Some determinants of second-order conditioning.
In a Pavlovian conditioning situation, an initially neutral stimulus may be made excitatory by nonreinforced presentations in compound with an established conditioned excitor [i.e., second-order conditioning (SOC)]. The established excitor may be either a punctate cue or the training context. In four conditioned suppression experiments using rats, we investigated whether SOC phenomena parallel other cue interaction effects. In Experiment 1, we found that the response potential of a target stimulus was directly related to the intertrial interval when SOC was mediated by a punctate cue, and inversely related to the intertrial interval when SOC was mediated by the training context. Experiment 2 demonstrated that punctate- and context-mediated SOC are oppositely affected by posttraining context extinction, and Experiments 3 and 4 demonstrated that context- and punctate-mediated SOC are differentially affected by conditioned stimulus (Experiment 3) and unconditioned stimulus (Experiment 4) preexposure treatments. These findings parallel phenomena in conditioned inhibition and cue competition situations.
Department of Psychology, State University of New York at Binghamton, Binghamton, NY 13902-6000, USA.
James E
JE
Witnauer
Ralph R
RR
Miller
D000704:Analysis of Variance; D000818:Animals; D001245:Association Learning / Q000502:physiology; D003214:Conditioning, Classical / Q000502:physiology*; D003463:Cues; D005108:Extinction, Psychological / Q000502:physiology*; D005260:Female; D007266:Inhibition, Psychological; D008297:Male; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley
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