| Records |
| Author |
Rumbaugh, D.M.; Savage-Rumbaugh, S.; Hegel, M.T. |
| Title |
Summation in the chimpanzee (Pan troglodytes) |
Type |
Journal Article |
| Year |
1987 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
13 |
Issue |
2 |
Pages |
107-115 |
| Keywords |
Animals; Choice Behavior; *Cognition; Male; *Mathematics; *Pan troglodytes; Visual Perception |
| Abstract |
In this research, we asked whether 2 chimpanzee (Pan troglodytes) subjects could reliably sum across pairs of quantities to select the greater total. Subjects were allowed to choose between two trays of chocolates. Each tray contained two food wells. To select the tray containing the greater number of chocolates, it was necessary to sum the contents of the food wells on each tray. In experiments where food wells contained from zero to four chocolates, the chimpanzees chose the greater value of the summed wells on more than 90% of the trials. In the final experiment, the maximum number of chocolates assigned to a food well was increased to five. Choice of the tray containing the greater sum still remained above 90%. In all experiments, subjects reliably chose the greater sum, even though on many trials a food well on the “incorrect” tray held more chocolates than either single well on the “correct” tray. It was concluded that without any known ability to count, these chimpanzees used some process of summation to combine spatially separated quantities. Speculation regarding the basis for summation includes consideration of perceptual fusion of pairs of quantities and subitization. |
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English |
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| ISSN |
0097-7403 |
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| Notes |
PMID:3572305 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2785 |
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| Author |
Matsuzawa, T. |
| Title |
Use of numbers by a chimpanzee |
Type |
Journal Article |
| Year |
1985 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
315 |
Issue |
6014 |
Pages |
57-59 |
| Keywords |
Animals; Behavior, Animal/physiology; Cognition; Female; Mathematics; Pan troglodytes/*physiology |
| Abstract |
Recent studies have examined linguistic abilities in apes. However, although human mathematical abilities seem to be derived from the same foundation as those in language, we have little evidence for mathematical abilities in apes (but for exceptions see refs 7-10). In the present study, a 5-yr-old female chimpanzee (Pan troglodytes), 'Ai', was trained to use Arabic numerals to name the number of items in a display. Ai mastered numerical naming from one to six and was able to name the number, colour and object of 300 types of samples. Although no particular sequence of describing samples was required, the chimpanzee favoured two sequences (colour/object/number and object/colour/number). The present study demonstrates that the chimpanzee was able to describe the three attributes of the sample items and spontaneously organized the 'word order'. |
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| ISSN |
0028-0836 |
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| Notes |
PMID:3990808 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2793 |
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| Author |
McGonigle, B. |
| Title |
Can apes learn to count? |
Type |
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| Year |
1985 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
315 |
Issue |
6014 |
Pages |
16-17 |
| Keywords |
Animals; Behavior, Animal/physiology; Cognition; Pan troglodytes/*physiology |
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English |
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| ISSN |
0028-0836 |
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| Notes |
PMID:3990806 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2794 |
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| Author |
Gallup, G.G.J. |
| Title |
Do minds exist in species other than our own? |
Type |
Journal Article |
| Year |
1985 |
Publication |
Neuroscience and Biobehavioral Reviews |
Abbreviated Journal |
Neurosci Biobehav Rev |
| Volume |
9 |
Issue |
4 |
Pages |
631-641 |
| Keywords |
Animals; Awareness; *Behavior, Animal; Child Psychology; Child, Preschool; *Cognition; Consciousness; Evolution; Humans; Infant; Language; Pan troglodytes; Philosophy; Psychological Theory; Species Specificity |
| Abstract |
An answer to the question of animal awareness depends on evidence, not intuition, anecdote, or debate. This paper examines some of the problems inherent in an analysis of animal awareness, and whether animals might be aware of being aware is offered as a more meaningful distinction. A framework is presented which can be used to make a determination about the extent to which other species have experiences similar to ours based on their ability to make inferences and attributions about mental states in others. The evidence from both humans and animals is consistent with the idea that the capacity to use experience to infer the experience of others is a byproduct of self-awareness. |
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English |
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Series Issue |
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Edition |
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| ISSN |
0149-7634 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:4080281 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2808 |
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| Author |
Pennisi, E. |
| Title |
Are out primate cousins 'conscious'? |
Type |
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| Year |
1999 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
284 |
Issue |
5423 |
Pages |
2073-2076 |
| Keywords |
Animals; *Behavior, Animal; Cebus; *Consciousness; Empathy; Humans; Instinct; Intelligence; Learning; *Mental Processes; Pan troglodytes; *Primates |
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English |
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| ISSN |
0036-8075 |
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| Notes |
PMID:10409060 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2843 |
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| Author |
Fuentes, A.; Malone, N.; Sanz, C.; Matheson, M.; Vaughan, L. |
| Title |
Conflict and post-conflict behavior in a small group of chimpanzees |
Type |
Journal Article |
| Year |
2002 |
Publication |
Primates |
Abbreviated Journal |
Primates |
| Volume |
43 |
Issue |
3 |
Pages |
223-235 |
| Keywords |
Aggression; Animals; *Conflict (Psychology); Female; Housing, Animal; Male; Pan troglodytes/*psychology; *Social Behavior |
| Abstract |
Chimpanzee research plays a central role in the discussions of conflict negotiation. Reconciliation, or the attraction and affiliation of former opponents following conflict, has been proposed as a central element of conflict negotiation in chimpanzees and various other taxa. In an attempt to expand the database of chimpanzee conflict resolution, conflict and post-conflict behavior were recorded for a small group of socially housed chimpanzees at the Chimpanzee and Human Communication Institute, at Central Washington University. Data were collected over six 6-week periods between 1997 and 2000, for a total of 840 hours of observation, resulting in a substantial post-conflict (PC) and matched control (MC) data set. The data demonstrate this group's tendencies to maintain visual contact and closer proximity after conflicts. Dyadic corrected conciliatory tendencies ranged between 0 – 37.5% and averaged 17.25% across all dyads. Individual corrected conciliatory tendencies ranged between 5.8 and 32%. The results of this study combined with recent publications on captive and free-ranging chimpanzee post-conflict behavior suggest that variation in post-conflict behavior may be important to our understanding of chimpanzee conflict negotiation, and may also have implications for the design and management of captive chimpanzee enclosures and social groups, respectively. |
| Address |
Department of Anthropology, Notre Dame University, Notre Dame, Indiana 46556-5639, USA. anthro@nd.edu |
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English |
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| ISSN |
0032-8332 |
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| Notes |
PMID:12145403 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
2885 |
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| Author |
Weiss, A.; King, J.E.; Figueredo, A.J. |
| Title |
The heritability of personality factors in chimpanzees (Pan troglodytes) |
Type |
Journal Article |
| Year |
2000 |
Publication |
Behavior Genetics |
Abbreviated Journal |
Behav Genet |
| Volume |
30 |
Issue |
3 |
Pages |
213-221 |
| Keywords |
Animals; Female; Humans; Male; Models, Genetic; Pan troglodytes/*genetics; Personality/*genetics; Social Environment |
| Abstract |
Human personality and behavior genetic studies have resulted in a growing consensus that five heritable factors account for most variance in human personality. Prior research showed that chimpanzee personality is composed of a dominance-related factor and five human-like factors--Surgency, Dependability, Emotional Stability, Agreeableness, and Openness. Genetic, shared zoo, and nonshared environmental variance components of the six factors were estimated by regressing squared phenotypic differences of all possible pairs of chimpanzees onto 1 – Rij, where Rij equals the degree of relationship and a variable indicating whether the pair was housed in the same zoo. Dominance showed significant narrow-sense heritability. Shared zoo effects accounted for only a negligible proportion of the variance for all factors. |
| Address |
Department of Psychology, University of Arizona, Tucson 85721, USA. aweiss@u.arizona.edu |
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English |
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Edition |
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| ISSN |
0001-8244 |
ISBN |
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Medium |
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| Notes |
PMID:11105395 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4143 |
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| Author |
Rumbaugh, D.M.; Riesen, A.H.; Wright, S.C. |
| Title |
Creative responsiveness to objects: a report of a pilot study with young apes |
Type |
Journal Article |
| Year |
1972 |
Publication |
Folia Primatologica; International Journal of Primatology |
Abbreviated Journal |
Folia Primatol (Basel) |
| Volume |
17 |
Issue |
5 |
Pages |
397-403 |
| Keywords |
Animals; *Creativeness; *Hominidae; Pan troglodytes; Play and Playthings; *Problem Solving |
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English |
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Edition |
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| ISSN |
0015-5713 |
ISBN |
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| Notes |
PMID:5082622 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4183 |
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| Author |
Menzel, E.W.J. |
| Title |
Communication about the environment in a group of young chimpanzees |
Type |
Journal Article |
| Year |
1971 |
Publication |
Folia Primatologica; International Journal of Primatology |
Abbreviated Journal |
Folia Primatol (Basel) |
| Volume |
15 |
Issue |
3 |
Pages |
220-232 |
| Keywords |
*Animal Communication; Animals; Environment; Fear; Leadership; *Pan troglodytes; Problem Solving; Social Behavior; Species Specificity; Vocalization, Animal |
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English |
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Edition |
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| ISSN |
0015-5713 |
ISBN |
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| Notes |
PMID:5120654 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4184 |
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