An inhibitory within-compound association attenuates overshadowing. J Exp Psychol Anim Behav Process 2008 Jan;34(1):133-43
Date
02/06/2008Pubmed ID
18248120Pubmed Central ID
PMC2535765DOI
10.1037/0097-7403.34.1.133Scopus ID
2-s2.0-39049140235 (requires institutional sign-in at Scopus site) 10 CitationsAbstract
According to the comparator hypothesis (Miller & Matzel, 1988), cue competition depends on the association between a target stimulus (X) and a competing cue (e.g., an overshadowing cue [A]). Thus, it was expected that overshadowing would be reduced by establishing an inhibitory-like relationship between X and A before compound conditioning. In three lever press suppression experiments with rats, this expectation was supported. Experiment 1 showed that establishing an inhibitory X-A relationship reduced overshadowing. In Experiment 2, degrading the inhibitory-like relationship before conditioning allowed reinforced AX compound trials to result in overshadowing. Experiment 3 replicated the results of Experiment 2 when the inhibitory relationship was degraded after compound conditioning. The results support the view that within-compound associations are necessary not only for retrospective revaluation, but also for conventional cue competition.
Author List
Amundson JC, Witnauer JE, Pineño O, Miller RRAuthor
Jeffrey C. Amundson PhD Assistant Professor in the Medical School Regional Campus Central Wisconsin department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
Adaptation, PhysiologicalAnimals
Cues
Female
Male
Memory
Rats
Rats, Sprague-Dawley
