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Barton, R.A.; Whiten, A. |
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Title |
Feeding competition among female olive baboons, Papio anubis |
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Journal Article |
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1993 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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46 |
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4 |
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777-789 |
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Abstract. Competition for food is thought to play a key role in the social organization of group-living female primates, leading to the prediction that individual foraging success will be partly regulated by dominance relationships. Among adult females in a group of free-ranging olive baboons, dominance rank was significantly correlated with nutrient acquisition rates (feeding rates and daily intakes), but not with dietary diversity or quality, nor with activity budgets. The mean daily food intake of the three highest-ranking females was 30% greater than that of the three lowest-ranking females, providing an explanation for relationships between female rank and fertility found in a number of other studies of group-living primates. The intensity of feeding competition, as measured by supplant rates and spatial clustering of individuals, increased during the dry season, a period of low food availability, seemingly because foods eaten then were more clumped in distribution than those eaten in the wet season. Implications for models of female social structure and maximum group size are discussed. |
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Equine Behaviour @ team @ |
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4258 |
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Author |
Byrne, R.W.; Whiten, A.; Henzi, S.P. |
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Title |
Social relationships of mountain baboons: Leadership and affiliation in a non-female-bonded monkey |
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Journal Article |
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Year |
1990 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
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Volume |
20 |
Issue |
4 |
Pages |
313-329 |
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Keywords |
relationships; one-male groups; female-bonding; spacing; support; Papio ursinus; Papio hamadryas |
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Abstract 10.1002/ajp.1350200409.abs Instead of close and differentiated relationships among adult females, the accepted norm for savanna baboons, groups of Drakensberg mountain baboons (Papio ursinus) showed strong affiliation of females towards a single male. The same male was usually the decision-making animal in controlling group movements. Lactating or pregnant females focused their grooming on this “leader” male, producing a radially patterned sociogram, as in the desert baboon (P. hamadryas); the leader male supported young animals in the group against aggression and protected them against external threats. Unlike typical savanna baboons, these mountain baboons rarely displayed approach-retreat or triadic interactions, and entirely lacked coalitions among adult females. Both groups studied were reproductively one-male; male-female relationships in one were like those in a unit of a hamadryas male at his peak, while the other group resembled the unit of an old hamadryas male, who still leads the group, with a male follower starting to build up a new unit and already monopolizing mating. In their mountain environment, where the low population density suggests conditions as harsh for baboons as in deserts, adults in these groups kept unusually large distances apart during ranging; kin tended to range apart, and spacing of adults was greatest at the end of the dry, winter season. These facts support the hypothesis that sparse food is responsible for convergence with hamadryas social organization. It is suggested that all baboons, though matrilocal, are better categorized as “cross-sex-bonded” than “female bonded”. |
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Wiley Subscription Services, Inc., A Wiley Company |
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1098-2345 |
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Equine Behaviour @ team @ |
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5309 |
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Whiten, A.; Ham, R. |
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On the nature and evolution of imitation in the animal kingdom: reappraisal of a century of research. |
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1992 |
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Adv. Study Behav. |
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21 |
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239-283 |
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Equine Behaviour @ team @ |
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5599 |
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Whiten, A.; Byrne, R.W. |
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Title |
Tactical deception in primates |
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Journal Article |
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Year |
1988 |
Publication |
Behavioral and Brain Sciences |
Abbreviated Journal |
Behav. Brain Sci. |
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Volume |
11 |
Issue |
02 |
Pages |
233-244 |
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Abstract |
ABSTRACT Tactical deception occurs when an individual is able to use an “honest” act from his normal repertoire in a different context to mislead familiar individuals. Although primates have a reputation for social skill, most primate groups are so intimate that any deception is likely to be subtle and infrequent. Published records are sparse and often anecdotal. We have solicited new records from many primatologists and searched for repeating patterns. This has revealed several different forms of deceptive tactic, which we classify in terms of the function they perform. For each class, we sketch the features of another individual's state of mind that an individual acting with deceptive intent must be able to represent, thus acting as a “natural psychologist.” Our analysis will sharpen attention to apparent taxonomic differences. Before these findings can be generalized, however, behavioral scientists must agree on some fundamental methodological and theoretical questions in the study of the evolution of social cognition. |
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Cambridge Journals Online |
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1469-1825 |
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no |
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Equine Behaviour @ team @ |
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5937 |
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Author |
Byrne, R.W.; Whiten, A. |
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Title |
Tactical deception in primates: the 1990 database |
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Book Whole |
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Year |
1990 |
Publication |
Primate Reports |
Abbreviated Journal |
Primate Rep. |
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27 |
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1-101 |
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German Primate Center |
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no |
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Equine Behaviour @ team @ |
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6172 |
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Author |
Custance, D.; Whiten, A.; Fredman, T. |
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Title |
Social learning of an artificial fruit task in capuchin monkeys (Cebus apella). |
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Journal Article |
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Year |
1999 |
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Journal of Comparative Psychology |
Abbreviated Journal |
J. Comp. Psychol. |
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113 |
Issue |
1 |
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13-23 |
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Social learning in 11 human-raised capuchin monkeys (Cebus apella) was investigated using an artificial fruit that was designed as an analogue of natural foraging problems faced by primates. Each subject observed a human model open each of 3 principal components on the fruit in 1 of 2 alternative ways (“morphs”). The capuchin monkeys reproduced, to differing extents, the alternative techniques used for opening 1 component of the task (poking vs. pulling while twisting out a pair of smooth plastic bolts) but not the other 2. From the subjects' actions on the bolt latch, independent coders could recognize which morph they had witnessed, and they observed a degree of matching to the demonstrator's act consistent with simple imitation or object movement reenactment (A learns from watching B how an object, or parts of an object, move). Thus, these capuchins were capable of more complex social learning than has been recently ascribed to monkeys. (PsycINFO Database Record (c) 2016 APA, all rights reserved) |
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no |
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Equine Behaviour @ team @ |
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6563 |
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Author |
Horner, V.; Whiten, A.; Flynn, E.; de Waal, F.B.M. |
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Title |
Faithful replication of foraging techniques along cultural transmission chains by chimpanzees and children |
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Journal Article |
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Year |
2006 |
Publication |
Proceedings of the National Academy of Sciences of the United States of America |
Abbreviated Journal |
Proc. Natl. Acad. Sci. U.S.A. |
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Volume |
103 |
Issue |
37 |
Pages |
13878-13883 |
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Keywords |
Animals; Child, Preschool; Humans; *Imitative Behavior; Pan troglodytes/*psychology |
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Abstract |
Observational studies of wild chimpanzees (Pan troglodytes) have revealed population-specific differences in behavior, thought to represent cultural variation. Field studies have also reported behaviors indicative of cultural learning, such as close observation of adult skills by infants, and the use of similar foraging techniques within a population over many generations. Although experimental studies have shown that chimpanzees are able to learn complex behaviors by observation, it is unclear how closely these studies simulate the learning environment found in the wild. In the present study we have used a diffusion chain paradigm, whereby a behavior is passed from one individual to the next in a linear sequence in an attempt to simulate intergenerational transmission of a foraging skill. Using a powerful three-group, two-action methodology, we found that alternative methods used to obtain food from a foraging device (“lift door” versus “slide door”) were accurately transmitted along two chains of six and five chimpanzees, respectively, such that the last chimpanzee in the chain used the same method as the original trained model. The fidelity of transmission within each chain is remarkable given that several individuals in the no-model control group were able to discover either method by individual exploration. A comparative study with human children revealed similar results. This study is the first to experimentally demonstrate the linear transmission of alternative foraging techniques by non-human primates. Our results show that chimpanzees have a capacity to sustain local traditions across multiple simulated generations. |
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Centre for Social Learning and Cognitive Evolution, School of Psychology, University of St. Andrews, Fife KY16 9JP, United Kingdom |
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0027-8424 |
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PMID:16938863 |
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no |
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Call Number |
refbase @ user @ |
Serial |
159 |
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Author |
Whiten, A.; Horner, V.; de Waal, F.B.M. |
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Title |
Conformity to cultural norms of tool use in chimpanzees |
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Journal Article |
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Year |
2005 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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437 |
Issue |
7059 |
Pages |
737-740 |
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Keywords |
Aging/physiology; Animals; Culture; Feeding Behavior/physiology; Female; Pan troglodytes/*physiology/*psychology; *Social Conformity; Technology; Time Factors |
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Rich circumstantial evidence suggests that the extensive behavioural diversity recorded in wild great apes reflects a complexity of cultural variation unmatched by species other than our own. However, the capacity for cultural transmission assumed by this interpretation has remained difficult to test rigorously in the field, where the scope for controlled experimentation is limited. Here we show that experimentally introduced technologies will spread within different ape communities. Unobserved by group mates, we first trained a high-ranking female from each of two groups of captive chimpanzees to adopt one of two different tool-use techniques for obtaining food from the same 'Pan-pipe' apparatus, then re-introduced each female to her respective group. All but two of 32 chimpanzees mastered the new technique under the influence of their local expert, whereas none did so in a third population lacking an expert. Most chimpanzees adopted the method seeded in their group, and these traditions continued to diverge over time. A subset of chimpanzees that discovered the alternative method nevertheless went on to match the predominant approach of their companions, showing a conformity bias that is regarded as a hallmark of human culture. |
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Centre for Social Learning and Cognitive Evolution, School of Psychology, University of St Andrews, St Andrews, Fife, KY16 9JP, UK. a.whiten@st-and.ac.uk |
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English |
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1476-4687 |
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PMID:16113685 |
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no |
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refbase @ user @ |
Serial |
163 |
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Author |
Whiten, A.; van Schaik, C.P. |
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Title |
The evolution of animal 'cultures' and social intelligence |
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Journal Article |
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2007 |
Publication |
Philosophical transactions of the Royal Society of London. Series B, Biological sciences |
Abbreviated Journal |
Philos Trans R Soc Lond B Biol Sci |
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362 |
Issue |
1480 |
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603-620 |
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Abstract |
Decades-long field research has flowered into integrative studies that, together with experimental evidence for the requisite social learning capacities, have indicated a reliance on multiple traditions ('cultures') in a small number of species. It is increasingly evident that there is great variation in manifestations of social learning, tradition and culture among species, offering much scope for evolutionary analysis. Social learning has been identified in a range of vertebrate and invertebrate species, yet sustained traditions appear rarer, and the multiple traditions we call cultures are rarer still. Here, we examine relationships between this variation and both social intelligence-sophisticated information processing adapted to the social domain-and encephalization. First, we consider whether culture offers one particular confirmation of the social ('Machiavellian') intelligence hypothesis that certain kinds of social life (here, culture) select for intelligence: 'you need to be smart to sustain culture'. Phylogenetic comparisons, particularly focusing on our own study animals, the great apes, support this, but we also highlight some paradoxes in a broader taxonomic survey. Second, we use intraspecific variation to address the converse hypothesis that 'culture makes you smart', concluding that recent evidence for both chimpanzees and orang-utans support this proposition. |
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Centre for Social Learning and Cognitive Evolution, School of Psychology, University of St Andrews, St Andrews KY16 9JP, UK |
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0962-8436 |
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PMID:17255007 |
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no |
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refbase @ user @ |
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729 |
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Author |
Whiten, A. |
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Title |
The second inheritance system of chimpanzees and humans |
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Journal Article |
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Year |
2005 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
437 |
Issue |
7055 |
Pages |
52-55 |
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Keywords |
Animals; Animals, Wild/physiology/psychology; Behavior, Animal/*physiology; *Culture; Female; Humans; Imitative Behavior; Learning/*physiology; Pan troglodytes/*physiology/psychology; *Social Behavior; Technology |
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Half a century of dedicated field research has brought us from ignorance of our closest relatives to the discovery that chimpanzee communities resemble human cultures in possessing suites of local traditions that uniquely identify them. The collaborative effort required to establish this picture parallels the one set up to sequence the chimpanzee genome, and has revealed a complex social inheritance system that complements the genetic picture we are now developing. |
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Centre for Social Learning and Cognitive Evolution, and Scottish Primate Research Group, School of Psychology, University of St Andrews, St Andrews, Fife KY16 9JP, UK. a.whiten@st-and.ac.uk |
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1476-4687 |
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PMID:16136127 |
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Call Number |
refbase @ user @ |
Serial |
730 |
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