Two conditioned taste aversion experiments with rats were conducted to establish if a target taste that had received a prior pairing with illness could be subject to second-order conditioning during extinction treatment in compound with a flavor that also received prior conditioning. In these experiments, the occurrence of second-order…

Animals recognize a taste cue as aversive when it has been associated with post-ingestive malaise; this associative learning is known as conditioned taste aversion (CTA). When an animal consumes a new taste and no negative consequences follow, it becomes recognized as a safe signal, leading to an increase in its consumption in subsequent…

Data are presented from two experiments investigating whether covert responses can be modified. Imagery was chosen as a target because of its significant role in behavior therapy techniques. Resent evidence on the facilitative effects of imagery in paired-associate learning suggested to the experimenters the use of performance on a…