |
60-66 |
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Animals; *Association Learning; Awareness; *Concept Formation; Female; *Habituation, Psychophysiologic; Male; Pan paniscus/*psychology; Pan troglodytes/*psychology; Perception |
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Abstract |
Chimpanzees (Pan spp.) were tested on a habituation/dishabituation paradigm that was originally developed to test for comprehension of causality in very young human infants. Three versions of the test were used: a food item being moved by a hand, a human pushing another human off a chair to obtain a food item, and a film clip of natural chimpanzee behaviour (capturing and eating a monkey). Chimpanzees exhibited similar results to those obtained with human infants, with significantly elevated levels of looking on the dishabituation trials. Since the level of response was significantly greater on natural/unnatural sequences than on unnatural/natural sequences, we conclude that the chimpanzees were not responding just to novelty but rather to events that infringed their sense of natural causation. |
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Evolutionary Psychology Research Group, School of Biological Sciences, Biosciences Building, University of Liverpool, Liverpool, L69 7ZB, UK |
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1435-9448 |
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PMID:15322943 |
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Equine Behaviour @ team @ |
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2514 |
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Author |
Gácsi, M.; Kara, E.; Belényi, B.; Topál, J.; Miklósi, Á. |
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The effect of development and individual differences in pointing comprehension of dogs |
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Journal Article |
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Year |
2009 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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12 |
Issue |
3 |
Pages |
471-479 |
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Age Factors; Analysis of Variance; Animals; *Association Learning; Attention; Chi-Square Distribution; Choice Behavior; *Comprehension; *Concept Formation; Dogs/*psychology; Female; *Gestures; Humans; Male; Orientation; Statistics, Nonparametric |
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In spite of the rather different procedures actually used in comparative studies to test the ability of different species to rely on the human pointing gesture, there is no debate on the high performance of dogs in such tasks. Very little is known, however, on the course through which they acquire this ability or the probable factors influencing the process. Important developmental questions have remained unsolved and also some methodological concerns should be addressed before we can convincingly argue for one interpretation or another. In this study we tested 180 dogs of different age (from 2 months to adults) to investigate their performance in the human distal momentary pointing gesture. The results, analyzed at both the group and the individual levels, showed no difference in the performance according to age, indicating that in dogs the comprehension of the human pointing may require only very limited and rapid early learning to fully develop. Interestingly, neither the keeping conditions nor the time spent in active interaction with the owner, and not even some special (agility) training for using human visual cues, had significant effect on the success and explained individual differences. The performance of the dogs was rather stable over time: during the 20 trials within a session and even when subsamples of different age were repeatedly tested. Considering that in spite of the general success at the group level, more than half of the dogs were not successful at the individual level, we revealed alternative “decision-making rules” other than following the pointing gesture of the experimenter. |
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Department of Ethology, Eotvos University, Budapest, Hungary. gm.art@t-online.hu |
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1435-9456 |
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PMID:19130102 |
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Equine Behaviour @ team @ |
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4969 |
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