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Author Lacreuse, A.; Martin-Malivel, J.; Lange, H.S.; Herndon, J.G. doi  openurl
  Title Effects of the menstrual cycle on looking preferences for faces in female rhesus monkeys Type Journal Article
  Year 2007 Publication Animal Cognition Abbreviated Journal (up) Anim. Cogn.  
  Volume 10 Issue 2 Pages 105-115  
  Keywords Animals; *Behavior, Animal; Discrimination Learning; Estradiol/blood; *Face; Female; Humans; Macaca mulatta/*physiology; Male; Menstrual Cycle/blood/*physiology; *Pattern Recognition, Visual  
  Abstract Fluctuations of ovarian hormones across the menstrual cycle influence a variety of social and cognitive behaviors in primates. For example, female rhesus monkeys exhibit heightened interest for males and increased agonistic interactions with other females during periods of high estrogen levels. In the present study, we hypothesized that females' preference for males during periods of high estrogen levels is also expressed at the level of face perception. We tested four intact females on two face-tasks involving neutral portraits of male and female rhesus monkeys, chimpanzees and humans. In the visual preference task (VP), monkeys had to touch a button to view a face image. The image remained on the screen as long as the button was touched, and the duration of pressing was taken as an index of the monkey's looking time for the face stimulus. In the Face-Delayed Recognition Span Test (Face-DRST), monkeys were rewarded for touching the new face in an increasing number of serially presented faces. Monkeys were tested 5 days a week across one menstrual cycle. Blood was collected every other day for analysis of estradiol and progesterone. Two of the four females were cycling at the time of testing. We did not find an influence of the cycle on Face-DRST, likely due to a floor effect. In the VP however, the two cycling individuals looked longer at conspecific male faces than female faces during the peri-ovulatory period of the cycle. Such effects were absent for human and chimpanzee faces and for the two noncycling subjects. These data suggest that ovarian hormones may influence females' preferences for specific faces, with heightened preference for male faces during the peri-ovulatory period of the cycle. Heightened interest for stimuli of significant reproductive relevance during periods of high conception risk may help guide social and sexual behavior in the rhesus monkey.  
  Address Department of Psychology, University of Massachusetts-Amherst, Tobin Hall, 135 Hicks Way, Amherst, MA 01003, USA. alacreuse@psych.umass.edu  
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  ISSN 1435-9448 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:16909232 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2452  
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Author Watanabe, S.; Huber, L. doi  openurl
  Title Animal logics: decisions in the absence of human language Type Journal Article
  Year 2006 Publication Animal Cognition Abbreviated Journal (up) Anim. Cogn.  
  Volume 9 Issue 4 Pages 235-245  
  Keywords *Animal Communication; Animals; Behavior, Animal/*physiology; Brain/physiology; Cognition/*physiology; Decision Making/*physiology; Evolution; Humans; *Language; *Logic; Problem Solving/physiology  
  Abstract Without Abstract  
  Address Department of Psychology, Keio University, Mita 2-15-45, Minato-ku, Tokyo 108, Japan. swat@flet.keio.ac.jp  
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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:16909231 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2453  
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Author Hostetter, A.B.; Russell, J.L.; Freeman, H.; Hopkins, W.D. doi  openurl
  Title Now you see me, now you don't: evidence that chimpanzees understand the role of the eyes in attention Type Journal Article
  Year 2007 Publication Animal Cognition Abbreviated Journal (up) Anim. Cogn.  
  Volume 10 Issue 1 Pages 55-62  
  Keywords Animal Husbandry/methods; Animals; *Attention; Awareness; Female; Fixation, Ocular/*physiology; Humans; Male; Pan troglodytes/*psychology; *Social Behavior; *Social Perception  
  Abstract Chimpanzees appear to understand something about the attentional states of others; in the present experiment, we investigated whether they understand that the attentional state of a human is based on eye gaze. In all, 116 adult chimpanzees were offered food by an experimenter who engaged in one of the four experimental manipulations: eyes closed, eyes open, hand over eyes, and hand over mouth. The communicative behavior of the chimpanzees was observed. More visible behaviors were produced when the experimenter's eyes were visible than when the experimenter's eyes were not visible. More vocalizations were produced when the experimenter's eyes were closed than when they were open, but there were no differences in other attention getting behaviors. There was no effect of age or rearing history. The results suggest that chimpanzees use the presence of the eyes as a cue that their visual gestures will be effective.  
  Address Department of Psychology, University of Wisconsin-Madison, 1202 W. Johnson Street, Madison, WI 53706, USA. abhostetter@wisc.edu  
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  Language English Summary Language Original Title  
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  ISSN 1435-9448 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:16847659 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2457  
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Author Alves, C.; Chichery, R.; Boal, J.G.; Dickel, L. doi  openurl
  Title Orientation in the cuttlefish Sepia officinalis: response versus place learning Type Journal Article
  Year 2007 Publication Animal Cognition Abbreviated Journal (up) Anim. Cogn.  
  Volume 10 Issue 1 Pages 29-36  
  Keywords Animals; *Decapodiformes; Exploratory Behavior; *Maze Learning; Memory; *Space Perception  
  Abstract Several studies have demonstrated that mammals, birds and fish use comparable spatial learning strategies. Unfortunately, except in insects, few studies have investigated spatial learning mechanisms in invertebrates. Our study aimed to identify the strategies used by cuttlefish (Sepia officinalis) to solve a spatial task commonly used with vertebrates. A new spatial learning procedure using a T-maze was designed. In this maze, the cuttlefish learned how to enter a dark and sandy compartment. A preliminary test confirmed that individual cuttlefish showed an untrained side-turning preference (preference for turning right or left) in the T-maze. This preference could be reliably detected in a single probe trial. In the following two experiments, each individual was trained to enter the compartment opposite to its side-turning preference. In Experiment 1, distal visual cues were provided around the maze. In Experiment 2, the T-maze was surrounded by curtains and two proximal visual cues were provided above the apparatus. In both experiments, after acquisition, strategies used by cuttlefish to orient in the T-maze were tested by creating a conflict between the formerly rewarded algorithmic behaviour (turn, response learning) and the visual cues identifying the goal (place learning). Most cuttlefish relied on response learning in Experiment 1; the two strategies were used equally often in Experiment 2. In these experiments, the salience of cues provided during the experiment determined whether cuttlefish used response or place learning to solve this spatial task. Our study demonstrates for the first time the presence of multiple spatial strategies in cuttlefish that appear to closely parallel those described in vertebrates.  
  Address Laboratoire de Physiologie du Comportement des Cephalopodes, Universite de Caen, Esplanade de la Paix, 14032, Caen cedex, France  
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  ISSN 1435-9448 ISBN Medium  
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  Notes PMID:16794852 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2461  
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Author Wallace, D.G.; Hamilton, D.A.; Whishaw, I.Q. doi  openurl
  Title Movement characteristics support a role for dead reckoning in organizing exploratory behavior Type Journal Article
  Year 2006 Publication Animal Cognition Abbreviated Journal (up) Anim. Cogn.  
  Volume 9 Issue 3 Pages 219-228  
  Keywords Animals; *Association Learning; *Exploratory Behavior; Female; *Motor Activity; *Orientation; Problem Solving; Rats; Rats, Long-Evans; Space Perception; *Spatial Behavior  
  Abstract Rat exploration is an organized series of trips. Each exploratory trip involves an outward tour from the refuge followed by a return to the refuge. A tour consists of a sequence of progressions with variable direction and speed concatenated by stops, whereas the return consists of a single direct progression. We have argued that processing self-movement information generated on the tour allows a rat to plot the return to the refuge. This claim has been supported by observing consistent differences between tour and return segments independent of ambient cue availability; however, this distinction was based on differences in movement characteristics derived from multiple progressions and stops on the tour and the single progression on the return. The present study examines movement characteristics of the tour and return progressions under novel-dark and light conditions. Three novel characteristics of progressions were identified: (1) linear speeds and path curvature of exploratory trips are negatively correlated, (2) tour progression maximum linear speed and temporal pacing varies as a function of travel distance, and (3) return progression movement characteristics are qualitatively different from tour progressions of comparable length. These observations support a role for dead reckoning in organizing exploratory behavior.  
  Address Psychology Department, Northern Illinois University, DeKalb, IL 60115-2892, USA. dwallace@niu.edu  
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  Notes PMID:16767471 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2463  
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Author Sturz, B.R.; Bodily, K.D.; Katz, J.S. doi  openurl
  Title Evidence against integration of spatial maps in humans Type Journal Article
  Year 2006 Publication Animal Cognition Abbreviated Journal (up) Anim. Cogn.  
  Volume 9 Issue 3 Pages 207-217  
  Keywords Adult; *Association Learning; Computer Graphics; Humans; Male; *Orientation; *Problem Solving; Reference Values; *Space Perception; *Spatial Behavior; User-Computer Interface  
  Abstract A dynamic 3-D virtual environment was constructed for humans as an open-field analogue of Blaisdell and Cook's (2005) pigeon foraging task to determine if humans, like pigeons, were capable of integrating separate spatial maps. Participants used keyboard keys and a mouse to search for a hidden goal in a 4x4 grid of raised cups. During Phase 1 training, a goal was consistently located between two landmarks (Map 1: blue T and red L). During Phase 2 training, a goal was consistently located down and left of a single landmark (Map 2: blue T). Transfer trials were then conducted in which participants were required to make choices in the presence of the red L alone. Cup choices during transfer assessed participants' strategies: association (from Map 1), generalization (from Map 2), or integration (combining Map 1 and 2). During transfer, cup choices increased to a location which suggested an integration strategy and was consistent with results obtained with pigeons. However, additional analyses of the human data suggested participants initially used a generalization strategy followed by a progressive shift in search behavior away from the red L. This shift in search behavior during transfer was responsible for the changes in cup choices across transfer trials and was confirmed by a control condition. These new analyses offer an alternative explanation to the spatial integration account proposed for pigeons.  
  Address Department of Psychology, Auburn University, Auburn, AL 36849, USA. sturzbr@auburn.edu  
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  Notes PMID:16767470 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2464  
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Author Henderson, J.; Hurly, T.A.; Healy, S.D. doi  openurl
  Title Spatial relational learning in rufous hummingbirds (Selasphorus rufus) Type Journal Article
  Year 2006 Publication Animal Cognition Abbreviated Journal (up) Anim. Cogn.  
  Volume 9 Issue 3 Pages 201-205  
  Keywords Animals; *Association Learning; *Birds; *Concept Formation; Flowers; Form Perception; Male; *Orientation; Reward; Size Perception; *Space Perception; Spatial Behavior  
  Abstract There is increasing evidence that animals can learn abstract spatial relationships, and successfully transfer this knowledge to novel situations. In this study, rufous hummingbirds (Selasphorus rufus) were trained to feed from either the lower or the higher of two flowers. When presented with a test pair of flowers, one of which was at a novel height, they chose the flower in the appropriate spatial position rather than the flower at the correct height. This response may also have been influenced by a preference for taller flowers as acquisition of the task during experimental training occurred more readily when the reward flower was the taller of the pair. Thus, it appears that although learning abstract relationships may be a general phenomenon across contexts, and perhaps across species, the ease with which they are learned and the context in which they are subsequently used may not be the same.  
  Address Institute of Evolutionary Biology, University of Edinburgh, Edinburgh, EH9 3JT, UK  
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  Notes PMID:16767469 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2465  
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Author Gajdon, G.K.; Fijn, N.; Huber, L. doi  openurl
  Title Limited spread of innovation in a wild parrot, the kea (Nestor notabilis) Type Journal Article
  Year 2006 Publication Animal Cognition Abbreviated Journal (up) Anim. Cogn.  
  Volume 9 Issue 3 Pages 173-181  
  Keywords Animal Communication; Animals; Diffusion of Innovation; Feeding Behavior; Female; *Imitative Behavior; *Learning; Male; *Motor Skills; *Parrots; *Problem Solving; Sex Factors; Social Dominance; Social Environment; Statistics, Nonparametric  
  Abstract In the local population of kea in Mount Cook Village, New Zealand, some keas open the lids of rubbish bins with their bill to obtain food scraps within. We investigated the extent to which this innovation has spread in the local population, and what factors limit the acquisition of bin opening. Only five males of 36 individually recognised birds were observed to have performed successful bin opening. With one exception there were always other keas present, watching successful bin opening. Seventeen additional individuals were seen to have benefitted from lid opening. Their foraging success was less than that of the bin openers. Social status of bin openers did not differ from scrounging males. Among the individuals that were regularly seen at the site of the bins but were not successful in bin opening, social status and the ratio of feeding directly from open bins correlated with the amount of opening attempts. We conclude that scrounging facilitated certain behavioural aspects of bin opening rather than inhibiting them. The fact that only 9% of opening attempts were successful, and the long period of time required to increase efficiency in lid opening shows that mainly individual experience, and to a lesser extent insight and social learning, play key roles in acquisition of the opening technique. The results indicate that the spread of innovative solutions of challenging mechanical problems in animals may be restricted to only a few individuals.  
  Address Department for Behavior, Neurobiology and Cognition, University of Vienna, 1090, Vienna, Austria. gyula.gajdon@univie.ac.at  
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  Notes PMID:16568276 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2472  
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Author Church, D.L.; Plowright, C.M.S. doi  openurl
  Title Spatial encoding by bumblebees (Bombus impatiens) of a reward within an artificial flower array Type Journal Article
  Year 2006 Publication Animal Cognition Abbreviated Journal (up) Anim. Cogn.  
  Volume 9 Issue 2 Pages 131-140  
  Keywords Animals; Appetitive Behavior/physiology; Association Learning/*physiology; Bees/*physiology; Chi-Square Distribution; *Cues; Female; Memory/physiology; Reward; Space Perception/*physiology; Spatial Behavior/*physiology  
  Abstract We presented bumblebees a spatial memory task similar to that used with other species (e.g., cats, dogs, and pigeons). In some conditions we allowed for presence of scent marks in addition to placing local and global spatial cues in conflict. Bumblebees (Bombus impatiens) were presented an array of artificial flowers within a flight cage, one flower offering reward (S+), while the others were empty (S-). Bees were tested with empty flowers. In Experiment 1, flowers were either moved at the time of testing or not. Bees returned to the flower in the same absolute position of the S+ (the flower-array-independent (FAI) position), even if it was in the wrong position relative to the S- and even when new flower covers prevented the use of possible scent marks. New flower covers (i.e., without possible scent marks) had the effect of lowering the frequency of probing behavior. In Experiment 2, the colony was moved between training and testing. Again, bees chose the flower in the FAI position of the S+, and not the flower that would be chosen using strictly memory for a flight vector. Together, these experiments show that to locate the S+ bees did not rely on scent marks nor the positions of the S-, though the S- were prominent objects close to the goal. Also, bees selected environmental features to remember the position of the S+ instead of relying upon a purely egocentric point of view. Similarities with honeybees and vertebrates are discussed, as well as possible encoding mechanisms.  
  Address Psychology Department, Bag Service #45444, University of New Brunswick, Fredericton, NB, E3B 6E4, Canada. dchurchl@unb.ca  
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  ISSN 1435-9448 ISBN Medium  
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  Notes PMID:16416106 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2474  
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Author Cheng, K.; Wignall, A.E. doi  openurl
  Title Honeybees (Apis mellifera) holding on to memories: response competition causes retroactive interference effects Type Journal Article
  Year 2006 Publication Animal Cognition Abbreviated Journal (up) Anim. Cogn.  
  Volume 9 Issue 2 Pages 141-150  
  Keywords Animals; Bees/*physiology; Choice Behavior/physiology; *Cues; Memory/*physiology; Perceptual Masking/physiology; Space Perception/*physiology; Spatial Behavior/*physiology  
  Abstract Five experiments on honeybees examined how the learning of a second task interferes with what was previously learned. Free flying bees were tested for landmark-based memory in variations on a paradigm of retroactive interference. Bees first learned Task 1, were tested on Task 1 (Test 1), then learned Task 2, and were tested again on Task 1 (Test 2). A 60-min delay (waiting in a box) before Test 2 caused no performance decrements. If the two tasks had conflicting response requirements, (e.g., target right of a green landmark in Task 1 and left of a blue landmark in Task 2), then a strong decrement on Test 2 was found (retroactive interference effect). When response competition was minimised during training or testing, however, the decrement on Test 2 was small or nonexistent. The results implicate response competition as a major contributor to the retroactive interference effect. The honeybee seems to hold on to memories; new memories do not wipe out old ones.  
  Address Centre for the Integrative Study of Animal Behaviour and Department of Psychology, Macquarie University, Sydney, NSW 2109, Australia. ken@galliform.bhs.mq.edu.au  
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  ISSN 1435-9448 ISBN Medium  
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  Notes PMID:16374626 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2477  
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