Three experiments with rat subjects examined the transfer of stimulus control in Pavlovian appetitive serial feature-positive discriminations of the form X→A +, A -. In those discriminations, X acquired the ability to modulate or set the occasion for conditioned responses (CRs) that were evoked by A, such that A evoked CRs only when it was preceded by X. The occasion-setting power of X was specific to A: X did not modulate CRs evoked by other excitatory conditioned stimuli (CSs) that had been trained in various manners with the same unconditioned stimulus as was used in the X→A+, A- discrimination. These data are consistent with earlier claims that, in this conditioning preparation, serial feature-positive discrimination training endows X with the ability to signal the occurrence of an upcoming relation between a specific CS and the US.
ASJC Scopus subject areas
- Health(social science)
- Neuropsychology and Physiological Psychology
- Experimental and Cognitive Psychology
- Developmental and Educational Psychology