| Records |
| Author |
Assersohn, C.; Whiten, A.; Kiwede, Z.T.; Tinka, J.; Karamagi, J. |
| Title |
Use of leaves to inspect ectoparasites in wild chimpanzees: a third cultural variant? |
Type |
Journal Article |
| Year |
2004 |
Publication |
Primates |
Abbreviated Journal |
Primates |
| Volume |
45 |
Issue |
4 |
Pages |
255-258 |
| Keywords |
Animals; Animals, Wild/physiology; Ape Diseases/*parasitology; Behavior, Animal/*physiology; Ectoparasitic Infestations/parasitology/*veterinary; Female; Grooming/*physiology; Male; Pan troglodytes/*physiology; *Plant Leaves; Protozoa/*isolation & purification; Uganda |
| Abstract |
We report 26 cases of using leaves as tools with which wild chimpanzees (Pan troglodytes schweinfurthii) in the Sonso community, Budongo Forest, Uganda, appeared to inspect objects removed during grooming. Careful removal of potential ectoparasites and delicate lip or manual placement on leaves followed by intense visual examination characterised this behaviour. It appears to be done to judge whether either ingestion or discarding is most appropriate, the former occurring in most cases. This behaviour may represent a third variant of ectoparasite handling, different from those described at Tai and Gombe, yet sharing features with the latter. These two East African techniques may thus have evolved from leaf grooming. |
| Address |
Scottish Primate Research Group, School of Psychology, University of St Andrews, St Andrews, KY16 9JU, Fife, UK |
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English |
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| ISSN |
0032-8332 |
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| Notes |
PMID:15179558 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
733 |
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| Author |
Whiten, A.; McGrew, W.C. |
| Title |
Is this the first portrayal of tool use by a chimp? |
Type |
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| Year |
2001 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
409 |
Issue |
6816 |
Pages |
12 |
| Keywords |
Animals; *Behavior, Animal; Pan troglodytes/*physiology; Philately |
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English |
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| ISSN |
0028-0836 |
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| Notes |
PMID:11343083 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
739 |
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| Author |
Whiten, A.; Boesch, C. |
| Title |
The cultures of chimpanzees |
Type |
Journal Article |
| Year |
2001 |
Publication |
Scientific American |
Abbreviated Journal |
Sci Am |
| Volume |
284 |
Issue |
1 |
Pages |
60-67 |
| Keywords |
Animals; *Behavior, Animal; Culture; Feeding Behavior; Grooming; Hominidae; Humans; Pan troglodytes/*physiology |
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| Address |
University of St. Andrews |
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English |
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| ISSN |
0036-8733 |
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| Notes |
PMID:11132425 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
740 |
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| Author |
Whiten, A.; Goodall, J.; McGrew, W.C.; Nishida, T.; Reynolds, V.; Sugiyama, Y.; Tutin, C.E.; Wrangham, R.W.; Boesch, C. |
| Title |
Cultures in chimpanzees |
Type |
Journal Article |
| Year |
1999 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
399 |
Issue |
6737 |
Pages |
682-685 |
| Keywords |
Animals; *Behavior, Animal; Cognition; *Culture; Humans; Pan troglodytes/*physiology; Species Specificity |
| Abstract |
As an increasing number of field studies of chimpanzees (Pan troglodytes) have achieved long-term status across Africa, differences in the behavioural repertoires described have become apparent that suggest there is significant cultural variation. Here we present a systematic synthesis of this information from the seven most long-term studies, which together have accumulated 151 years of chimpanzee observation. This comprehensive analysis reveals patterns of variation that are far more extensive than have previously been documented for any animal species except humans. We find that 39 different behaviour patterns, including tool usage, grooming and courtship behaviours, are customary or habitual in some communities but are absent in others where ecological explanations have been discounted. Among mammalian and avian species, cultural variation has previously been identified only for single behaviour patterns, such as the local dialects of song-birds. The extensive, multiple variations now documented for chimpanzees are thus without parallel. Moreover, the combined repertoire of these behaviour patterns in each chimpanzee community is itself highly distinctive, a phenomenon characteristic of human cultures but previously unrecognised in non-human species. |
| Address |
Scottish Primate Research Group, School of Psychology, University of St Andrews, UK |
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English |
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| ISSN |
0028-0836 |
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Conference |
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| Notes |
PMID:10385119 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
742 |
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| Author |
Whiten, A. |
| Title |
Imitation of the sequential structure of actions by chimpanzees (Pan troglodytes) |
Type |
Journal Article |
| Year |
1998 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
| Volume |
112 |
Issue |
3 |
Pages |
270-281 |
| Keywords |
Animals; Appetitive Behavior/physiology; *Ceremonial Behavior; Exploratory Behavior/physiology; Female; Fruit; Imitative Behavior/*physiology; Learning/*physiology; Male; Pan troglodytes/*psychology; Practice (Psychology); Problem Solving/*physiology |
| Abstract |
Imitation was studied experimentally by allowing chimpanzees (Pan troglodytes) to observe alternative patterns of actions for opening a specially designed “artificial fruit.” Like problematic foods primates deal with naturally, with the test fruit several defenses had to be removed to gain access to an edible core, but the sequential order and method of defense removal could be systematically varied. Each subject repeatedly observed 1 of 2 alternative techniques for removing each defense and 1 of 2 alternative sequential patterns of defense removal. Imitation of sequential organization emerged after repeated cycles of demonstration and attempts at opening the fruit. Imitation in chimpanzees may thus have some power to produce cultural convergence, counter to the supposition that individual learning processes corrupt copied actions. Imitation of sequential organization was accompanied by imitation of some aspects of the techniques that made up the sequence. |
| Address |
Scottish Primate Research Group, School of Psychology, University of St. Andrews, Fife, Scotland. a.whiten@st-andrews.ac.uk |
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English |
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Edition |
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| ISSN |
0735-7036 |
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| Notes |
PMID:9770315 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
743 |
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| Author |
Kawamura, S. |
| Title |
Aggression as studied in troops of Japanese monkeys |
Type |
Journal Article |
| Year |
1967 |
Publication |
UCLA Forum in Medical Sciences |
Abbreviated Journal |
UCLA Forum Med Sci |
| Volume |
7 |
Issue |
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Pages |
195-223 |
| Keywords |
*Aggression; Animals; Behavior, Animal; Defense Mechanisms; Female; *Haplorhini; Homosexuality; Humans; Japan; Leadership; Male; Play and Playthings; Sexual Behavior, Animal; Social Behavior; Socialization |
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| ISSN |
0082-7134 |
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| Notes |
PMID:4972333 |
Approved |
no |
| Call Number |
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Serial |
2056 |
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| Author |
Dunbar, R.I.M.; McAdam, M.R.; O'connell, S. |
| Title |
Mental rehearsal in great apes (Pan troglodytes and Pongo pygmaeus) and children |
Type |
Journal Article |
| Year |
2005 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
69 |
Issue |
3 |
Pages |
323-330 |
| Keywords |
Algorithms; Animals; Child; Child, Preschool; Food; Frontal Lobe/anatomy & histology/physiology; Humans; *Imagination; Pan troglodytes; Pongo pygmaeus; Problem Solving/*physiology; Psychomotor Performance/physiology; Reward |
| Abstract |
The ability to rehearse possible future courses of action in the mind is an important feature of advanced social cognition in humans, and the “social brain” hypothesis implies that it might also be a feature of primate social cognition. We tested two chimpanzees, six orangutans and 63 children aged 3-7 years on a set of four puzzle boxes, half of which were presented with an opportunity to observe the box before being allowed to open it (“prior view”), the others being given without an opportunity to examine the boxes before handling them (“no prior view”). When learning effects are partialled out, puzzle boxes in the “prior view” condition were opened significantly faster than boxes given in the “no prior view” condition by the children, but not by either of the great apes. The three species differ significantly in the speed with which they opened boxes in the “no prior view” condition. The three species' performance on this task was a function of relative frontal lobe volume, suggesting that it may be possible to identify quantitative neuropsychological differences between species. |
| Address |
Evolutionary Psychology Research Group, School of Biological Sciences, University of Liverpool, Biosciences Building, Crown Street, Liverpool L69 7ZB, UK. rimd@liv.ac.uk |
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English |
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| ISSN |
0376-6357 |
ISBN |
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| Notes |
PMID:15896530 |
Approved |
no |
| Call Number |
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Serial |
2097 |
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| Author |
Bard, K.A. |
| Title |
Neonatal imitation in chimpanzees (Pan troglodytes) tested with two paradigms |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
10 |
Issue |
2 |
Pages |
233-242 |
| Keywords |
Animal Communication; Animals; Animals, Newborn; Imitative Behavior/*physiology; Pan troglodytes/*physiology/*psychology; Problem Solving/physiology |
| 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. |
| Address |
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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English |
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| ISSN |
1435-9448 |
ISBN |
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| Notes |
PMID:17180698 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2427 |
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| Author |
Tanaka, M. |
| Title |
Recognition of pictorial representations by chimpanzees (Pan troglodytes) |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
10 |
Issue |
2 |
Pages |
169-179 |
| Keywords |
Animals; Discrimination Learning; Female; Male; Pan troglodytes/*physiology; *Pattern Recognition, Visual; Photography |
| Abstract |
In this study, I investigated chimpanzees' ability to recognize pictorial representations. Four adults and three juvenile chimpanzees were trained to choose images of photographs of flowers among 12 items belonging to four categories on a touch-sensitive monitor. As a generalization test, the following five types of images were presented: (1) novel photographs, (2) colored sketches (more realistic), (3) a colored clip art (cartoon-like images), (4) black-and-white line drawings, and (5) Kanji characters (as the control images). One adult and all three juvenile chimpanzees were able to choose any style of the nonphotographic images of flowers significantly above the chance level, whereas none could choose the correct Kanji characters corresponding to a flower significantly above the chance level. The other three adult chimpanzees' performance level did not exceed the chance level in terms of choosing nonphotographic images although they showed good transfer skills to novel photographs. The results revealed that not all chimpanzees could recognize pictures used by humans without training. The results also suggest “critical period” in acquisition of skill in recognizing pictures in chimpanzees. Only one adult chimpanzee, who had acquired skill in recognizing visual symbols, also recognized pictures aside from the juvenile chimpanzees. Her learning history might have aided her in acquiring this skill. The results of this study suggest a relationship between pictorial competence and symbolic one. |
| Address |
Department of Brain and Behavioral Sciences, Primate Research Institute, Kyoto University, 41-2 Kanrin, Inuyama, Aichi, 484-8506, Japan. mtanaka@pri.kyoto-u.ac.jp |
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English |
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Abbreviated Series Title |
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| ISSN |
1435-9448 |
ISBN |
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Conference |
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| Notes |
PMID:17171361 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2428 |
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| Author |
Hayashi, M. |
| Title |
Stacking of blocks by chimpanzees: developmental processes and physical understanding |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
10 |
Issue |
2 |
Pages |
89-103 |
| Keywords |
Animals; Cognition/*physiology; Female; Male; Motor Skills/*physiology; Pan troglodytes/*physiology/*psychology |
| Abstract |
The stacking-block task has been used to assess cognitive development in both humans and chimpanzees. The present study reports three aspects of stacking behavior in chimpanzees: spontaneous development, acquisition process following training, and physical understanding assessed through a cylindrical-block task. Over 3 years of longitudinal observation of block manipulation, one of three infant chimpanzees spontaneously started to stack up cubic blocks at the age of 2 years and 7 months. The other two infants began stacking up blocks at 3 years and 1 month, although only after the introduction of training by a human tester who rewarded stacking behavior. Cylindrical blocks were then introduced to assess physical understanding in object-object combinations in three infant (aged 3-4) and three adult chimpanzees. The flat surfaces of cylinders are suitable for stacking, while the rounded surface is not. Block manipulation was described using sequential codes and analyzed focusing on failure, cause, and solution in the task. Three of the six subjects (one infant and two adults) stacked up cylindrical blocks efficiently: frequently changing the cylinders' orientation without contacting the round side to other blocks. Rich experience in stacking cubes may facilitate subjects' stacking of novel, cylindrical shapes from the beginning. The other three subjects were less efficient in stacking cylinders and used variable strategies to achieve the goal. Nevertheless, they began to learn the effective way of stacking over the course of testing, after about 15 sessions (75 trials). |
| Address |
JSPS Research Fellow, Section of Language and Intelligence, Primate Research Institute, Kyoto University, 41 Kanrin, Inuyama, Aichi, 484-8506, Japan. misato@pri.kyoto-u.ac.jp |
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English |
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1435-9448 |
ISBN |
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| Notes |
PMID:16909233 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2451 |
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