Witnauer James E, Miller Ralph R
Department of Psychology, State University of New York, Binghamton, 13902-6000, USA.
Learn Behav. 2011 May;39(2):146-62. doi: 10.3758/s13420-010-0013-3.
When two cues are reinforced together (in compound), most associative models assume that animals learn an associative network that includes direct cue-outcome associations and a within-compound association. All models of associative learning subscribe to the importance of cue-outcome associations, but most models assume that within-compound associations are irrelevant to each cue's subsequent behavioral control. In the present article, we present an extension of Van Hamme and Wasserman's (Learning and Motivation 25:127-151, 1994) model of retrospective revaluation based on learning about absent cues that are retrieved through within-compound associations. The model was compared with a model lacking retrieval through within-compound associations. Simulations showed that within-compound associations are necessary for the model to explain higher-order retrospective revaluation and the observed greater retrospective revaluation after partial reinforcement than after continuous reinforcement alone. These simulations suggest that the associability of an absent stimulus is determined by the extent to which the stimulus is activated through the within-compound association.
当两个线索同时得到强化(复合强化)时,大多数联想模型假定动物学习到一个联想网络,该网络包括直接的线索-结果联想以及复合内部联想。所有联想学习模型都认同线索-结果联想的重要性,但大多数模型假定复合内部联想与每个线索随后的行为控制无关。在本文中,我们基于对通过复合内部联想检索到的缺失线索的学习,提出了范·哈默和瓦瑟曼(《学习与动机》25:127 - 151,1994)的回顾性重评模型的一个扩展。该模型与一个缺乏通过复合内部联想进行检索的模型进行了比较。模拟结果表明,复合内部联想对于该模型解释高阶回顾性重评以及观察到的部分强化后比仅连续强化后更大的回顾性重评是必要的。这些模拟表明,缺失刺激的可联想性由该刺激通过复合内部联想被激活的程度所决定。