EFFECT OF CONTEXT ON PERFORMANCE TO CONDITIONED-STIMULI WITH MIXED HISTORIES OF REINFORCEMENT AND NONREINFORCEMENT
EFFECT OF CONTEXT ON PERFORMANCE TO CONDITIONED-STIMULI WITH MIXED HISTORIES OF REINFORCEMENT AND NONREINFORCEMENT
复制标题
DOI：
10.1037/0097-7403.12.1.4
复制
发表时间：
1986-01-01
期刊：
影响因子：
--
通讯作者：
KING, DA
中科院分区：
文献类型：
--
作者：
BOUTON, ME;KING, DA
Five conditioned suppression experiments explored the role of the conditioning history of the conditioned stimulus (CS) in determining the effects of contextual fear on performance to the CS. Contextual fear was produced by postconditioning exposure to unconditioned stimuli alone in the context of conditioning; it was independently assessed with context-preference tests. The results of Experiments 1 and 2 suggest that when the number of reinforced and nonreinforced trials is equated across extinction, partial reinforcement, and latent inhibition procedures, only the extinction procedure produces a CS whose performance is subsequently affected (ie, augmented) by contextual fear. Increasing the number of nonreinforced trials in a partial reinforcement procedure did not affect the CS’s insensitivity to the effect of context (Experiment 3). Contextual fear’s relatively unique augmenting effect on fear of an extinguished CS was abolished by extensive, but not by less extensive, reacquisition training (Experiments 4 and 5). The results suggest that, depending on the CS’s conditioning history, contextual fear either augments or has little effect on fear of the CS. We suggest that augmentation by context should be viewed as the restoration of fear that is otherwise depressed by extinction.
