StudInfoBehavSci_14_59.pdf 602 KB
The effects of prior positive reinforcement contingency on shuttle-box avoidance learning in rats.
Four groups of rats were exposed to response-reinforcement contingent, yoked reinforcement, or yoked stimulus reinforcement schedules in a Skinner box or to no experimental pretreatment. All groups were subsequently tested for transfer of the learned helplessness effect on a shuttle-box active avoidance task. The yoked stimulus reinforcement group showed some retardation of avoidance learning in comparison with the other three groups. Subjects were previously implanted electrodes into their brain fields and were measured averaged visual evoked potentials (VEP) during test sessions. The amplitude of VEP at the septal area showed gradual increase with their test task performances except the yoked stimulus reinforcement group. These results suggest that the experience of prior contingency disturbs their following learning.
広島大学総合科学部紀要. III, 情報行動科学研究
Copyright (c) 1990 by Faculty of Integrated Arts and Sciences, Hiroshima University. All rights reserved.