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Author |
van Schaik, C.P. |
![find book details (via ISBN) isbn](img/isbn.gif)
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Title |
Social learning and culture in animals |
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Book Chapter |
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Year |
2010 |
Publication |
Animal Behaviour: Evolution and Mechanisms |
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623-653 |
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Life Sciences |
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Most animals must learn some of the behaviours in their repertoire, and some must learn most. Although learning is often thought of as an individual exercise, in nature much learning is social, i.e. under the influence of conspecifics. Social learners acquire novel information or skills faster and at lower cost, but risk learning false information or useless skills. Social learning can be divided into learning from social information and learning through social interaction. Different species have different mechanisms of learning from social information, ranging from selective attention to the environment due to the presence of others to copying of complete motor sequences. In vertical (or oblique) social learning, naïve individuals often learn skills or knowledge from parents (or other adults), whereas horizontal social learning is from peers, either immatures or adults, and more often concerns eavesdropping and public information use. Because vertical social learning is often adaptive, maturing individuals often have a preference for it over individual exploration. The more cognitively demanding social learning abilities probably evolved in this context, in lineages where offspring show long association with parents and niches are complex. Because horizontal learning can be maladaptive, especially when perishable information has become outdated, animals must decide when to deploy social learning. Social learning of novel skills can lead to distinct traditions or cultures when the innovations are sufficiently rare and effectively transmitted socially. Animal cultures may be common but to date taxonomic coverage is insufficient to know how common. Cultural evolution is potentially powerful, but largely confined to humans, for reasons currently unknown. A general theory of culture is therefore badly needed. |
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Springer Berlin Heidelberg |
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Kappeler, P. |
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978-3-642-02624-9 |
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Equine Behaviour @ team @ |
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5268 |
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Author |
Kerth, G. |
![find book details (via ISBN) isbn](img/isbn.gif)
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Title |
Group decision-making in animal societies |
Type |
Book Chapter |
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Year |
2010 |
Publication |
Animal Behaviour: Evolution and Mechanisms |
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241-265 |
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Life Sciences |
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Individuals need to coordinate their activities to benefit from group living. Thus group decisions are essential for societies, especially if group members cooperate with each other. Models show that shared (democratic) decisions outperform unshared (despotic) decisions, even if individuals disagree about actions. This is surprising as in most other contexts, differences in individual preferences lead to sex-, age-, or kin-specific behaviour. Empirical studies testing the predictions of the theoretical models have only recently begun to emerge. This applies particularly to group decisions in fission-fusion societies, where individuals can avoid decisions that are not in their interest. After outlining the basic ideas and theoretical models on group decision-making I focus on the available empirical studies. Originally most of the relevant studies have been on social insects and fish but recently an increasing number of studies on mammals and birds have been published, including some that deal with wild long-lived animals living in complex societies. This includes societies where group members have different interests, as in most mammals, and which have been less studied compared to eusocial insects that normally have no conflict among their colony members about what to do. I investigate whether the same decision rules apply in societies with conflict and without conflict, and outline open questions that remain to be studied. The chapter concludes with a synthesis on what is known about group decision-making in animals and an outlook on what I think should be done to answer the open questions. |
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Springer Berlin Heidelberg |
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Kappeler, P. |
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978-3-642-02624-9 |
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Equine Behaviour @ team @ |
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5381 |
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Author |
Imanishi, K. |
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Title |
Identification : A process of enculturation in the subhuman society of Macaca fuscata |
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Journal Article |
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1957 |
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Primates |
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Primates |
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1 |
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1-29-29 |
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Biomedical and Life Sciences |
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Springer Japan |
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0032-8332 |
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Equine Behaviour @ team @ |
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5266 |
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Author |
Guo, K.; Meints, K.; Hall, C.; Hall, S.; Mills, D. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Left gaze bias in humans, rhesus monkeys and domestic dogs |
Type |
Journal Article |
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Year |
2009 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume ![sorted by Volume (numeric) field, ascending order (up)](img/sort_asc.gif) |
12 |
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3 |
Pages |
409-418 |
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Biomedical and Life Sciences |
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While viewing faces, human adults often demonstrate a natural gaze bias towards the left visual field, that is, the right side of the viewee’s face is often inspected first and for longer periods. Using a preferential looking paradigm, we demonstrate that this bias is neither uniquely human nor limited to primates, and provide evidence to help elucidate its biological function within a broader social cognitive framework. We observed that 6-month-old infants showed a wider tendency for left gaze preference towards objects and faces of different species and orientation, while in adults the bias appears only towards upright human faces. Rhesus monkeys showed a left gaze bias towards upright human and monkey faces, but not towards inverted faces. Domestic dogs, however, only demonstrated a left gaze bias towards human faces, but not towards monkey or dog faces, nor to inanimate object images. Our findings suggest that face- and species-sensitive gaze asymmetry is more widespread in the animal kingdom than previously recognised, is not constrained by attentional or scanning bias, and could be shaped by experience to develop adaptive behavioural significance. |
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Springer Berlin / Heidelberg |
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1435-9448 |
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Equine Behaviour @ team @ |
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5353 |
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Author |
Slobodchikoff, C.; Paseka, A.; Verdolin, J. |
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Title |
Prairie dog alarm calls encode labels about predator colors |
Type |
Journal Article |
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Year |
2009 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume ![sorted by Volume (numeric) field, ascending order (up)](img/sort_asc.gif) |
12 |
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3 |
Pages |
435-439 |
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Biomedical and Life Sciences |
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Some animals have the cognitive capacity to differentiate between different species of predators and generate different alarm calls in response. However, the presence of any addition information that might be encoded into alarm calls has been largely unexplored. In the present study, three similar-sized human females walked through a Gunnison’s prairie dog ( Cynomys gunnisoni ) colony wearing each of three different-colored shirts: blue, green, and yellow. We recorded the alarm calls and used discriminant function analysis to assess whether the calls for the different-colored shirts were significantly different. The results showed that the alarm calls for the blue and the yellow shirts were significantly different, but the green shirt calls were not significantly different from the calls for the yellow shirt. The colors that were detected, with corresponding encoding into alarm calls, reflect the visual perceptual abilities of the prairie dogs. This study suggests that prairie dogs are able to incorporate labels about the individual characteristics of predators into their alarm calls, and that the complexity of information contained in animal alarm calls may be greater than has been previously believed. |
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Springer Berlin / Heidelberg |
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1435-9448 |
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Equine Behaviour @ team @ |
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5467 |
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Author |
Haupt, M.; Eccard, J.; Winter, Y. |
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Title |
Does spatial learning ability of common voles (Microtus arvalis) and bank voles (Myodes glareolus) constrain foraging efficiency? |
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Journal Article |
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Year |
2010 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume ![sorted by Volume (numeric) field, ascending order (up)](img/sort_asc.gif) |
13 |
Issue |
6 |
Pages |
783-791-791 |
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Biomedical and Life Sciences |
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Place learning abilities represent adaptations that contribute also to foraging efficiency under given spatio-temporal conditions. We investigated if this ability in turn constrains decision making in two sympatric vole species: while the herbivorous common vole (Microtus arvalis) feeds on spatio-temporally predictable food resources (e.g. roots, tubers and shoots of plant tubers), the omnivorous bank vole (Myodes glareolus) additionally subsists on temporally unpredictable food resources (e.g. insects and seeds). Here, we compare the spatial reference memory and working memory of the two species. In an automated operant home cage with eight water places, female voles either had to learn the fixed position of non-depletable places (reference memory task) or learn and avoid previously visited water places depleted in a single visit (win-shift task). In the reference memory task, Microtus females required significantly more choices to find all water places, initially performed slightly worse than Myodes females, and displayed slightly lower asymptotic performance. Both species were highly similar in new learning of the same task. In the more complex win-shift task, asymptotic performance was significantly lower in Microtus (72% correct) than in Myodes (79%). Our results suggest that both vole species resemble each other in their efficiency to exploit habitats with low spatio-temporal complexity but may differ in their efficiency at exploiting habitats with temporally changing spatial food distributions. The results imply that spatial ability adjusted to specific food distributions may impair flexible use of habitats that differ in their food distribution and therefore, decrease a species’ chances of survival in highly dynamic environments. |
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Springer Berlin / Heidelberg |
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1435-9448 |
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Equine Behaviour @ team @ |
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5272 |
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Author |
Cartmill, E.; Byrne, R. |
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Title |
Semantics of primate gestures: intentional meanings of orangutan gestures |
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Journal Article |
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Year |
2010 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume ![sorted by Volume (numeric) field, ascending order (up)](img/sort_asc.gif) |
13 |
Issue |
6 |
Pages |
793-804-804 |
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Biomedical and Life Sciences |
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Great ape gesture has become a research topic of intense interest, because its intentionality and flexibility suggest strong parallels to human communication. Yet the fundamental question of whether an animal species’ gestures carry specific meanings has hardly been addressed. We set out a systematic approach to studying intentional meaning in the gestural communication of non-humans and apply it to a sample of orangutan gestures. We propose that analysis of meaning should be limited to gestures for which (1) there is strong evidence for intentional production and (2) the recipient’s final reaction matches the presumed goal of the signaller, as determined independently. This produces a set of successful instances of gesture use, which we describe as having goal–outcome matches. In this study, 28 orangutans in three European zoos were observed for 9 months. We distinguished 64 gestures on structural grounds, 40 of which had frequent goal–outcome matches and could therefore be analysed for meaning. These 40 gestures were used predictably to achieve one of 6 social goals: to initiate an affiliative interaction (contact, grooming, or play), request objects, share objects, instigate co-locomotion, cause the partner to move back, or stop an action. Twenty-nine of these gestures were used consistently with a single meaning. We tested our analysis of gesture meaning by examining what gesturers did when the response to their gesture did not match the gesture’s meaning. Subsequent actions of the gesturer were consistent with our assignments of meaning to gestures. We suggest that, despite their contextual flexibility, orangutan gestures are made with the expectation of specific behavioural responses and thus have intentional meanings as well as functional consequences. |
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Springer Berlin / Heidelberg |
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1435-9448 |
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Equine Behaviour @ team @ |
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5273 |
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Author |
Truppa, V.; Garofoli, D.; Castorina, G.; Piano Mortari, E.; Natale, F.; Visalberghi, E. |
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Title |
Identity concept learning in matching-to-sample tasks by tufted capuchin monkeys (Cebus apella) |
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Journal Article |
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2010 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume ![sorted by Volume (numeric) field, ascending order (up)](img/sort_asc.gif) |
13 |
Issue |
6 |
Pages |
835-848-848 |
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Biomedical and Life Sciences |
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The abstract concept of equivalence is considered one of the bases of higher-order cognition, and it has been the subject of considerable research in comparative cognition. This study examined the conditions under which tufted capuchin monkeys (Cebus apella) are able to acquire an identity concept. Six capuchin monkeys were trained to solve a visual matching-to-sample (MTS) task on the basis of perceptual identity. The acquisition of the identity rule was inferred from the subject’s ability to solve transfer tests with novel stimuli. We evaluated the ability of the capuchin monkeys to match the shape of novel stimuli after training with both several small stimulus sets (Experiment 1) and a large stimulus set (Experiment 2). Moreover, we examined the ability of capuchins to transfer the concept to novel visual dimensions, such as colour and size and to transfer to novel spatial arrangements of the stimuli (Experiment 2). We demonstrated that the ability of capuchins to match novel stimuli was improved by increasing the number of stimuli used during training (Experiments 1 and 2) and that after a widely applicable identity concept based on the stimulus shape was acquired, the capuchins were able to match stimuli according to an identity rule based on both the colour and size of the stimuli and when the spatial arrangement of the stimuli was varied (Experiment 2). This study is the first to demonstrate that the size of the training set affects the acquisition of an abstract identity concept in an MTS task in non-human primates. |
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Springer Berlin / Heidelberg |
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1435-9448 |
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Equine Behaviour @ team @ |
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5274 |
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Author |
Kitchen, D.; Bergman, T.; Cheney, D.; Nicholson, J.; Seyfarth, R. |
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Title |
Comparing responses of four ungulate species to playbacks of baboon alarm calls |
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Journal Article |
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2010 |
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Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume ![sorted by Volume (numeric) field, ascending order (up)](img/sort_asc.gif) |
13 |
Issue |
6 |
Pages |
861-870 |
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Biomedical and Life Sciences |
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A growing body of evidence suggests that a wide range of animals can recognize and respond appropriately to calls produced by other species. Social learning has been implicated as a possible mechanism by which heterospecific call recognition might develop. To examine whether familiarity and/or shared vulnerability with the calling species might influence the ability of sympatric species to distinguish heterospecific alarm calls, we tested whether four ungulate species (impala: Aepyceros melampus; tsessebe: Damaliscus lunatus; zebra: Equus burchelli; wildebeest: Connochaetes taurinus) could distinguish baboon (Papio hamadryas ursinus) alarm calls from other loud baboon calls produced during intra-specific aggressive interactions (‘contest’ calls). Overall, subjects’ responses were stronger following playback of alarm calls than contest calls. Of the species tested, impala showed the strongest responses and the greatest difference in composite response scores, suggesting they were best able to differentiate call types. Compared with the other ungulate species, impala are the most frequent associates of baboons. Moreover, like baboons, they are susceptible to both lion and leopard attacks, whereas leopards rarely take the larger ungulates. Although it seems possible that high rates of association and/or shared vulnerability may influence impala’s greater ability to distinguish among baboon call types, our results point to a stronger influence of familiarity. Ours is the first study to compare such abilities among several community members with variable natural histories, and we discuss future experiments that would more systematically examine development of these skills in young ungulates. |
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Springer Berlin / Heidelberg |
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1435-9448 |
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Equine Behaviour @ team @ |
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5275 |
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Author |
Osthaus, B.; Marlow, D.; Ducat, P. |
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Title |
Minding the gap: spatial perseveration error in dogs |
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Journal Article |
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Year |
2010 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume ![sorted by Volume (numeric) field, ascending order (up)](img/sort_asc.gif) |
13 |
Issue |
6 |
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881-885-885 |
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Biomedical and Life Sciences |
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We investigated a combination of perseveration and detour behaviour in 50 domestic dogs (Canis familiaris). They were required to make a detour through a gap at one end of a straight barrier in order to reach a target. After one, two, three or four repeats, the gap was moved to the opposite end of the barrier, and the detour behaviour of the dogs was recorded. Although the dogs could solve simple detour tasks (80% correct in the first trial), they committed a perseveration error of following the previously learned route despite the clearly visible change in the location of the gap. This ‘misbehaviour’ occurred in 29 of 30 dogs after only two learning trials. They never reached a 100% correct performance level again even after four runs through the second gap location. The results suggest that dogs are reluctant to unlearn acquired spatial motor responses and reinforced navigation, which has important implications for experimental design, everyday dog training and our understanding of their mental capacities. |
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Springer Berlin / Heidelberg |
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1435-9448 |
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Equine Behaviour @ team @ |
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5276 |
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