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Seyfarth, R.M.; Cheney, D.L. |
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Title |
Cognitive strategies and the representation of social relations by monkeys |
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2001 |
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Nebraska Symposium on Motivation. Nebraska Symposium on Motivation |
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Nebr Symp Motiv |
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47 |
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145-177 |
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Adaptation, Biological; Animals; *Evolution; Family; Female; Haplorhini; Male; Memory; Primates; *Selection (Genetics); *Social Behavior; Social Dominance; *Social Perception |
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University of Pennsylvania, USA |
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0146-7875 |
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PMID:11759347 |
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345 |
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Author |
Seyfarth, R.M.; Cheney, D.L. |
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Title |
Meaning and emotion in animal vocalizations |
Type |
Journal Article |
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Year |
2003 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
Ann N Y Acad Sci |
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Volume |
1000 |
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32-55 |
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Keywords |
Acoustics; *Affect; Animals; Behavior, Animal; *Intention; Posture; Sound Spectrography; *Vocalization, Animal |
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Abstract |
Historically, a dichotomy has been drawn between the semantic communication of human language and the apparently emotional calls of animals. Current research paints a more complicated picture. Just as scientists have identified elements of human speech that reflect a speaker's emotions, field experiments have shown that the calls of many animals provide listeners with information about objects and events in the environment. Like human speech, therefore, animal vocalizations simultaneously provide others with information that is both semantic and emotional. In support of this conclusion, we review the results of field experiments on the natural vocalizations of African vervet monkeys, diana monkeys, baboons, and suricates (a South African mongoose). Vervet and diana monkeys give acoustically distinct alarm calls in response to the presence of leopards, eagles, and snakes. Each alarm call type elicits a different, adaptive response from others nearby. Field experiments demonstrate that listeners compare these vocalizations not just according to their acoustic properties but also according to the information they convey. Like monkeys, suricates give acoustically distinct alarm calls in response to different predators. Within each predator class, the calls also differ acoustically according to the signaler's perception of urgency. Like speech, therefore, suricate alarm calls convey both semantic and emotional information. The vocalizations of baboons, like those of many birds and mammals, are individually distinctive. As a result, when one baboon hears a sequence of calls exchanged between two or more individuals, the listener acquires information about social events in its group. Baboons, moreover, are skilled “eavesdroppers:” their response to different call sequences provides evidence of the sophisticated information they acquire from other individuals' vocalizations. Baboon males give loud “wahoo” calls during competitive displays. Like other vocalizations, these highly emotional calls provide listeners with information about the caller's dominance rank, age, and competitive ability. Although animal vocalizations, like human speech, simultaneously encode both semantic and emotional information, they differ from language in at least one fundamental respect. Although listeners acquire rich information from a caller's vocalization, callers do not, in the human sense, intend to provide it. Listeners acquire information as an inadvertent consequence of signaler behavior. |
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Departments of Psychology and Biology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. seyfarth@psych.upenn.edu |
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0077-8923 |
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PMID:14766619 |
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refbase @ user @ |
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688 |
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Author |
Seyfarth, R.M.; Cheney, D.L. |
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Title |
Signalers and receivers in animal communication |
Type |
Journal Article |
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Year |
2003 |
Publication |
Annual review of psychology |
Abbreviated Journal |
Annu Rev Psychol |
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54 |
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145-173 |
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Keywords |
Affect; *Animal Communication; Animals; Arousal; Auditory Perception; Motivation; *Social Behavior; Social Environment; Species Specificity; *Vocalization, Animal |
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In animal communication natural selection favors callers who vocalize to affect the behavior of listeners and listeners who acquire information from vocalizations, using this information to represent their environment. The acquisition of information in the wild is similar to the learning that occurs in laboratory conditioning experiments. It also has some parallels with language. The dichotomous view that animal signals must be either referential or emotional is false, because they can easily be both: The mechanisms that cause a signaler to vocalize do not limit a listener's ability to extract information from the call. The inability of most animals to recognize the mental states of others distinguishes animal communication most clearly from human language. Whereas signalers may vocalize to change a listener's behavior, they do not call to inform others. Listeners acquire information from signalers who do not, in the human sense, intend to provide it. |
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Department of Psychology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. seyfarth@psych.upenn.edu |
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0066-4308 |
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PMID:12359915 |
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refbase @ user @ |
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690 |
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Author |
Cheney, D.L.; Seyfarth, R.M. |
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Title |
How Monkeys See the World |
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Miscellaneous |
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1990 |
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Equine Behaviour @ team @ |
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4866 |
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Author |
Seyfarth, R.M.; Cheney, D.L. |
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Title |
The Structure of Social Knowledge in Monkeys |
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2003 |
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Animal Social Complexity: Intelligence, Culture, and Individualized Societies |
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Harvard University Press |
Place of Publication |
Cambridge, Massachusetts |
Editor |
F. B. M. de Waal; P. L. Tyack |
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English |
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Animal Social Complexity: Intelligence, Culture, and Individualized Societies |
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978-0674009295 |
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464 |
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Author |
Cheney, D. l .; Seyfarth, R. M. |
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Title |
Social complexity and the information acquired during eavesdropping by primates and other animals |
Type |
Book Chapter |
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2004 |
Publication |
Animal Communication networks |
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In many of the studies reviewed in this book, eavesdropping takes the
following form: a subject has the opportunity to monitor, or eavesdrop upon, an
interaction between two other animals,Aand B. The subject then uses the information
obtained through these observations to assess A`s and B`s relative dominance
or attractiveness as a mate (e.g. Mennill et al., 2002; Ch. 2). For example, Oliveira
et al. (1998) found that male fighting fish Betta splendens that had witnessed two
other males involved in an aggressive interaction subsequently responded more
strongly to the loser of that interaction than the winner. Subjects-behaviour could
not have been influenced by any inherent differences between the two males, because
subjects responded equally strongly to the winner and the loser of competitive
interactions they had not observed. Similarly, Peake et al. (2001) presented
male great tits Parus major with the opportunity to monitor an apparent competitive
interaction between two strangers by simulating a singing contest using two
loudspeakers. The relative timing of the singing bouts (as measured by the degree
of overlap between the two songs) provided information about each “contestants”
relative status. Following the singing interaction, one of the “contestants” was
introduced into the male`s territory. Males responded significantly less strongly
to singers that had apparently just “lost” the interaction (see also McGregor &
Dabelsteen, 1996; Naguib et al., 1999; Ch. 2).
What information does an individual acquire when it eavesdrops on others?
In theory, an eavesdropper could acquire information of many different sorts:
about A, about B, about the relationship between A and B, or about the place of
Animal Communication Networks, ed. Peter K. McGregor. Published by Cambridge University Press.
c.
Cambridge University Press 2005.
583
P1: JZZ/... P2: JZZ/...
0521823617c25.xml CU1917B/McGregor 0 521 582361 7 October 7, 2004 22:31
584 D. L. Cheney & R. M. Seyfarth
A`s and B`s relationship in a larger social framework. The exact information acquired
will probably reflect the particular species social structure. For example,
songbirds like great tits live in communities in which six or seven neighbours
surround each territory-holding male. Males appear to benefit from the knowledge
that certain individuals occupy specific areas (e.g. Brooks & Falls, 1975), that
competitive interactions between two different neighbours have particular outcomes,
and that these outcomes are stable over time. We would, therefore, expect
an eavesdropping great tit not only to learn that neighbour A was dominant to
neighbour B, for example, but also to form the expectation that A was likely to
defeat B in all future encounters. More speculatively, because the outcome of territorial
interactions are often site specific (reviewed by Bradbury & Vehrencamp,
1998), we would expect eavesdropping tits to learn further that A dominates B
in some areas but B dominates A in others. In contrast, the information gained
from monitoring neighbours interactions would unlikely be sufficient to allow
the eavesdropper to rank all of its neighbours in a linear dominance hierarchy,
because not all neighbouring males would come into contact with one another.
Such information would be difficult if not impossible to acquire; it might also be
of little functional value.
In contrast, species that live in large, permanent social groups have a much
greater opportunity to monitor the social interactions of many different individuals
simultaneously. Monkey species such as baboons Papio cynocephalus, for
example, typically live in groups of 80 or more individuals, which include several
matrilineal families arranged in a stable, linear dominance rank order (Silk et al.,
1999). Offspring assume ranks similar to those of their mothers, and females maintain
close bonds with their matrilineal kin throughout their lives. Cutting across
these stable long-term relationships based on rank and kinship are more transient
bonds: for example, the temporary associations formed between unrelated
females whose infants are of similar ages, and the “friendships” formed between
adult males and lactating females as an apparent adaptation against infanticide
(Palombit et al., 1997, 2001). In order to compete successfully within such groups, it
would seem advantageous for individuals to recognize who outranks whom, who
is closely bonded to whom, and who is likely to be allied to whom (Harcourt, 1988,
1992; Cheney & Seyfarth, 1990; see below). The ability to adopt a third party`s perspective
and discriminate among the social relationships that exist among others
would seem to be of great selective benefit.
In this chapter, we review evidence for eavesdropping in selected primate
species and we consider what sort of information is acquired when one individual
observes or listens in on the interactions of others. We then compare eavesdropping
by primates with eavesdropping in other animal species, focusing on both
potential differences and directions for further research |
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Cambridge University Press |
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Cambridge, Massachusetts |
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McGregor, P.K. |
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refbase @ user @ |
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495 |
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Author |
Cheney, D.L.; Seyfarth, R.M |
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Title |
Social and non.social knowledge in vervet monkeys |
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Year |
1988 |
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Machiavellian Intelligence |
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255-270 |
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Oxford Univ Press |
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Oxford |
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0-19-852175-8 |
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Equine Behaviour @ team @ Byrne+Whiten1988 |
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4787 |
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Cheney, D.L.; Seyfarth, R.M. |
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Title |
The recognition of social alliances among vervet monkeys |
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1986 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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34 |
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1722-1731 |
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Equine Behaviour @ team @ |
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4864 |
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Cheney, D.L.; Seyfarth, R.M. |
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Title |
Reconciliation and redirected aggression in vervet monkeys, Behaviour |
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1989 |
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Behaviour |
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Behaviour |
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110 |
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258-275 |
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Equine Behaviour @ team @ |
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4865 |
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Seyfarth, R. M.; Cheney, D. L. |
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Title |
Do monkeys understand their realtions? |
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1988 |
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Machiavellian Intelligence |
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Oxford University Press |
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Oxford |
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Byrne, R.; Whiten, A. |
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Equine Behaviour @ team @ |
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5457 |
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