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Author Hare, B.; Call, J.; Agnetta, B.; Tomasello, M. url  doi
openurl 
  Title Chimpanzees know what conspecifics do and do not see Type Journal Article
  Year 2000 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 59 Issue 4 Pages 771-785  
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  Abstract We report a series of experiments on social problem solving in chimpanzees, Pan troglodytes. In each experiment a subordinate and a dominant individual were put into competition over two pieces of food. In all experiments dominants obtained virtually all of the foods to which they had good visual and physical access. However, subordinates were successful quite often in three situations in which they had better visual access to the food than the dominant, for example, when the food was positioned so that only the subordinate (and not the dominant) could see it. In some cases, the subordinate might have been monitoring the behaviour of the dominant directly and simply avoided the food that the dominant was moving towards (which just happened to be the one it could see). In other cases, however, we ruled out this possibility by giving subordinates a small headstart and forcing them to make their choice (to go to the food that both competitors could see, or the food that only they could see) before the dominant was released into the area. Together with other recent studies, the present investigation suggests that chimpanzees know what conspecifics can and cannot see, and, furthermore, that they use this knowledge to devise effective social-cognitive strategies in naturally occurring food competition situations.  
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  Call Number refbase @ user @ Serial 585  
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Author Byrnl, R.W.; Tomasello, M. url  doi
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  Title Do rats ape? Type Journal Article
  Year 1995 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 50 Issue 5 Pages 1417-1420  
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  Call Number refbase @ user @ Serial 589  
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Author Tomasello, M.; Call, J.; Hare, B. url  openurl
  Title Five primate species follow the visual gaze of conspecifics Type Journal Article
  Year 1998 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 55 Issue 4 Pages 1063-1069  
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  Abstract Individuals from five primate species were tested experimentally for their ability to follow the visual gaze of conspecifics to an outside object. Subjects were from captive social groups of chimpanzees,Pan troglodytes, sooty mangabeys,Cercocebus atys torquatus, rhesus macaques,Macaca mulatta, stumptail macaques,M. arctoides, and pigtail macaques,M. nemestrina. Experimental trials consisted of an experimenter inducing one individual to look at food being displayed, and then observing the reaction of another individual (the subject) that was looking at that individual (not the food). Control trials consisted of an experimenter displaying the food in an identical manner when the subject was alone. Individuals from all species reliably followed the gaze of conspecifics, looking to the food about 80% of the time in experimental trials, compared with about 20% of the time in control trials. Results are discussed in terms of both the proximate mechanisms that might be involved and the adaptive functions that might be served by gaze-following.  
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  Call Number refbase @ user @ Serial 592  
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Author Heyes, C.M. url  doi
openurl 
  Title Imitation and flattery: a reply to Byrne & Tomasello Type Journal Article
  Year 1995 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 50 Issue 5 Pages 1421-1424  
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  Call Number refbase @ user @ Serial 593  
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Author Tomasello, M.; Hare, B.; Fogleman, T. url  openurl
  Title The ontogeny of gaze following in chimpanzees, Pan troglodytes, and rhesus macaques, Macaca mulatta Type Journal Article
  Year 2001 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 61 Issue 2 Pages 335-343  
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  Abstract Primates follow the gaze direction of conspecifics to outside objects. We followed the ontogeny of this social-cognitive skill for two species: rhesus macaques and chimpanzees. In the first two experiments, using both a cross-sectional and a longitudinal design, we exposed individuals of different ages to a human looking in a specified direction. Rhesus infants first began reliably to follow the direction of this gaze at the end of the early infancy period, at about 5.5 months of age. Chimpanzees did not reliably follow human gaze until 3-4 years; this corresponds to the latter part of the late infancy period for this species. In the third experiment we exposed individuals of the same two species to a human repeatedly looking to the same location (with no special object at that location) to see if subjects would learn to ignore the looks. Only adults of the two species diminished their gaze-following behaviour over trials. This suggests that in the period between infancy and adulthood individuals of both species come to integrate their gaze-following skills with their more general social-cognitive knowledge about other animate beings and their behaviour, and so become able to deploy their gaze-following skills in a more flexible manner.  
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  Call Number refbase @ user @ Serial 596  
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Author Sovrano, V.A.; Rainoldi, C.; Bisazza, A.; Vallortigara, G. url  openurl
  Title Roots of brain specializations: preferential left-eye use during mirror-image inspection in six species of teleost fish Type Journal Article
  Year 1999 Publication Behavioural Brain Research Abbreviated Journal Behav. Brain. Res.  
  Volume 106 Issue 1-2 Pages 175-180  
  Keywords Predator fixation; Fish; Left-eye preference  
  Abstract It has recently been reported that predator inspection is more likely to occur when a companion (i.e. the mirror image of the test animal) is visible on the left rather than on the right side of mosquitofish Gambusia holbrooki. This very unexpected outcome could be consistent with the hypothesis of a preferential use of the right eye during sustained fixation of a predator as well as of a preferential use of the left eye during fixation of conspecifics. We measured the time spent in monocular viewing during inspection of their own mirror images in females of six species of fish, belonging to different families--G. holbrooki, Xenotoca eiseni, Phoxinus phoxinus, Pterophyllum scalare, Xenopoecilus sarasinorum, and Trichogaster trichopterus. Results revealed a consistent left-eye preference during sustained fixation in all of the five species. Males of G. holbrooki, which do not normally show any social behaviour, did not exhibit any eye preferences during mirror-image inspection. We found, however, that they could be induced to manifest a left-eye preference, likewise females, if tested soon after capture, when some affiliative tendencies can be observed. These findings add to current evidence in a variety of vertebrate species for preferential involvement of structures located in the right side of the brain in response to the viewing of conspecifics.  
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  Call Number refbase @ user @ Serial 614  
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Author Weeks, J.W.; Crowell-Davis, S.L.; Heusner, G. url  openurl
  Title Preliminary study of the development of the Flehmen response in Equus caballus Type Journal Article
  Year 2002 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 78 Issue 2-4 Pages 329-335  
  Keywords Horse behavior; Flehmen; Foal development  
  Abstract The flehmen response is commonly seen in most ungulates as well as in several other species (e.g. felids). The behavior is most often thought to be part of the sexual behavioral repertoire of males. One reigning hypothesis suggests that this behavior allows the male to determine the estrous state of a female through the chemosensory functions of the vomeronasal organ. However, females and young of both sexes also exhibit this behavior. Horse foals most frequently show the flehmen response during their first month of life with colts showing the behavior more often than fillies. This study tested the flehmen response on male and female foals throughout their pre-pubertal period. Foals were separately presented estrous and non-estrous urine weekly during the first month of life and then monthly until they were approximately 7 months of age. No significant differences were found between male and female foals for the following variables: latency to flehmen, duration of flehmen, frequency of flehmen and sniffs.  
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  Call Number refbase @ user @ Serial 615  
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Author Hall, C. url  doi
openurl 
  Title The impact of visual perception on equine learning Type Journal Article
  Year 2007 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 76 Issue Pages 29-33  
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  Call Number refbase @ user @ Serial 619  
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Author Ninomiya, S. url  doi
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  Title Social leaning and stereotypy in horses Type Journal Article
  Year 2007 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 76 Issue Pages 22-23  
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  Call Number refbase @ user @ Serial 620  
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Author Leblanc, M.-A.; Duncan, P. url  doi
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  Title Can studies of cognitive abilities and of life in the wild really help us to understand equine learning? Type Journal Article
  Year 2007 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 76 Issue Pages 49-52  
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  Notes (up) Approved no  
  Call Number refbase @ user @ Serial 621  
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