Urushihara Kouji, Miller Ralph R
Department of Psychology, State University of New York at Binghamton, Binghamton, NY 13902-6000, USA.
J Exp Psychol Anim Behav Process. 2006 Jul;32(3):253-70. doi: 10.1037/0097-7403.32.3.253.
Three conditioned lever-press suppression experiments with rats investigated the interaction between overshadowing and outcome-alone exposure effects. Experiment 1 found in first-order conditioning that combined overshadowing and outcome-preexposure treatments attenuate the response deficit produced by either treatment alone. Experiments 2 and 3 investigated the interaction between overshadowing and outcome pre- and postexposure effects in sensory preconditioning, varying retention intervals to engage recency and primacy effects with respect to treatment order. Contrary to when a solitary cue is conditioned, responding to a cue conditioned in compound appeared positively correlated with the context's associative status. These findings suggested that some of the basic laws of learning applicable to cues conditioned alone do not similarly apply to a component of a compound cue.
三项针对大鼠的条件性杠杆按压抑制实验研究了遮蔽效应与仅结果暴露效应之间的相互作用。实验1发现在一阶条件作用中,联合遮蔽和结果预暴露处理会减弱单独一种处理所产生的反应缺陷。实验2和实验3研究了在感觉预条件作用中遮蔽与结果预暴露和后暴露效应之间的相互作用,改变了保持间隔以涉及关于处理顺序的近因效应和首因效应。与对单独一个线索进行条件作用时的情况相反,对复合条件下的线索做出的反应与情境的联想状态呈正相关。这些发现表明,一些适用于单独条件化线索的基本学习规律并不同样适用于复合线索的一个成分。