Abstract
Five dogs were given a 480-cps tone followed by shock for more than 200 trials. A 200-cps tone was then introduced followed by a person petting the dog at the end of the conditional signal (CS) for 50 trials. Finally, the 480-cps tone-shock (T-S) sequence was reintroduced for five trials, after which the person entered the experimental room and stood beside the dog during one additional T-S sequence.
It was observed that both the heart rate (HR) increase to shock, and the HR decrease to petting could be conditioned rapidly (1–5 trials). These findings are discussed in terms of the theory of stimulus substitution in classical HR conditioning.
After the person had been made part of a CS for petting, and the T-S sequence reintroduced, the HR increase during the CS was reduced. The HR response to the shock, however, was greater than the response to this US when the dog was alone. A control group, given the same T-S sequence with a person present who had not been a CS for petting, did not show any significant HR changes from the usual response given to the T-S sequence.
It is emphasized that these findings, in conjunction with earlier reports, indicate that the cardiovascular system may be a valuable index in studying the psychophysiology of socialization processes.
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References
Anderson, S., and Gantt, W. H.: The effect of person on cardiac and motor responsivity to shock in dogs.Cond. Reflex,1: 181–189, 1966.
Fisher, A. E.: The effects of differential early treatment on the social and exploratory behavior of puppies. Unpublished doctoral dissertation, Pennsylvania State University, 1955.
Fuller, J. L.: Effects of experimental deprivation upon behavior in animals.World Cong. Psychiat.,3: 223–227, 1963.
Gantt, W. H., Newton, J. E. O., Royer, F. L., and Stephens, J. H.: Effect of person.Cond. Reflex,1: 18–35, 1966.
Hebb, D. O.: The mammal and his environment.Am. J. Psychiat.,111: 826, 1955.
Lynch, J. J.: The cardiac orienting response and its relationship to the cardiac conditional response in dogs.Cond. Reflex,2: 138–152, 1967.
Lynch, J. J.: Heart rate variability of dogs in classical conditioning.Psychol. Record, January, 1968.
Lynch, J. J., and McCarthy, J. F.: The effect of petting on a classically conditioned emotional response.Behav. Res. Ther.,5: 55–62, 1967.
Lynch, J. J., and McCarthy, J. F.: Social responding in dogs: Heart rate changes to a person.Psychophysiology. In press.
McDonald, D. G., Stern, J. A., and Hahn, W. W.: Classical heart rate conditioning in the rat.J. Psychosom. Res.,7: 97–106, 1963.
McIntire, R. W., and Colley, T. A.: Social reinforcement in the dog.Psychol. Rep.,20: 843–846, 1967.
Melzack, R., and Scott, T. H.: The effects of early experience on the response to pain.J. Comp. Physiol. Psychol.,50: 155–161, 1957.
Murphee, O. D., Peters, J. E., and Dykman, R. A.: Effect of person on nervous, stable and crossbred pointer dogs.Conditional Reflex,2: 273–276, 1967.
Notterman, J. M., Schoenfeld, W. H., and Bersh, P. J.: Conditioned heart rate response in human being during experimental anxiety.J. Comp. Physiol. Psychol.,45: 1–8, 1952.
Pavlov, I. P.:Lectures on Conditioned Reflexes. W. H. Gantt, Trans. New York, International Publishers, 1928, p. 368.
Pavlov, I. P.:Conditioned Reflexes. G. Anrep, Tr., Oxford Press, 1927.
Royer, F. L., and Gantt, W. H.: The effect of different persons on the heart rate of dogs. Eastern Psychol. Assoc., Philadelphia, Pa., March, 1961.
Scott, J. P.: Social behavior organization and leadership in a small flock of domestic sheep.Comp. Psych. Monograph, No. 96,18: 1–29, 1945.
Scott, J. P.: The social behavior of dogs and wolves: An illustration of sociobiological systematics.Ann. N. Y. Acad. Sci.,51: 1009–1021, 1950.
Scott, J. P.: The analysis of social organization in animals.Ecology,37: 213–221, 1956.
Stanley, W. C.: The passive person as a reinforcer in isolated Beagle puppies.Psychon. Sci.,2: 21–22, 1965.
Stanley, W. C., Morris, D. D., and Trattner, A.: Conditioning with a passive person reinforcer and extinction in Shetland sheep dog puppies.Psychon. Sci.,2: 19–20, 1966.
Thompson, W. R., and Heron, W.: The effects of early restriction on activity in dogs.J. Comp. Physiol. Psychol.,47: 77–82, 1954.
Zeaman, D., and Smith, R. W.: Review of some recent findings in human cardiac conditioning.In Prokasy, W. F.:Classical Conditioning: A Symposium. New York, Appleton-Century-Crofts, 1965, p. 378–418.
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This research was supported by Grant HE 06945 from the National Institutes of Health, and was conducted at the Pavlovian Laboratory, Veterans Administration Hospital, Perry Point, Maryland. Special thanks are due to Gene Isom for his technical assistance, and to Shoji Kakigi for his suggestions in the writing of this manuscript.
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Lynch, J.J., Gantt, W.H. The heart rate component of the social reflex in dogs: The conditional effects of petting and person. Conditional Reflex 3, 69–80 (1968). https://doi.org/10.1007/BF03001139
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DOI: https://doi.org/10.1007/BF03001139