Abstract
Rats were given differential conditioning to a tone (signal for shock) and a light (signal for no shock) using the CER procedure. Response rate in the presence of the CS− (light) was compared to the unconditioned effects of the light upon the VI response rate in a no-shock control group. CER Ss showed enhanced response rates during the light, to an extent greater than that during the light presented to the control group.
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This research was supported in part by a grant from Temple University. The author thanks Richard L. Solomon, Vincent Lo-Lordo and Robert Rescorla for helpful advice and criticism.
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Hammond, L.J. Increased responding to CS− in differential CER. Psychon Sci 5, 337–338 (1966). https://doi.org/10.3758/BF03328427
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DOI: https://doi.org/10.3758/BF03328427