Gast Anne, Rothermund Klaus
Department of Experimental Clinical and Health Psychology, Ghent University, Belgium.
J Exp Psychol Anim Behav Process. 2011 Oct;37(4):466-76. doi: 10.1037/a0023077.
Evaluative conditioning (EC) effects are often assumed to be based on a learned mental link between the CS (conditioned stimulus) and the US (unconditioned stimulus). We demonstrate that this link is not the only one that can underlie EC effects, but that if evaluative responses are actually given during the learning phase also a direct link between the CS and an evaluative response-a CS-ER link-can be learned and lead to EC effects. In Experiment 1, CSs were paired with USs and participants were asked to evaluate the pairs during the conditioning phase. Resulting EC effects were unaffected by a later revaluation of the USs, suggesting that these EC effects can be attributed to CS-ER learning rather than to CS-US learning. Experiment 2 replicated Experiment 1 with the difference that no evaluative responses were given during the learning phase. EC effects in this study were influenced by US revaluation, suggesting that these EC effects are mainly based on CS-US learning. In Experiment 3, it was shown that EC effects can be found even if the USs are entirely removed from the procedure and the CSs are only paired with enforced evaluative responses. Together the experiments show that the valence of a stimulus can change because of a contingency with an evaluative response. (PsycINFO Database Record (c) 2011 APA, all rights reserved).
评价性条件作用(EC)效应通常被认为是基于条件刺激(CS)和无条件刺激(US)之间习得的心理联系。我们证明,这种联系并非产生EC效应的唯一基础,但如果在学习阶段确实做出了评价性反应,那么CS与评价性反应之间的直接联系——CS - ER联系——也能够被习得并导致EC效应。在实验1中,将CS与US配对,并要求参与者在条件作用阶段对这些配对进行评价。随后对US的重新评价并未影响由此产生的EC效应,这表明这些EC效应可归因于CS - ER学习而非CS - US学习。实验2重复了实验1,不同之处在于在学习阶段未要求做出评价性反应。本研究中的EC效应受到US重新评价的影响,这表明这些EC效应主要基于CS - US学习。在实验3中,结果表明即使在实验过程中完全去除US,仅将CS与强制的评价性反应配对,也能发现EC效应。这些实验共同表明,刺激的效价会因与评价性反应的偶然性而发生变化。(《心理学文摘数据库记录》(c)2011美国心理学会,保留所有权利)