Abstract
Nine shock levels of from 0.2 to 3.0 ma were presented to five groups of albino rats. Group I received 5 levels of shock ranging from 0.2–1.0 ma. Group II received 9 levels of shock ranging from 0.2–3.0 ma. Shock intensities of 0.6 ma, 1.6 ma or 2.5 ma were given to groups III, IV, and V respectively. Each group received either 99 or 100 shock trials, each of 1 sec. duration. The response category curves (flinch, jump, prance, run, vocalization, and no response), relating shock intensity to proportion of total possible responses were in general agreement with previous research despite numerous procedural differences among the studies. The present study extended UCR morphology data considerably beyond previously used intensity levels.
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References
Kimble, G. A. Shock intensity and avoidance learning. J. comp. physiol. Psychol., 1955, 48, 281–284.
Trabasso, T. R., & Thompson, R. W. Shock intensity and unconditioned responding in a shuttle box. J. exp. Psychol., 1962, 63, 215–216.
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1. The authors wish to thank Don Walker, Marcia Duke, Jim Shapiro, and Robert Marrone who helped collect the data for this experiment.
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Goodman, E.D., Dyal, J.A., Zinser, O. et al. UCR morphology and shock intensity. Psychon Sci 5, 431–432 (1966). https://doi.org/10.3758/BF03331033
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DOI: https://doi.org/10.3758/BF03331033