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Two Reinforcement Contingencies that Influence Discrimination Learning in Stimulus-Fading

机译：两种强化意外导致影响歧视学习在刺激褪色

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Stimulus-fading (SF) involves the presentation of increasingly difficult sets of discriminations arrayed along some continuum, where progress from one to the next depends on mastering the current discrimination. Response accuracy is correlated with two reinforcement contingencies: (1) the trial-based presentation of a consequential stimulus (e.g., a short-duration video-clip for a correct response), and (2) the response-contingent change in discriminative stimuli (RPCIDS) produced by correct responding on the trials at a fading level. This experiment isolated the effects of both contingencies by comparing learning in SF and in yoked-control (YC) version of fading wherein video-clip reinforcers were presented independent of response accuracy, but response accuracy determined advancement across fading levels. Discriminations at all fading levels were acquired by 90% and 10% of participants in the SF and YC conditions, respectively. Although many of the YC participants did not learn all of the discriminations, they did learn some of them, which reflected the reinforcing effects of response-contingent-change in discriminative stimuli. Because this contingency occurs in all fading protocols, it could influence learning in all of them. At some fading levels in the YC condition, response accuracy was unexpectedly correlated with video-clip reinforcement: a finding that did not compromise the effect of response produced change in discriminative stimuli on discrimination learning in the YC condition. This methodological limitation might be cured by substituting a truly-random-control version of fading for the YC condition.
机译：刺激衰落（SF）涉及呈现沿着某些连续体排列的越来越困难的辨别集的呈现，其中从一个到下一个进展取决于掌握当前的歧视。响应精度与两个强化突发事件相关联：（1）基于试验的刺激（例如，用于正确响应的短持续时间视频剪辑），以及（2）判别刺激的响应变化（ RPCID）通过对褪色水平的试验进行了正确响应而产生的。该实验通过比较SF和Yoked-Control（YC）的衰落中的学习来分离出两种突发事件的影响，其中视频剪辑增强器与响应精度无关，但响应精度在衰落水平上产生的进步。所有褪色水平的歧视分别在SF和YC条件下获得90％和10％的参与者。虽然许多YC参与者没有学习所有歧视，但他们确实学会了其中一些，这反映了响应措施变化的增强效果辨别刺激。因为这种应急发生在所有衰落协议中，所以它可能会影响所有衰落协议。在YC条件下的一些衰落水平下，响应精度与视频剪辑加固意外相关：一个发现并未损害响应在YC条件下歧视学习的判别刺激变化的影响。这种方法可以通过代替YC条件的褪色真正随机控制版本来治愈。

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