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评价性条件作用会影响随后的差异恐惧条件作用的获得,这可以通过皮肤电反应和刺激评价来衡量。

Evaluative conditioning affects the subsequent acquisition of differential fear conditioning as indexed by electrodermal responding and stimulus evaluations.

机构信息

School of Psychology, Curtin University, Perth, WA, Australia.

出版信息

Psychophysiology. 2020 Mar;57(3):e13505. doi: 10.1111/psyp.13505. Epub 2019 Nov 17.

Abstract

It is currently unclear whether the acquisition of negative stimulus valence in evaluative and fear conditioning paradigms is interrelated or independent. The present study used a transfer paradigm to address this question. Three groups of participants were trained in a picture-picture evaluative conditioning paradigm before completing acquisition of differential fear conditioning using graphical shapes as conditional stimuli (CSs). In group congruent, the shape used as CS+ (paired with the US during fear conditioning) was paired with negative pictures, whereas the shape used as CS- (presented alone during fear conditioning) was paired with positive pictures. In group incongruent, the shape used as CS+ was paired with positive pictures, whereas the shape used as CS- was paired with negative pictures. In group different, different shapes were employed in evaluative and fear conditioning. Acquisition of differential electrodermal responses emerged within fewer acquisition trials in groups congruent and different than in group incongruent. Transfer of evaluative learning across paradigms was evident only after removal of participants who failed to display evaluative conditioning. The current research indicates that stimulus valence acquired during evaluative conditioning transfers to fear conditioning and will differentially affect the acquisition of fear learning as indexed by subjective evaluations and electrodermal responses. The findings suggest that evaluative and fear conditioning are not independent.

摘要

目前尚不清楚在评价和恐惧条件作用范式中获得负刺激效价是相互关联还是独立的。本研究使用转移范式来解决这个问题。三组参与者在完成使用图形作为条件刺激(CS)的差异恐惧条件作用的获得之前,在图片-图片评价条件作用范式中接受训练。在组内一致的情况下,作为 CS+(在恐惧条件作用期间与 US 配对)的形状与负面图片配对,而作为 CS-(在恐惧条件作用期间单独呈现)的形状与正面图片配对。在组间不一致的情况下,作为 CS+的形状与正面图片配对,而作为 CS-的形状与负面图片配对。在组不同的情况下,评价和恐惧条件作用中使用了不同的形状。在组内一致和不同的情况下,与组间不一致的情况下相比,差异皮肤电反应的获得需要更少的获得试验。只有在去除未能表现出评价条件作用的参与者后,评价学习才能在范式之间转移。目前的研究表明,在评价条件作用中获得的刺激效价会转移到恐惧条件作用中,并会对主观评价和皮肤电反应所反映的恐惧学习的获得产生不同的影响。这些发现表明评价和恐惧条件作用不是独立的。

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