Home > TPR > Vol. 52 (2002) > Iss. 2
Article Title
Overtraining, Extinction, and Shift Learning in Matching-to-Sample Discriminations in Rats
Document Type
Article
Abstract
The present experiment examined the influence of overtraining on the nonshift and reversal shift of a matching-tosample (MTS) discrimination. Rats were trained to criterion or were overtrained on the MTS discrimination. After completing Phase 1 training, they received extinction to criterion, and then were given either a nonshift (Group Nonshift) problem, in which the rule was not changed from Phase 1 but novel stimuli were used, or a reversal shift (Group Reversal) problem, in which the rule was changed from Phase 1 but the stimuli were not changed. Overtraining facil itated Phase 3 shift learning of both Group Nonshift and Group Reversal. There were no significant differences in the rate of learning in Phase 3 shift between Groups Nonshift and Reversal after criterion training and overtraining. These findings suggest that a common response to a configuration of stimuli with the same response assignment formed in Phase 1 remain effective intact after extinction.
Recommended Citation
Nakagawa, Esho
(2002)
"Overtraining, Extinction, and Shift Learning in Matching-to-Sample Discriminations in Rats,"
The Psychological Record:
Vol. 52:
Iss.
2, Article 8.
Available at:
http://opensiuc.lib.siu.edu/tpr/vol52/iss2/8