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Author |
Boissy, A. |
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Title |
Fear and Fearfulness in Animals |
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Year  |
1995 |
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The Quarterly Review of Biology |
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The Quarterly Review of Biology |
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70 |
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2 |
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165-191 |
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Abstract |
Persistence of individual differences in animal behavior in reactions to various environmental challenges could reflect basic divergences in temperament, which might be used to predict details of adaptive response. Although studies have been carried out on fear and anxiety in various species, including laboratory, domestic and wild animals, no consistent definition of fearfulness as a basic trait of temperament has emerged. After a classification of the events that may produce a state of fear, this article describes the great variability in behavior and in physiological patterns generally associated with emotional reactivity. The difficulties of proposing fearfulness-the general capacity to react to a variety of potentially threatening situations-as a valid basic internal variable are then discussed. Although there are many studies showing covariation among the psychobiological responses to different environmental challenges, other studies find no such correlations and raise doubts about the interpretation of fearfulness as a basic personality trait. After a critical assessment of methodologies used in fear and anxiety studies, it is suggested that discrepancies among results are mainly due to the modulation of emotional responses in animals, which depend on numerous genetic and epigenetic factors. It is difficult to compare results obtained by different methods from animals reared under various conditions and with different genetic origins. The concept of fearfulness as an inner trait is best supported by two kinds of investigations. First, an experimental approach combining ethology and experimental psychology produces undeniable indicators of emotional reactivity. Second, genetic lines selected for psychobiological traits prove useful in establishing between behavioral and neuroendocrine aspects of emotional reactivity. It is suggested that fearfulness could be considered a basic feature of the temperament of each individual, one that predisposes it to respond similarly to a variety of potentially alarming challenges, but is nevertheless continually modulated during development by the interaction of genetic traits of reactivity with environmental factors, particularly in the juvenile period. Such interaction may explain much of the interindividual variability observed in adaptive responses. |
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The University of Chicago Press |
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0033-5770 |
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doi: 10.1086/418981 |
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Equine Behaviour @ team @ |
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6664 |
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Author |
Shmidt Mech, L.D. |
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Title |
Wolf pack size and food acquisition |
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1997 |
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Am Nat |
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150 |
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Equine Behaviour @ team @ Shmidt Mech1997 |
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6482 |
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Author |
Kräußlich, H.; Brem, G. |
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Title |
Tierzucht und allgemeine Landwirtschaftslehre für Tiermediziner |
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1997 |
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Enke |
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Stuttgart |
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Equine Behaviour @ team @ |
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6542 |
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Author |
Breitenmoser, U. |
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Title |
Large predators in the Alps: the fall and rise of man's competitors |
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1998 |
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Biol Conserv |
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83 |
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Equine Behaviour @ team @ Breitenmoser1998 |
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6450 |
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Author |
Gese, E.M.; Ruff, R.L. |
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Title |
Howling by coyotes (Canis latrans): variation among social classes, seasons, and pack sizes |
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Journal Article |
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1998 |
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Can J Zool |
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76 |
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Equine Behaviour @ team @ Gese1998 |
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6462 |
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Author |
Peters, G.; Tembrock, G. |
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Title |
Subharmonics, biphonation, and deterministic chaos in mammal vocalizations |
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Journal Article |
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Year |
1998 |
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Bioacoustics |
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9 |
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Equine Behaviour @ team @ Peters1998 |
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6483 |
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Title |
Animal Acoustic Communication: Sound Analysis and Research Methods |
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1998 |
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Springer |
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Berlin |
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Equine Behaviour @ team @ ref56 |
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6497 |
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Author |
Nissen, J. |
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Title |
Enzyklopädie der Pferderassen |
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1998 |
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Kosmos |
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Stuttgart |
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Equine Behaviour @ team @ |
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6543 |
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Author |
Mladenoff, D.J.; Sickley, T.A.; Wydeven, A.P. |
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Title |
Predicting gray wolf landscape recolonization: logistic regression models vs. new field data |
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1999 |
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Ecol Appl |
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9 |
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Equine Behaviour @ team @ Mladenoff1999 |
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6442 |
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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 |
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J. Comp. Psychol. |
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113 |
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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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Equine Behaviour @ team @ |
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6563 |
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