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| Author |
Amant, R. St.; Horton, T.E. |
| Title |
Revisiting the definition of animal tool use |
Type |
Journal Article |
| Year |
2008 |
Publication |
Animal Behaviour |
Abbreviated Journal |
Anim. Behav. |
| Volume |
75 |
Issue |
4 |
Pages |
1199-1208 |
| Keywords |
cognition; tool use |
| Abstract |
Benjamin Beck's definition of tool use has served the field of animal cognition well for over 25 years (Beck 1980, Animal Tool Behavior: the Use and Manufacture of Tools, New York, Garland STPM). This article proposes a new, more explanatory definition that accounts for tool use in terms of two complementary subcategories of behaviours: behaviours aimed at altering a target object by mechanical means and behaviours that mediate the flow of information between the tool user and the environment or other organisms in the environment. The conceptual foundation and implications of the new definition are contrasted with those of existing definitions, particularly Beck's. The new definition is informally evaluated with respect to a set of scenarios that highlights differences from Beck's definition as well as those of others in the literature. |
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0003-3472 |
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Equine Behaviour @ team @ |
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5861 |
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| Author |
Yorke, J.; Adams, C.; Coady, N. |
| Title |
Therapeutic Value of Equine-Human Bonding in Recovery from Trauma |
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Journal Article |
| Year |
2008 |
Publication |
Anthrozoös |
Abbreviated Journal |
Anthrozoös |
| Volume |
21 |
Issue |
1 |
Pages |
17-30 |
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ABSTRACTAlthough most human-animal bond research has focused on relationships between humans and pets, animals have been used for therapeutic purposes in a variety of settings. Therapeutic riding programs have demonstrated a positive impact on quality of life for people with disabilities. Equine-facilitated psychotherapy is a promising approach to address self-esteem, depression, and other emotional or psychological problems. Restoration of the trauma victim's capacity for recovery hinges on provision of safety and development of trust, self-esteem, and self-efficacy. Thus, recovery from trauma represents an ideal context for exploring the therapeutic impact of equine?human relationships. The six participants in this study recognized that their pre-existing relationships with horses were therapeutic during recovering from trauma, defined as sufficient to have caused significant change in the participant's life. Semi-structured interviews and video-tapes of horse?rider interaction were used to describe the nature of the equine?human bond and its contribution to recovery from trauma. The equine?human bonds described by participants have parallels both with important elements of therapeutic alliances between professionals and clients and with the positive impact of relationship factors on client outcome. |
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Routledge |
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0892-7936 |
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doi: 10.2752/089279308X274038 |
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no |
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Equine Behaviour @ team @ |
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6033 |
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Boogert, N.J.; Reader, S.M.; Hoppitt, W.; Laland, K.N. |
| Title |
The origin and spread of innovations in starlings |
Type |
Journal Article |
| Year |
2008 |
Publication |
Animal Behaviour |
Abbreviated Journal |
Anim. Behav. |
| Volume |
75 |
Issue |
4 |
Pages |
1509-1518 |
| Keywords |
diffusion dynamics; dominance; foraging; group; innovation; neophobia; social learning; social network; starling; Sturnus vulgaris |
| Abstract |
There are numerous reports of novel learned behaviour patterns in animal populations, yet the factors influencing the invention and spread of these innovations remain poorly understood. Here we investigated to what extent the pattern of spread of innovations in captive groups of starlings, Sturnus vulgaris, could be predicted by knowledge of individual and social group variables, including association patterns, social rank orders, measures of neophobia and asocial learning performance. We presented small groups of starlings with a series of novel extractive foraging tasks and recorded the latency for each bird to contact and solve each task, as well as the orders of contacting and solving. We then explored which variables best predicted the observed diffusion patterns. Object neophobia and social rank measures characterized who was the first of the group to contact the novel foraging tasks, and the subsequent spread of contacting tasks was associated with latency to feed in a novel environment. Asocial learning performance, measured in isolation, predicted who was the first solver of the novel foraging tasks in each group. Association patterns did not predict the spread of solving. Contact latency and solving duration were negatively correlated, consistent with social learning underlying the spread of solving. Our findings indicate that we can improve our understanding of the diffusion dynamics of innovations in animal groups by investigating group-dependent and individual variables in combination. We introduce novel methods for exploring predictors of the origin and spread of behavioural innovations that could be widely applied. |
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0003-3472 |
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Equine Behaviour @ team @ |
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6036 |
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| Author |
Brooks, C.J.; Harris, S. |
| Title |
Directed movement and orientation across a large natural landscape by zebras, Equus burchelli antiquorum |
Type |
Journal Article |
| Year |
2008 |
Publication |
Animal Behaviour |
Abbreviated Journal |
Anim. Behav. |
| Volume |
76 |
Issue |
2 |
Pages |
277-285 |
| Keywords |
correlated random walk; directed movement; Equus burchelli antiquorum; Gps; movement path; orientation; spatial memory; spatial scale; zebra |
| Abstract |
We investigated how plains zebras moved across a large natural landscape by analysing the movement paths of nine zebra mares foraging out from spatially confined waterholes during the dry season in the Makgadikgadi Pans National Park, Botswana. Since it was essential to investigate directed movement over a range of spatial scales to determine the correct movement behaviour and strategy, we used Nams's scaling test for oriented movement. Zebras followed directed movement paths in the lower to medium spatial scales (10 m–3.7 km) and above their visual, and possibly olfactory, range. The spatial scale of directed movement suggests that zebras had a well-defined spatial awareness and cognitive ability. Seven zebras used directed movement paths, but the remaining two followed paths not significantly different to a correlated random walk (CRW). At large spatial scales (>3 km) no distinct movement pattern could be identified and paths could not be distinguished from a CRW. Foraging strategy affected the extent of directed movement: zebras with a confined dispersion of grazing patches around the central place directed their movements over a longer distance. Zebras may extend the distance at which they can direct their movement after improving their knowledge of the local environment. |
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0003-3472 |
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Equine Behaviour @ team @ |
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6148 |
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Webster, M.M.; Laland, K.N. |
| Title |
Social learning strategies and predation risk: minnows copy only when using private information would be costly |
Type |
Journal Article |
| Year |
2008 |
Publication |
Proc Biol Sci |
Abbreviated Journal |
Proc. R. Soc. Lond. B |
| Volume |
275 |
Issue |
1653 |
Pages |
2869-2876 |
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Animals can acquire information from the environment privately, by sampling it directly, or socially, through learning from others. Generally, private information is more accurate, but expensive to acquire, while social information is cheaper but less reliable. Accordingly, the 'costly information hypothesis' predicts that individuals will use private information when the costs associated with doing so are low, but that they should increasingly use social information as the costs of using private information rise. While consistent with considerable data, this theory has yet to be directly tested in a satisfactory manner. We tested this hypothesis by giving minnows (Phoxinus phoxinus) a choice between socially demonstrated and non-demonstrated prey patches under conditions of low, indirect and high simulated predation risk. Subjects had no experience (experiment 1) or prior private information that conflicted with the social information provided by the demonstrators (experiment 2). In both experiments, subjects spent more time in the demonstrated patch than in the non-demonstrated patch, and in experiment 1 made fewer switches between patches, when risk was high compared with when it was low. These findings are consistent with the predictions of the costly information hypothesis, and imply that minnows adopt a 'copy-when-asocial-learning-is-costly' learning strategy. |
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Equine Behaviour @ team @ |
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6196 |
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Hoppitt, W.; Laland, K.N. |
| Title |
Social processes influencing learning in animals: a review of the evidence |
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Journal Article |
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2008 |
Publication |
Adv Study Behav |
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38 |
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105-165 |
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Equine Behaviour @ team @ Hoppitt2008 |
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6260 |
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Langbein, J.; Siebert, K.; Nuernberg, G. |
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Concurrent recall of serially learned visual discrimination problems in dwarf goats (Capra hircus) |
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Journal Article |
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2008 |
Publication |
Behav Proc |
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79 |
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Equine Behaviour @ team @ Langbein2008 |
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6363 |
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Krösbacher, A. E. |
| Title |
Das Arabische Vollblut: Eine kontrovers diskutierte Rasse: Was steckt wirklich hinter der Zucht dieser edlen Pferde? |
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2008 |
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Bachelor's thesis |
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University for Veterinarian Medicine Vienna |
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Vienna |
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no |
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Equine Behaviour @ team @ |
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6544 |
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Visser, E.K.; Ellis, A.D.; Van Reenen, C.G. |
| Title |
The effect of two different housing conditions on the welfare of young horses stabled for the first time |
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Journal Article |
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2008 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
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114 |
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3 |
Pages |
521-533 |
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Horse; Welfare; Stabling; Housing; HPA axis; Novel Object test |
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The effect of stabling for the first time on the behaviour and welfare of young and naïve horses has not yet been studied in detail. In this study we examined the effect of two typical housing systems on their subsequent behavioural and physiological responses upon first time stabling. Thirty-six 2-year-old Dutch warmbloods, 18 geldings and 18 mares were included in the study. Half of the horses were stabled in individual stables (10.5m2) and the other half in pair housing (48m2 for two horses). The study lasted 12 weeks. At the end of the study the physiological and temperamental responses of the horses on the different treatments was tested using a CRF challenge test (to test the HPA-axis function) and a Novel Object test (to test temperamental differences) respectively. Especially in the first week after stabling pair housed horses spent more time eating whereas individually housed horses spent more time either standing vigilant or sleeping. Stress-related behaviours like neighing, pawing, nibbling and snorting were all displayed significantly more frequently in the individually housed horses (P<0.01). At the end of the study 67% of the individually housed horses was seen performing one or more stereotypies (P<0.01). The cortisol response and ACTH response on the CRF challenge test were lower for horses in the individually housed boxes. It is suggested that this depression in socially isolated animals is caused by a desensitisation of the HPA axis in response to stress-induced elevations in ACTH and cortisol. In general there was no effect of the treatment on the reactivity of the horses during the Novel Object test. However, there were significant relations between the responses of horses in the Novel Object test and in the stable environment. It is concluded that sudden isolated stabling is stressful to young and naïve horses, resulting in a high prevalence of stereotypies and abnormal behaviours. This study also provided some support for the notion that social stress in horses may be associated with a blunted adrenocortical response to CRF challenge. The finding that responses of horses to a behavioural test are correlated with home environment behaviours suggests that individual horses exhibit consistent behavioural traits across different contexts, and opens the possibility of using behavioural tests in horses to predict more general underlying behavioural characteristics. |
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0168-1591 |
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Equine Behaviour @ team @ |
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6630 |
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Dwan, K.; Altman, D.G.; Arnaiz, J.A.; Bloom, J.; Chan, A.-W.; Cronin, E.; Decullier, E.; Easterbrook, P.J.; Von Elm, E.; Gamble, C.; Ghersi, D.; Ioannidis, J.P.A.; Simes, J.; Williamson, P.R. |
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Systematic Review of the Empirical Evidence of Study Publication Bias and Outcome Reporting Bias |
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Journal Article |
| Year |
2008 |
Publication |
Plos One |
Abbreviated Journal |
Plos One |
| Volume |
3 |
Issue |
8 |
Pages |
e3081 |
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Background The increased use of meta-analysis in systematic reviews of healthcare interventions has highlighted several types of bias that can arise during the completion of a randomised controlled trial. Study publication bias has been recognised as a potential threat to the validity of meta-analysis and can make the readily available evidence unreliable for decision making. Until recently, outcome reporting bias has received less attention. Methodology/Principal Findings We review and summarise the evidence from a series of cohort studies that have assessed study publication bias and outcome reporting bias in randomised controlled trials. Sixteen studies were eligible of which only two followed the cohort all the way through from protocol approval to information regarding publication of outcomes. Eleven of the studies investigated study publication bias and five investigated outcome reporting bias. Three studies have found that statistically significant outcomes had a higher odds of being fully reported compared to non-significant outcomes (range of odds ratios: 2.2 to 4.7). In comparing trial publications to protocols, we found that 40-62% of studies had at least one primary outcome that was changed, introduced, or omitted. We decided not to undertake meta-analysis due to the differences between studies. Conclusions Recent work provides direct empirical evidence for the existence of study publication bias and outcome reporting bias. There is strong evidence of an association between significant results and publication; studies that report positive or significant results are more likely to be published and outcomes that are statistically significant have higher odds of being fully reported. Publications have been found to be inconsistent with their protocols. Researchers need to be aware of the problems of both types of bias and efforts should be concentrated on improving the reporting of trials. |
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Public Library of Science |
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Equine Behaviour @ team @ |
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6644 |
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