Excitatory and inhibitory conditioning following uncorrelated presentations of CS and UCS

Abstract

In two experiments on conditioned licking in rats, we examined the effects of preexposure to a tone alone or to uncorrelated presentations of the tone and water on subsequent conditioning. Both treatments retarded excitatory conditioning in Experiment 1 and inhibitory conditioning in Experiment 2. In both cases, the uncorrelated procedure caused more severe retardation. © 1977 Psychonomic Society, Inc.