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Author (down) Whiten, A.; Byrne, R.W. url  doi
openurl 
  Title Tactical deception in primates Type Journal Article
  Year 1988 Publication Behavioral and Brain Sciences Abbreviated Journal Behav. Brain Sci.  
  Volume 11 Issue 02 Pages 233-244  
  Keywords  
  Abstract ABSTRACT Tactical deception occurs when an individual is able to use an “honest” act from his normal repertoire in a different context to mislead familiar individuals. Although primates have a reputation for social skill, most primate groups are so intimate that any deception is likely to be subtle and infrequent. Published records are sparse and often anecdotal. We have solicited new records from many primatologists and searched for repeating patterns. This has revealed several different forms of deceptive tactic, which we classify in terms of the function they perform. For each class, we sketch the features of another individual's state of mind that an individual acting with deceptive intent must be able to represent, thus acting as a “natural psychologist.” Our analysis will sharpen attention to apparent taxonomic differences. Before these findings can be generalized, however, behavioral scientists must agree on some fundamental methodological and theoretical questions in the study of the evolution of social cognition.  
  Address  
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  Publisher Cambridge Journals Online Place of Publication Editor  
  Language Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 1469-1825 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5937  
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Author (down) Topál, J.; Byrne, R.W.; Miklósi, Á.; Csányi, V. doi  openurl
  Title Reproducing human actions and action sequences: “Do as I Do!” in a dog Type Journal Article
  Year 2006 Publication Animal Cognition Abbreviated Journal Anim. Cogn.  
  Volume 9 Issue 4 Pages 355-367  
  Keywords Animals; *Comprehension; Conditioning, Operant; *Discrimination Learning; Dogs/*psychology; Humans; *Imitative Behavior; Male; *Serial Learning  
  Abstract We present evidence that a dog (Philip, a 4-year-old tervueren) was able to use different human actions as samples against which to match his own behaviour. First, Philip was trained to repeat nine human-demonstrated actions on command ('Do it!'). When his performance was markedly over chance in response to demonstration by one person, testing with untrained action sequences and other demonstrators showed some ability to generalise his understanding of copying. In a second study, we presented Philip with a sequence of human actions, again using the 'Do as I do' paradigm. All demonstrated actions had basically the same structure: the owner picked up a bottle from one of six places; transferred it to one of the five other places and then commanded the dog ('Do it!'). We found that Philip duplicated the entire sequence of moving a specific object from one particular place to another more often than expected by chance. Although results point to significant limitations in his imitative abilities, it seems that the dog could have recognized the action sequence, on the basis of observation alone, in terms of the initial state, the means, and the goal. This suggests that dogs might acquire abilities by observation that enhance their success in complex socio-behavioural situations.  
  Address Comparative Ethology Research Group, Hungarian Academy of Sciences, Budapest, Pazmany, P. 1/c H-1117, Hungary. kea@t-online.hu  
  Corporate Author Thesis  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 1435-9448 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:17024511 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2434  
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Author (down) Riley, J.L.; Noble, D.W.A.; Byrne, R.W.; Whiting, M.J. url  doi
openurl 
  Title Does social environment influence learning ability in a family-living lizard? Type Journal Article
  Year 2017 Publication Animal Cognition Abbreviated Journal Anim. Cogn.  
  Volume 20 Issue 3 Pages 449-458  
  Keywords  
  Abstract Early developmental environment can have profound effects on individual physiology, behaviour, and learning. In birds and mammals, social isolation during development is known to negatively affect learning ability; yet in other taxa, like reptiles, the effect of social isolation during development on learning ability is unknown. We investigated how social environment affects learning ability in the family-living tree skink (Egernia striolata). We hypothesized that early social environment shapes cognitive development in skinks and predicted that skinks raised in social isolation would have reduced learning ability compared to skinks raised socially. Offspring were separated at birth into two rearing treatments: (1) raised alone or (2) in a pair. After 1 year, we quantified spatial learning ability of skinks in these rearing treatments (N = 14 solitary, 14 social). We found no effect of rearing treatment on learning ability. The number of skinks to successfully learn the task, the number of trials taken to learn the task, the latency to perform the task, and the number of errors in each trial did not differ between isolated and socially reared skinks. Our results were unexpected, yet the facultative nature of this species' social system may result in a reduced effect of social isolation on behaviour when compared to species with obligate sociality. Overall, our findings do not provide evidence that social environment affects development of spatial learning ability in this family-living lizard.  
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  ISSN 1435-9456 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Riley2017 Serial 6190  
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Author (down) Held, S.; Mendl, M.; Devereux, C.; Byrne, R.W. url  openurl
  Title Studies in Social Cognition: From Primates to Pigs Type Journal Article
  Year 2001 Publication Animal Welfare Abbreviated Journal  
  Volume 10 Issue Pages 209-217  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 3494  
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Author (down) Held, S.; Baumgartner, J.; Kilbride, A.; Byrne, R.W.; Mendl, M. doi  openurl
  Title Foraging behaviour in domestic pigs (Sus scrofa): remembering and prioritizing food sites of different value Type Journal Article
  Year 2005 Publication Animal Cognition Abbreviated Journal Anim. Cogn.  
  Volume 8 Issue 2 Pages 114-121  
  Keywords Animals; *Appetitive Behavior; *Association Learning; Feeding Behavior/*psychology; Female; *Space Perception; Sus scrofa/*psychology  
  Abstract This experiment investigated whether domestic pigs can remember the locations of food sites of different relative value, and how a restricted retrieval choice affects their foraging behaviour. Nine juvenile female pigs were trained to relocate two food sites out of a possible eight in a spatial memory task. The two baited sites contained different amounts of food and an obstacle was added to the smaller amount to increase handling time. On each trial, a pig searched for the two baited sites (search visit). Once it had found and eaten the bait, it returned for a second (relocation) visit, in which the two same sites were baited. Baited sites were changed between trials. All subjects learnt the task. When allowed to retrieve both baits, the subjects showed no preference for retrieving a particular one first (experiment 1). When they were allowed to retrieve only one bait, a significant overall preference for retrieving the larger amount emerged across subjects (experiment 2). To test whether this preference reflected an avoidance of the obstacle with the smaller bait, 15 choice-restricted control trials were conducted. In control trials obstacles were present with both baits. Pigs continued to retrieve the larger bait, indicating they had discriminated between the two food sites on the basis of quantity or profitability and adjusted their behaviour accordingly when the relocation choice was restricted. This suggests for the first time that domestic pigs have the ability to discriminate between food sites of different relative value and to remember their respective locations.  
  Address Department of Clinical Veterinary Science, Centre for Behavioural Biology, University of Bristol, Langford, BS40 5DU, UK. suzanne.held@bris.ac.uk  
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  ISSN 1435-9448 ISBN Medium  
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  Notes PMID:15871038 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2487  
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Author (down) Farmer, K.; Krüger, K.; Byrne, R.W.; Marr, I. pdf  url
doi  openurl
  Title Sensory laterality in affiliative interactions in domestic horses and ponies (Equus caballus) Type Journal Article
  Year 2018 Publication Animal Cognition Abbreviated Journal Anim. Cogn.  
  Volume 21 Issue 5 Pages 631-637  
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  Abstract Many studies have been carried out into both motor and sensory laterality of horses in agonistic and stressful situations. Here we examine sensory laterality in affiliative interactions within four groups of domestic horses and ponies (N = 31), living in stable social groups, housed at a single complex close to Vienna, Austria, and demonstrate for the first time a significant population preference for the left side in affiliative approaches and interactions. No effects were observed for gender, rank, sociability, phenotype, group, or age. Our results suggest that right hemisphere specialization in horses is not limited to the processing of stressful or agonistic situations, but rather appears to be the norm for processing in all social interactions, as has been demonstrated in other species including chicks and a range of vertebrates. In domestic horses, hemispheric specialization for sensory input appears not to be based on a designation of positive versus negative, but more on the perceived need to respond quickly and appropriately in any given situation.  
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  ISSN 1435-9456 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Farmer2018 Serial 6386  
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Author (down) Cochet, H.; Byrne, R.W. url  doi
openurl 
  Title Evolutionary origins of human handedness: evaluating contrasting hypotheses Type Journal Article
  Year 2013 Publication Abbreviated Journal Animal Cognition  
  Volume 16 Issue 4 Pages 531-542  
  Keywords Hand preference; Hemispheric specialization; Communicative gestures; Evolution of language; Nonhuman primates; Human children  
  Abstract Variation in methods and measures, resulting in past dispute over the existence of population handedness in nonhuman great apes, has impeded progress into the origins of human right-handedness and how it relates to the human hallmark of language. Pooling evidence from behavioral studies, neuroimaging and neuroanatomy, we evaluate data on manual and cerebral laterality in humans and other apes engaged in a range of manipulative tasks and in gestural communication. A simplistic human/animal partition is no longer tenable, and we review four (nonexclusive) possible drivers for the origin of population-level right-handedness: skilled manipulative activity, as in tool use; communicative gestures; organizational complexity of action, in particular hierarchical structure; and the role of intentionality in goal-directed action. Fully testing these hypotheses will require developmental and evolutionary evidence as well as modern neuroimaging data.  
  Address  
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  Publisher Springer-Verlag Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1435-9448 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5691  
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Author (down) Byrne, R.W.; Whiten, A.; Henzi, S.P. url  doi
openurl 
  Title Social relationships of mountain baboons: Leadership and affiliation in a non-female-bonded monkey Type Journal Article
  Year 1990 Publication American journal of primatology Abbreviated Journal Am. J. Primatol.  
  Volume 20 Issue 4 Pages 313-329  
  Keywords relationships; one-male groups; female-bonding; spacing; support; Papio ursinus; Papio hamadryas  
  Abstract Abstract 10.1002/ajp.1350200409.abs Instead of close and differentiated relationships among adult females, the accepted norm for savanna baboons, groups of Drakensberg mountain baboons (Papio ursinus) showed strong affiliation of females towards a single male. The same male was usually the decision-making animal in controlling group movements. Lactating or pregnant females focused their grooming on this “leader” male, producing a radially patterned sociogram, as in the desert baboon (P. hamadryas); the leader male supported young animals in the group against aggression and protected them against external threats. Unlike typical savanna baboons, these mountain baboons rarely displayed approach-retreat or triadic interactions, and entirely lacked coalitions among adult females. Both groups studied were reproductively one-male; male-female relationships in one were like those in a unit of a hamadryas male at his peak, while the other group resembled the unit of an old hamadryas male, who still leads the group, with a male follower starting to build up a new unit and already monopolizing mating. In their mountain environment, where the low population density suggests conditions as harsh for baboons as in deserts, adults in these groups kept unusually large distances apart during ranging; kin tended to range apart, and spacing of adults was greatest at the end of the dry, winter season. These facts support the hypothesis that sparse food is responsible for convergence with hamadryas social organization. It is suggested that all baboons, though matrilocal, are better categorized as “cross-sex-bonded” than “female bonded”.  
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  Publisher Wiley Subscription Services, Inc., A Wiley Company Place of Publication Editor  
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  Series Volume Series Issue Edition  
  ISSN 1098-2345 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5309  
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Author (down) Byrne, R.W.; Whiten, A. openurl 
  Title Tactical deception in primates: the 1990 database Type Book Whole
  Year 1990 Publication Primate Reports Abbreviated Journal Primate Rep.  
  Volume 27 Issue Pages 1-101  
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  Publisher German Primate Center Place of Publication Editor  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 6172  
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Author (down) Byrne, R.W.; Corp, N.; Byrne, J.M. doi  openurl
  Title Manual dexterity in the gorilla: bimanual and digit role differentiation in a natural task Type Journal Article
  Year 2001 Publication Animal Cognition Abbreviated Journal Anim. Cogn.  
  Volume 4 Issue 3 Pages 347-361  
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  Abstract The manipulative actions of mountain gorillas Gorilla g. beringei were examined in the context of foraging on hard-to-process plant foods in the field, in particular those used in tackling thistle Carduus nyassanus. A repertoire of 72 functionally distinct manipulative actions was recorded. Many of these actions were used in several variants of grip, finger(s) and movement path, both by different individuals and by the same individual at different times. The repertoire appears somewhat greater than that observed in comparable studies of monkeys, but a far more striking difference is found in the use of differentiated actions in concert. Mountain gorillas routinely and frequently deal with problems that involve: (1) bimanual role differentiation, with the two hands taking different roles but synchronized in time and space, and (2) digit role differentiation, with independent control of parts of the same hand used for separate purposes at the same time. The independent control that allows these abilities, so crucial to human manual constructional ability, is apparently general in African great apes. Role differentiation, between and within the hand, is evidently a primitive characteristic in the human arsenal of skills.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3357  
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