Abstract
Experiment 1 compared the responses of 10 laboratory-reared and 10 wild-reared rhesus monkeys (Macaca mulatta) to a real snake and to a range of snake-like objects. Most wild-reared monkeys showed considerable fear of the real, toy, and model snakes, whereas most lab-reared monkeys showed only very mild responses. Fear was indexed by unwillingness to approach food on the far side of the snake and by behavioral disturbance. Experiment 2 examined the effectiveness of seven flooding sessions in reducing snake fear in 8 wild-reared rhesus monkeys. Mean latency to reach for food, trials to criterion (four consecutive short latency responses), and total exposure time to criterion declined significantly across flooding sessions. Behavioral disturbance declined within sessions but not across sessions. Results of a final behavioral test revealed that substantial long-lasting changes had occurred in only 3 of the 8 monkeys. The results are discussed in the context of dissociation between different indices of fear.
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Baum, M. Extinction of avoidance responding through response prevention (flooding).Psychological Bulletin, 1970,74, 276–284.
Grey, S., Sartory, G., &Rachman, S. Synchronous and desynchronous changes during fear reduction.Behaviour Research and Therapy, 1979,17, 137–148.
Harlow, H. F. The formation of learning sets.Psychological Review, 1949,56, 51–65.
Haselrud, G. M. The effect of movement of stimulus objects upon avoidance reactions in chimpanzees.Journal of Comparative Psychology, 1938,25, 507–528.
Hebb, D. O. On the nature of fear.Psychological Review, 1946,53, 259–276.
Hodgson, R., &Rachman, S., II. Desynchrony in measures of fear.Behaviour Research and Therapy, 1974,12, 319–326.
Joslin, J., Fletcher, H., &Emlen, J. A comparison of the responses to snakes of lab- and wild-reared rhesus monkeys.Animal Behaviour, 1964,12, 348–352.
Lang, P. J. Fear reduction and fear behavior: Problems in treating a construct. In J. M. Shlien (Ed.),Research in psychotherapy (Vol. 3), 1968.
Lorenz, R. Goeldi’s monkeyCallimico goeldii Thomas 1904 preying on snakes.Folia primatologica, 1971,15, 133–142.
Marks, I. Flooding (implosion) and allied treatments. In W. S. Agras (Ed.),Behavior modification: Principles and clinical applications. Boston: Little, Brown, 1972.
Masserman, J. H., &Pechtel, C. Neuroses in monkeys: A preliminary report of experimental observations.Annals of the New York Academy of Sciences, 1953,56, 253–265.
Mineka, S. The role of fear in theories of avoidance learning, flooding and extinction.Psychological Bulletin, 1979,86, 985–1010.
Morris, R., &Morris, D. Men and snakes. London: Hutchinson, 1965.
Murray, S. G., &King, J. E. Snake avoidance in feral and laboratory reared squirrel monkeys.Behaviour, 1973,47, 281–289.
Rachman, S. Fear and courage. San Francisco: Freeman, 1978.
Rachman, S. The return of fear.Behaviour Research and Therapy, 1979,17, 164–166.
Rachman, S., &Hodgson, R. I. Synchrony and desynchrony in fear and avoidance.Behaviour Research and Therapy, 1974,12, 311–318.
Riccio, D. C., &Silvestri, R. Extinction of avoidance behavior and the problem of residual fear.Behaviour Research and Therapy, 1973,11, 1–9.
Sackett, G. P. Measurement in observational research. In G. P. Sackett (Ed.),Observing behavior (Vol. 2). Baltimore: University Park Press, 1978.
Schiller, P. H. Innate constituents of complex responses in primates.Psychological Review, 1952,59, 177–191.
Stephenson, G. R. Cultural acquisition of a specific learned response among rhesus monkeys. In D. Starck, R. Schneider, & H. J. Kuhn (Eds.),Progress in Primatology. Stuttgart: Gustav Fischer Verlag, 1967.
Suomi, S. J. Social interactions of monkeys reared in a nuclear family environment versus monkeys reared with mothers and peers.Primates, 1974,15, 311–320.
Wilson, G. T., &Davison, G. C. Processes of fear reduction in systematic desensitization: Animal studies.Psychological Bulletin, 1971,76, 1–14.
Yerkes, R. M., &Yerkes, A. W. Nature and conditions of avoidance (fear) responses in chimpanzees.Journal of Comparative Psychology, 1936,21, 53–66.
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This research was supported in part by grants to the first author from the University of Wisconsin Graduate School and by Grant MH-27156 from the U.S. Public Health Service.
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Mineka, S., Keir, R. & Price, V. Fear of snakes in wild- and laboratory-reared rhesus monkeys (Macaca mulatta). Animal Learning & Behavior 8, 653–663 (1980). https://doi.org/10.3758/BF03197783
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DOI: https://doi.org/10.3758/BF03197783