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Author  |
Barry, K.L.; Goth, A. |
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Title |
Call recognition in chicks of the Australian brush-turkey (Alectura lathami) |
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Journal Article |
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Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
9 |
Issue |
1 |
Pages |
47-54 |
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Keywords |
*Animal Communication; Animals; Australia; Cues; Galliformes/*physiology; Robotics; *Social Behavior; Species Specificity; Visual Perception |
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Abstract |
Most birds rely on imprinting and experience with conspecifics to learn species-specific recognition cues. Australian brush-turkeys (Alectura lathami) do not imprint and form no bonds with parents. They hatch asynchronously, disperse widely and meet juvenile conspecifics at an unpredictable age. Nevertheless, in captivity, hatchlings respond to other chicks. A recent study, which involved the use of robotic models, found that chicks prefer to approach robots that emit specific visual cues. Here, we evaluated their response to acoustic cues, which usually play an important role in avian social cognition. However, in simultaneous choice tests, neither 2-day-old nor 9-day-old chicks preferred the choice arm with playback of either chick or adult conspecific calls over the arm containing a silent loudspeaker. Chicks of both age classes, however, scanned their surroundings more during chick playback, and the response was thus consistent in younger and older chicks. We also presented the chicks with robotic models, either with or without playback of chick calls. They did not approach the calling robot more than they did the silent robot, indicating that the combination of visual and acoustic cues does not evoke a stronger response. These results will allow further comparison with species that face similar cognitive demands in the wild, such as brood parasites. Such a comparative approach, which is the focus of cognitive ecology, will enable us to further analyse the evolution and adaptive value of species recognition abilities. |
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Department of Biological Sciences, Macquarie University, Sydney, NSW 2109, Australia |
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1435-9448 |
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PMID:16160818 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2484 |
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Author |
Bard, K.A. |
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Title |
Neonatal imitation in chimpanzees (Pan troglodytes) tested with two paradigms |
Type |
Journal Article |
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Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
10 |
Issue |
2 |
Pages |
233-242 |
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Keywords |
Animal Communication; Animals; Animals, Newborn; Imitative Behavior/*physiology; Pan troglodytes/*physiology/*psychology; Problem Solving/physiology |
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Abstract |
Primate species differ in their imitative performance, perhaps reflecting differences in imitative capacity. The developmentally earliest form of imitation in humans, neonatal imitation, occurs in early interactions with social partners, and may be a more accurate index of innate capacity than imitation of actions on objects, which requires more cognitive ability. This study assessed imitative capacity in five neonatal chimpanzees, within a narrow age range (7-15 days of age), by testing responses to facial and vocal actions with two different test paradigms (structured and communicative). Imitation of mouth opening was found in both paradigms. In the communicative paradigm, significant agreement was found between infant actions and demonstrations. Additionally, chimpanzees matched the sequence of three actions of the TC model, but only on the second demonstration. Newborn chimpanzees matched more modeled actions in the communicative test than in the structured paradigm. These performances of chimpanzees, at birth, are in agreement with the literature, supporting a conclusion that imitative capacity is not unique to the human species. Developmental histories must be more fully considered in the cross-species study of imitation, as there is a greater degree of innate imitative capacity than previously known. Socialization practices interact with innate and developing competencies to determine the outcome of imitation tests later in life. |
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Centre for the Study of Emotion, Department of Psychology, University of Portsmouth, King Henry Building, Portsmouth, PO1 2DY, UK. kim.bard@port.ac.uk |
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1435-9448 |
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PMID:17180698 |
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Equine Behaviour @ team @ |
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2427 |
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Author |
Anderson, J.R.; Kuwahata, H.; Fujita, K. |
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Title |
Gaze alternation during “pointing” by squirrel monkeys (Saimiri sciureus)? |
Type |
Journal Article |
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Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
10 |
Issue |
2 |
Pages |
267-271 |
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Keywords |
*Animal Communication; Animals; *Attention; Behavior, Animal/*physiology; *Cues; Female; Humans; *Learning; Male; Saimiri/*physiology |
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Abstract |
Gaze alternation (GA) is considered a hallmark of pointing in human infants, a sign of intentionality underlying the gesture. GA has occasionally been observed in great apes, and reported only anecdotally in a few monkeys. Three squirrel monkeys that had previously learned to reach toward out-of-reach food in the presence of a human partner were videotaped while the latter visually attended to the food, a distractor object, or the ceiling. Frame-by-frame video analysis revealed that, especially when reaching toward the food, the monkeys rapidly and repeatedly switched between looking at the partner's face and the food. This type of GA suggests that the monkeys were communicating with the partner. However, the monkeys' behavior was not influenced by changes in the partner's focus of attention. |
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Department of Psychology, University of Stirling, Stirling, FK9 4LA, Scotland, UK. jra1@stir.ac.uk |
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1435-9448 |
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PMID:17242934 |
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Call Number |
Equine Behaviour @ team @ |
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2424 |
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Author |
Anderson, J.R. |
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Title |
Self-recognition in dolphins: credible cetaceans; compromised criteria, controls, and conclusions |
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Journal Article |
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Year |
1995 |
Publication |
Consciousness and Cognition |
Abbreviated Journal |
Conscious Cogn |
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Volume |
4 |
Issue |
2 |
Pages |
239-243 |
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Keywords |
Animal Communication; Animals; *Awareness; Discrimination Learning; Dolphins/*psychology; Female; Male; Orientation; *Self Concept; Social Behavior; *Television; *Visual Perception |
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Laboratoire de Psychophysiologie, CNRS URA 1295, Universite Louis Pasteur, Strasbourg, France |
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1053-8100 |
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PMID:8521263 |
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Call Number |
Equine Behaviour @ team @ |
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4163 |
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