Abstract
A 10-sec stimulus (CS) correlated with response-independent food (UCS) was superimposed on food-maintained leverpressing. The UCS occurred at the (1) beginning, (2) middle, or (3) end of the CS. In the first instance, the rate of responding during the CS was less than or greater than the rate in the absence of the CS. In the second instance, the rate of responding during the CS was greatest and also exceeded the rate in the absence of the CS during the initial 5 sec preceding the UCS. During the 5 sec of CS subsequent to the UCS, the rate of responding was less than that in the absence of the CS for most subjects but was greater for some subjects. In the third instance, the rate of responding during the CS was greater than that in the absence of the CS.
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Miller, L., Judd, S. Superimposing a stimulus correlated with response-independent food on operant behavior using delayed and simultaneous conditioning procedures. Bull. Psychon. Soc. 6, 481–483 (1975). https://doi.org/10.3758/BF03337543
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DOI: https://doi.org/10.3758/BF03337543