| Records |
| Author |
Hauber, M.E.; Sherman, P.W. |
| Title |
Designing and interpreting experimental tests of self-referent phenotype matching |
Type |
Journal Article |
| Year |
2003 |
Publication  |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
6 |
Issue |
1 |
Pages |
69-71 |
| Keywords |
Animals; Birds; Body Constitution; Color; Humans; Pedigree; *Perception; Phenotype; *Recognition (Psychology); Research Design; *Self Psychology |
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| Address |
Department of Neurobiology and Behavior, Cornell University, Ithaca, NY 14853-2702, USA |
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1435-9448 |
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| Notes |
PMID:12658536 |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2580 |
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| Author |
Caldwell, C.A.; Whiten, A. |
| Title |
Evolutionary perspectives on imitation: is a comparative psychology of social learning possible? |
Type |
Journal Article |
| Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
5 |
Issue |
4 |
Pages |
193-208 |
| Keywords |
Animals; *Behavior, Animal; Evolution; Humans; *Imitative Behavior; Learning; Models, Animal |
| Abstract |
Studies of imitation in animals have become numerous in recent times, but do they contribute to a comparative psychology of social learning? We review this burgeoning field to identify the problems and prospects for such a goal. Difficulties of two main kinds are identified. First, researchers have tackled questions about social learning from at least three very different theoretical perspectives, the “phylogenetic”, “animal model”, and “adaptational”. We examine the conflicts between them and consider the scope for integration. A second difficulty arises in the methodological approaches used in the discipline. In relation to one of these – survey reviews of published studies – we tabulate and compare the contrasting conclusions of nine articles that together review 36 studies. The basis for authors' disagreements, including the matters of perceptual opacity, novelty, sequential structure, and goal representation, are examined. In relation to the other key method, comparative experimentation, we identify 12 studies that have explicitly compared species' imitative ability on similar tasks. We examine the principal problems of comparing like with like in these studies and consider solutions, the most powerful of which we propose to be the use of a systematic range of task designs, rather than any single “gold standard” task. |
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School of Psychology, Washington Singer Laboratories, University of Exeter, Exeter EX4 4QG, UK. C.A.Caldwell@exeter.ac.uk |
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1435-9448 |
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| Notes |
PMID:12461597 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2593 |
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| Author |
Bjorklund, D.F.; Yunger, J.L.; Bering, J.M.; Ragan, P. |
| Title |
The generalization of deferred imitation in enculturated chimpanzees (Pan troglodytes) |
Type |
Journal Article |
| Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
5 |
Issue |
1 |
Pages |
49-58 |
| Keywords |
Age Factors; Animals; Behavior, Animal; Humans; *Imitative Behavior; Pan troglodytes/physiology/*psychology; Parenting; Species Specificity |
| Abstract |
Deferred imitation of object-related actions and generalization of imitation to similar but not identical tasks was assessed in three human-reared (enculturated) chimpanzees, ranging in age from 5 to 9 years. Each ape displayed high levels of deferred imitation and only slightly lower levels of generalization of imitation. The youngest two chimpanzees were more apt to generalize the model's actions when they had displayed portions of the target behaviors at baseline, consistent with the idea that learning is more likely to occur when working within the “zone of proximal development.” We argue that generalization of imitation is the best evidence to date of imitative learning in chimpanzees. |
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Department of Psychology, Florida Atlantic University, 777 Glades Road, Boca Raton, FL 33431-0991, USA. dbjorklund@fau.edu |
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1435-9448 |
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| Notes |
PMID:11957402 |
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no |
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Equine Behaviour @ team @ |
Serial |
2610 |
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| Author |
Maros, K.; Gácsi, M.; Miklósi, Á |
| Title |
Comprehension of human pointing gestures in horses ( Equus caballus ) |
Type |
Journal Article |
| Year |
2008 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
11 |
Issue |
3 |
Pages |
457-466 |
| Keywords |
Human-animal communication – Pointing – Horse |
| Abstract |
Abstract Twenty domestic horses (Equus caballus) were tested for their ability to rely on different human gesticular cues in a two-way object choice task. An experimenter hid food under one of two bowls and after baiting, indicated the location of the food to the subjects by using one of four different cues. Horses could locate the hidden reward on the basis of the distal dynamic-sustained, proximal momentary and proximal dynamic-sustained pointing gestures but failed to perform above chance level when the experimenter performed a distal momentary pointing gesture. The results revealed that horses could rely spontaneously on those cues that could have a stimulus or local enhancement effect, but the possible comprehension of the distal momentary pointing remained unclear. The results are discussed with reference to the involvement of various factors such as predisposition to read human visual cues, the effect of domestication and extensive social experience and the nature of the gesture used by the experimenter in comparative investigations. |
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no |
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Equine Behaviour @ team @ |
Serial |
4388 |
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| Author |
Gácsi, M.; Kara, E.; Belényi, B.; Topál, J.; Miklósi, Á. |
| Title |
The effect of development and individual differences in pointing comprehension of dogs |
Type |
Journal Article |
| Year |
2009 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
12 |
Issue |
3 |
Pages |
471-479 |
| Keywords |
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 |
| Abstract |
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. |
| Address |
Department of Ethology, Eotvos University, Budapest, Hungary. gm.art@t-online.hu |
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1435-9456 |
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| Notes |
PMID:19130102 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
4969 |
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| Author |
Smith, B.; Litchfield, C. |
| Title |
Dingoes (Canis dingo) can use human social cues to locate hidden food |
Type |
Journal Article |
| Year |
2010 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
13 |
Issue |
2 |
Pages |
367-376 |
| Keywords |
Dingo – Dog – Human pointing – Object-choice task – Social cognition – Domestication |
| Abstract |
Abstract There is contention concerning the role that domestication plays in the responsiveness of canids to human social cues, with most studies investigating abilities of recognized domestic dog breeds or wolves. Valuable insight regarding the evolution of social communication with humans might be gained by investigating Australian dingoes, which have an early history of domestication, but have been free-ranging in Australia for approximately 3500–5000 years. Seven ‘pure’ dingoes were tested outdoors by a familiar experimenter using the object-choice paradigm to determine whether they could follow nine human communicative gestures previously tested with domestic dogs and captive wolves. Dingoes passed all cues significantly above control, including the “benchmark” momentary distal pointing, with the exception of gaze only, gaze and point, and pointing from the incorrect location. Dingo performance appears to lie somewhere between wolves and dogs, which suggests that domestication may have played a role in their ability to comprehend human gestures. |
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no |
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Equine Behaviour @ team @ |
Serial |
5116 |
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| Author |
Sankey, C.; Richard-Yris, M.-A.; Henry, S.; Fureix, C.; Nassur, F.; Hausberger, M. |
| Title |
Reinforcement as a mediator of the perception of humans by horses (Equus caballus) |
Type |
Journal Article |
| Year |
2010 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
13 |
Issue |
5 |
Pages |
753-764-764 |
| Keywords |
Perception of humans – Human/animal relationship – Positive reinforcement – Negative reinforcement – Equus caballus |
| Abstract |
A central question in the interspecific human/animal relationship is how domestic animals perceive humans as a significant element of their environment. In this study, we tested the hypothesis that the use of positive or negative reinforcement in horse training may have consequences on the animals’ perception of humans, as a positive, negative or neutral element. Two groups of ponies were trained to walk backwards in response to a vocal order using either positive or negative reinforcement. Heart rate monitors and behavioural observations were used to assess the animals’ perception of humans on the short (just after training) and long (5 months later) terms. The results showed that the type of reinforcement had a major effect on the subsequent animals’ perception of familiar and unfamiliar humans. Negative reinforcement was rapidly associated with an increased emotional state, as revealed by heart rate measurements and behavioural observations (head movements and ears laid back position). Its use led the ponies to seek less contact with humans. On the contrary, ponies trained with positive reinforcement showed an increased interest in humans and sought contact after training. This is especially remarkable as it was reached in a maximum of 5 sessions of 1 to 3 min (i.e. 5 to 15 min) and had lasting effects (visible after 5 months). Even learning was positively influenced by positive reinforcement. Overall, horses seem capable of associating humans to particular experiences and display extended long-term memory abilities. |
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Springer Berlin / Heidelberg |
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1435-9448 |
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no |
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Equine Behaviour @ team @ |
Serial |
5175 |
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| Author |
Krueger, K.; Flauger, B.; Farmer, K.; Maros, K. |
| Title |
Horses (Equus caballus) use human local enhancement cues and adjust to human attention |
Type |
Journal Article |
| Year |
2011 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
14 |
Issue |
2 |
Pages |
187-201 |
| Keywords |
Human–horse interaction – Horse – Attention-reading – Position – Familiarity |
| Abstract |
This study evaluates the horse (Equus caballus) use of human local enhancement cues and reaction to human attention when making feeding decisions. The superior performance of dogs in observing human states of attention suggests this ability evolved with domestication. However, some species show an improved ability to read human cues through socialization and training. We observed 60 horses approach a bucket with feed in a three-way object-choice task when confronted with (a) an unfamiliar or (b) a familiar person in 4 different situations: (1) squatting behind the bucket, facing the horse (2) standing behind the bucket, facing the horse (3) standing behind the bucket in a back-turned position, gazing away from the horse and (4) standing a few meters from the bucket in a distant, back-turned position, again gazing away from the horse. Additionally, postures 1 and 2 were tested both with the person looking permanently at the horse and with the person alternating their gaze between the horse and the bucket. When the person remained behind the correct bucket, it was chosen significantly above chance. However, when the test person was turned and distant from the buckets, the horses’ performance deteriorated. In the turned person situations, the horses approached a familiar person and walked towards their focus of attention significantly more often than with an unfamiliar person. Additionally, in the squatting and standing person situations, some horses approached the person before approaching the correct bucket. This happened more with a familiar person. We therefore conclude that horses can use humans as a local enhancement cue independently of their body posture or gaze consistency when the persons remain close to the food source and that horses seem to orientate on the attention of familiar more than of unfamiliar persons. We suggest that socialization and training improve the ability of horses to read human cues. |
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Springer Berlin / Heidelberg |
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1435-9448 |
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Equine Behaviour @ team @ |
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5178 |
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Merola, I.; Lazzaroni, M.; Marshall-Pescini, S.; Prato-Previde, E. |
| Title |
Social referencing and cat–human communication |
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Journal Article |
| Year |
2015 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
18 |
Issue |
3 |
Pages |
639-648 |
| Keywords |
Social referencing; Cats; Gaze alternation; Social learning; Human–cat communication |
| Abstract |
Cats’ (Felis catus) communicative behaviour towards humans was explored using a social referencing paradigm in the presence of a potentially frightening object. One group of cats observed their owner delivering a positive emotional message, whereas another group received a negative emotional message. The aim was to evaluate whether cats use the emotional information provided by their owners about a novel/unfamiliar object to guide their own behaviour towards it. We assessed the presence of social referencing, in terms of referential looking towards the owner (defined as looking to the owner immediately before or after looking at the object), the behavioural regulation based on the owner’s emotional (positive vs negative) message (vocal and facial), and the observational conditioning following the owner’s actions towards the object. Most cats (79 %) exhibited referential looking between the owner and the object, and also to some extent changed their behaviour in line with the emotional message given by the owner. Results are discussed in relation to social referencing in other species (dogs in particular) and cats’ social organization and domestication history. |
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Springer Berlin Heidelberg |
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1435-9448 |
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Equine Behaviour @ team @ |
Serial |
5885 |
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| Author |
Defolie, C.; Malassis, R.; Serre, M.; Meunier, H. |
| Title |
Tufted capuchins (Cebus apella) adapt their communicative behaviour to human’s attentional states |
Type |
Journal Article |
| Year |
2015 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
18 |
Issue |
3 |
Pages |
747-755 |
| Keywords |
Gestural communication; Intentionality; Non-human primates; Social cognition; Attention; Pointing |
| Abstract |
Animal communication has become a widely studied field of research, especially because of the associated debates on the origin of human language. Due to their phylogenetic proximity with humans, non-human primates represent a suitable model to investigate the precursors of language. This study focuses on the perception of the attentional states of others, an important prerequisite to intentional communication. We investigated whether capuchins (Cebus apella) produce a learnt pointing gesture towards a hidden and unreachable food reward as a function of the attentional status of the human experimenter. For that purpose, we tested five subjects that we first trained to indicate by a pointing gesture towards the human partner the position of a reward hidden by an assistant. Then, capuchins were tested in two experimental conditions randomly ordered. In the first condition—motivation trial—the experimenter was attentive to the subject gestures and rewarded him immediately when it pointed towards the baited cylinder. During the second condition—test trial—the experimenter adopted one of the following attention states and the subject was rewarded after 10 s has elapsed, regardless of the subject’s behaviour. Five attentional states were tested: (1) experimenter absent, (2) experimenter back to the monkey, (3) experimenter’s head away, (4) experimenter watching above the monkey, and (5) experimenter watching the monkey face. Our results reveal a variation in our subjects’ communicative behaviours with a discrimination of the different postural clues (body and head orientation) available in our experimental conditions. This study suggests that capuchins can flexibly use a communicative gesture to adapt to the attentional state of their partner and provides evidence that acquired communicative gestures of monkeys might be used intentionally. |
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Springer Berlin Heidelberg |
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1435-9448 |
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Equine Behaviour @ team @ |
Serial |
5886 |
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