Experimental Analysis of the Nature of Cognitive Defusion : Effect of Contextual Control over Transformation of Stimulus Function Established by Topographical Features of Equivalence Class Members

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  • KISHITA Naoko
    Graduate School of Psychology, Doshisha University:Japan Society for the Promotion of Sience
  • OHTSUKI Tomu
    Faculty of Human Sciences, Waseda University
  • MUTO Takashi
    Faculty of Psychology, Doshisha University

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  • 脱フュージョンの作用機序の解明に関する基礎研究 : 刺激の物理的特徴にもとづく刺激機能の変換に対する文脈制御の効果

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Abstract

The aim of this study is to investigate the effect of multiple exemplar training procedure on establishment of generalized contextual control over the transformation of stimulus function. Three 3-member stimulus equivalence classes, each consisting of three topographically distinct visual stimuli (linear, circular, triangle) were established for 12 undergraduate students using match-to-sample (MTS) task. Following the MTS training and testing, participants were provided with many trials in which behaving in accordance with transformation of function was differentially reinforced or punished depending on the presence of a class of physical features of the stimuli. Finally, new equivalence classes were then established and test for generalized contextual control were presented. The result revealed that all 9 subjects included in analyses demonstrated contextual control over derived transformation of stimulus functions, of which seven showed the generalization of contextual control. The finding will be discussed in terms of experimental analyses of the nature of cognitive defusion and how we can further the definitive test of effects of cognitive defusion at the basic experimental level.

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