| Records |
| Author |
Watanabe, N.M.; Stahlman, W.D.; Blaisdell, A.P.; Garlick, D.; Fast, C.D.; Blumstein, D.T. |
| Title |
Quantifying personality in the terrestrial hermit crab: Different measures, different inferences |
Type |
Journal Article |
Year  |
2012 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
91 |
Issue |
2 |
Pages |
133-140 |
| Keywords |
Animal personality; Behavioral syndrome; Hermit crabs |
| Abstract |
There is much interest in studying animal personalities but considerable debate as to how to define and evaluate them. We assessed the utility of one proposed framework while studying personality in terrestrial hermit crabs (Coenobita clypeatus). We recorded the latency of individuals to emerge from their shells over multiple trials in four unique manipulations. We used the specific testing situations within these manipulations to define two temperament categories (shyness-boldness and exploration-avoidance). Our results identified individual behavioral consistency (i.e., personality) across repeated trials of the same situations, within both categories. Additionally, we found correlations between behaviors across contexts (traits) that suggested that the crabs had behavioral syndromes. While we found some correlations between behaviors that are supposed to measure the same temperament trait, these correlations were not inevitable. Furthermore, a principal component analysis (PCA) of our data revealed new relationships between behaviors and provided the foundation for an alternate interpretation: measured behaviors may be situation-specific, and may not reflect general personality traits at all. These results suggest that more attention must be placed on how we infer personalities from standardized methods, and that we must be careful to not force our data to fit our frameworks. |
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0376-6357 |
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Equine Behaviour @ team @ |
Serial |
5620 |
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| Author |
Hanggi, E.B.; Ingersoll, J.F. |
| Title |
Lateral vision in horses: A behavioral investigation |
Type |
Journal Article |
| Year |
2012 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
91 |
Issue |
1 |
Pages |
70-76 |
| Keywords |
Lateral vision; Horse; Equine; Stimulus discrimination; Field of view; Peripheral |
| Abstract |
This study investigated lateral vision in horses (Equus caballus) for the first time from a behavioral point of view. Three horses were tested using a novel experimental design to determine the range of their lateral and caudolateral vision with respect to stimulus detection and discrimination. Real-life stimuli were presented along a curvilinear wall in one of four different positions (A, B, C, D) and one of two height locations (Top, Bottom) on both sides of the horse. To test for stimulus detection, the correct stimulus was paired against a control; for stimulus discrimination, the correct stimulus was paired against another object. To indicate that the correct stimulus was detected or discriminated, the horses pushed one of two paddles. All horses scored significantly above chance on stimulus detection trials regardless of stimulus position or location. They also accurately discriminated between stimuli when objects appeared in positions A, B, and C for the top or bottom locations; however, they failed to discriminate these stimuli at position D. This study supports physiological descriptions of the equine eye and provides new behavioral data showing that horses can detect the appearance of objects within an almost fully encompassing circle and are able to identify objects within most but not all of their panoramic field of view. |
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0376-6357 |
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Equine Behaviour @ team @ |
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5621 |
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| Author |
Galef, B.G. |
| Title |
Imitation and local enhancement: Detrimental effects of consensus definitions on analyses of social learning in animals |
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Journal Article |
| Year |
2013 |
Publication |
Behavioural Processes |
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100 |
Issue |
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Pages |
123-130 |
| Keywords |
Imitation; Local enhancement; Emulation; Copying; Culture; Tradition |
| Abstract |
Development of a widely accepted vocabulary referring to various types of social learning has made important contributions to decades of progress in analyzing the role of socially acquired information in the development of behavioral repertoires. It is argued here that emergence of a consensus vocabulary, while facilitating both communication and research, has also unnecessarily restricted research on social learning. The article has two parts. In the first, I propose that Thorndike, 1898, Thorndike, 1911 definition of imitation as “learning to do an act from seeing it done” has unduly restricted studies of the behavioral processes involved in the propagation of behavior. In part 2, I consider the possibility that success in labeling social learning processes believed to be less cognitively demanding than imitation (e.g. local and stimulus enhancement, social facilitation, etc.) has been mistaken for understanding of those processes, although essentially nothing is known of their stimulus control, development, phylogeny or substrate either behavioral or physiological. |
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0376-6357 |
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Equine Behaviour @ team @ |
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6419 |
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| Author |
Krueger, K.; Flauger, B.; Farmer, K.; Hemelrijk, C. |
| Title |
Movement initiation in groups of feral horses |
Type |
Journal Article |
| Year |
2014 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
103 |
Issue |
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Pages |
91-101 |
| Keywords |
Horse; Equus ferus caballus; Distributed leadership; Herding; Departure; Rank |
| Abstract |
Abstract Herds of ungulates, flocks of birds, swarms of insects and schools of fish move in coordinated groups. Computer models show that only one or very few animals are needed to initiate and direct movement. To investigate initiation mechanisms further, we studied two ways in which movement can be initiated in feral horses: herding, and departure from the group. We examined traits affecting the likelihood of a horse initiating movement i.e. social rank, affiliative relationships, spatial position, and social network. We also investigated whether group members join a movement in dominance rank order. Our results show that whereas herding is exclusive to alpha males, any group member may initiate movement by departure. Social bonds, the number of animals interacted with, and the spatial position were not significantly associated with movement initiation. We did not find movement initiation by departure to be exclusive to any type of individual. Instead we find evidence for a limited form of distributed leadership, with higher ranking animals being followed more often. |
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0376-6357 |
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Equine Behaviour @ team @ |
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5738 |
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Siniscalchi, M.; Padalino, B.; Lusito, R.; Quaranta, A. |
| Title |
Is the left forelimb preference indicative of a stressful situation in horses? |
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Journal Article |
| Year |
2014 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
107 |
Issue |
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Pages |
61-67 |
| Keywords |
Animal welfare; Ethology; Horse; Limb preference; Physiology |
| Abstract |
Abstract Evidence for behavioural and brain lateralisation is now widespread among the animal kingdom; lateralisation of limb use (pawedness) occurs in several mammals including both feral and domestic horses. We investigated limb preferences in 14 Quarter Horse during different motor tasks (walking, stepping on and off a step, truck loading and unloading). Population lateralisation was observed in two tasks: horses preferentially used their left forelimb during truck loading and stepping off a step. The results also revealed that horses showed higher scores for anxious behaviours during truck loading suggesting that the use of the left forelimb in this task may reflect the main role of the right hemisphere in control of behaviour during stressful situation. |
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0376-6357 |
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Equine Behaviour @ team @ |
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6041 |
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| Author |
Griffin, A.S.; Guez, D. |
| Title |
Innovation and problem solving: A review of common mechanisms |
Type |
Journal Article |
| Year |
2014 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
109 |
Issue |
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Pages |
121-134 |
| Keywords |
Behavioural flexibility; Cognition; Innovation; Problem solving |
| Abstract |
Behavioural innovations have become central to our thinking about how animals adjust to changing environments. It is now well established that animals vary in their ability to innovate, but understanding why remains a challenge. This is because innovations are rare, so studying innovation requires alternative experimental assays that create opportunities for animals to express their ability to invent new behaviours, or use pre-existing ones in new contexts. Problem solving of extractive foraging tasks has been put forward as a suitable experimental assay. We review the rapidly expanding literature on problem solving of extractive foraging tasks in order to better understand to what extent the processes underpinning problem solving, and the factors influencing problem solving, are in line with those predicted, and found, to underpin and influence innovation in the wild. Our aim is to determine whether problem solving can be used as an experimental proxy of innovation. We find that in most respects, problem solving is determined by the same underpinning mechanisms, and is influenced by the same factors, as those predicted to underpin, and to influence, innovation. We conclude that problem solving is a valid experimental assay for studying innovation, propose a conceptual model of problem solving in which motor diversity plays a more central role than has been considered to date, and provide recommendations for future research using problem solving to investigate innovation. This article is part of a Special Issue entitled: Cognition in the wild. |
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0376-6357 |
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Equine Behaviour @ team @ |
Serial |
6556 |
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Krueger, K.; Schneider, G.; Flauger, B.; Heinze, J. |
| Title |
Context-dependent third-party intervention in agonistic encounters of male Przewalski horses |
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Journal Article |
| Year |
2015 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
121 |
Issue |
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Pages |
54-62 |
| Keywords |
Equus ferus przewalskii; Group conflict; Rank orders; Social bonds; Social control; Third-party intervention |
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Abstract One mechanism to resolve conflict among group members is third party intervention, for which several functions, such as kin protection, alliance formation, and the promotion of group cohesion have been proposed. Still, empirical research on the function of intervention behaviour is rare. We studied 40 cases of intervention behaviour in a field study on 13 semi-wild bachelor horses (Equus ferus przewalskii) in (a) standard social situations, and (b) when new horses joined the group (i.e. introductions). Only interventions in agonistic encounters were analysed. Eight of 13 animals directed intervention behaviour toward threatening animal in agonistic encounters of group members. One stallion was particularly active. The stallions did not intervene to support former group mates or kin and interventions were not reciprocated. In introduction situations and in standard social situations, the interveners supported animals which were lower in rank, but targeted, threatening animals of comparable social rank. After introductions, stallions received more affiliative behaviour from animals they supported and thus appeared to intervene for alliance formation. In standard social situations, interveners did not receive more affiliative behaviour from animals they supported and may primarily have intervened to promote group cohesion and to reduce social disruption within the group. |
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0376-6357 |
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Equine Behaviour @ team @ |
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5925 |
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| Author |
Brubaker, L.; Udell, M.A.R. |
| Title |
Cognition and learning in horses (Equus caballus): What we know and why we should ask more |
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Journal Article |
| Year |
2016 |
Publication |
Behavioural Processes |
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| Volume |
126 |
Issue |
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121-131 |
| Keywords |
Horse behaviour; Horse welfare; Learning; Social cognition |
| Abstract |
Abstract Horses (Equus caballus) have a rich history in their relationship with humans. Across different cultures and eras they have been utilized for work, show, cultural rituals, consumption, therapy, and companionship and continue to serve in many of these roles today. As one of the most commonly trained domestic animals, understanding how horses learn and how their relationship with humans and other horses impacts their ability to learn has implications for horse welfare, training, husbandry and management. Given that unlike dogs and cats, domesticated horses have evolved from prey animals, the horse-human relationship poses interesting and unique scientific questions of theoretical value. There is still much to be learned about the cognition and behaviour of horses from a scientific perspective. This review explores current research within three related areas of horse cognition: human-horse interactions, social learning and independent learning in horses. Research on these topics is summarized and suggestions for future research are provided. |
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Equine Behaviour @ team @ |
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6021 |
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Rochais, C.; Henry, S.; Fureix, C.; Hausberger, M. |
| Title |
Investigating attentional processes in depressive-like domestic horses (Equus caballus) |
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Journal Article |
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2016 |
Publication |
Behavioural Processes |
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124 |
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93-96 |
| Keywords |
Horses; Attention; Cognition; Welfare; Depression |
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Abstract Some captive/domestic animals respond to confinement by becoming inactive and unresponsive to external stimuli. Human inactivity is one of the behavioural markers of clinical depression, a mental disorder diagnosed by the co-occurrence of symptoms including deficit in selective attention. Some riding horses display ‘withdrawn’ states of inactivity and low responsiveness to stimuli that resemble the reduced engagement with their environment of some depressed patients. We hypothesized that ‘withdrawn’ horses experience a depressive-like state and evaluated their level of attention by confronting them with auditory stimuli. Five novel auditory stimuli were broadcasted to 27 horses, including 12 ‘withdrawn’ horses, for 5 days. The horses’ reactions and durations of attention were recorded. Non-withdrawn horses reacted more and their attention lasted longer than that of withdrawn horses on the first day, but their durations of attention decreased over days, but those of withdrawn horses remained stable. These results suggest that the withdrawn horses’ selective attention is altered, adding to already evidenced common features between this horses’ state and human depression. |
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0376-6357 |
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Equine Behaviour @ team @ |
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6023 |
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Briard, L.; Deneubourg, J.-L.; Petit, O. |
| Title |
How stallions influence the dynamic of collective movements in two groups of domestic horses, from departure to arrival |
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Journal Article |
| Year |
2017 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
142 |
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56-63 |
| Keywords |
consensus; herding; polygyny; personal leadership; shared decision |
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Abstract The role of leader in polygynous species has been solely attributed to the male for some time, but recent studies shown decision making to be distributed within the group. However, the specific reproductive strategy and behavioural repertoire of males in polygynous species such as horses may mean that these individuals still have the potential to play a specific role during decision-making. To investigate this subject, we thoroughly studied the behaviour of two domestic stallions during collective movements of their group. We found that they initiated rarely and sometimes failed to recruit the entire group. When departing as followers, they did not accelerate the joining process. Both stallions preferentially occupied the rear position and exhibited numerous monitoring behaviours. Herding behaviours were performed by only one stallion and mostly occurred outside movement context. Finally, we removed this herding stallion from its group to evaluate how the group dynamic changed. As a result, half of the collective movements were five times slower and mares were more dispersed in comparison when the stallion was in the group. Overall, our results suggest that, the two stallions maintained their role of group monitors from departure to arrival. Their influence on the movement dynamic was indirect and did not play a specific role in the process of decision making. |
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0376-6357 |
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Equine Behaviour @ team @ |
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6151 |
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