Abstract
Subjects trained under a free operant avoidance schedule were exposed to a 1-min clicker (CS) followed by an unavoidable shock (US). During the preaversive stimulus, overall response rates declined and frequency of shock increased. During this period, the response frequency distribution was U -shaped. When the US was removed, response rates increased and shock rates decreased.
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This research was supported by NSF Grant GB-8505.
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Hurwitz, H.M.B., Roberts, A.E. Suppressing an avoidance response by a pre-aversive stimulus. Psychon. Sci. 17, 305–306 (1969). https://doi.org/10.3758/BF03336544
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DOI: https://doi.org/10.3758/BF03336544