Authors: Hiroshi Miura and Yuji Itoh (三浦大志・伊東裕司)

Title: A motor task, not working memory, causes the revelation effect

Journal(書誌情報): Canadian Journal of Experimental Psychology



Abstract: Performing a cognitive task prior to making a recognition
judgment increases the probability of old responses, which is known as the
revelation effect. The criterion shift account (Niewiadomski & Hockley,
2001) proposes that occupation of working memory causes the revelation
effect. However, we proposed that working memory does not cause it. Two
experiments were conducted to disconfirm the relationship between working
memory and the revelation effect, and to consider an alternative explanation
that metacognition causes the effect. In Experiment 1, the revelation effect
was caused by a finger movement task, which puts little or no load on
working memory. In Experiment 2, a metacognitive instruction that a
cognitive task would make subsequent recognition easier induced a
conservative criterion shift. The finding that a simple motor task caused
the revelation effect in Experiment 1 disconfirms the relationship between
working memory and the revelation effect and extends the boundaries of the
occurrence of the effect. The findings in Experiment 2 suggest that
metacognition may be related to the occurrence of the revelation effect.
This study implies a paradoxical aspect of human cognition in that
metacognition, which usually makes cognition more effective and rational,
may also cause an irrational phenomenon, the revelation effect.

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